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Criteria:   found in Siskiyou County  •   is native  •  group by lifeform
3506  records include photos for these plants # number of sources
Scientific Name Common Name Lifeform #
  Lifeform: Annual680 plants
Achyrachaena mollis Blow wives Annual herb 2
Acmispon americanus American bird's foot trefoil Annual herb 2
Acmispon americanus var. americanus Spanish lotus Annual herb 1
Acmispon brachycarpus Short podded lotus Annual herb  
Acmispon denticulatus Toothed lotus Annual herb  
Acmispon micranthus Small flowered lotus Annual herb 2
Acmispon parviflorus Hill lotus Annual herb  
Acmispon wrangelianus Chilean trefoil Annual herb  
Agoseris heterophylla Mountain dandelion Annual herb  
Agoseris heterophylla var. heterophylla Annual agoseris Annual herb  
Aliciella leptomeria Sand aliciella Annual herb  
Allophyllum divaricatum Purple false gilia Annual herb  
Allophyllum gilioides Dense false gilia Annual herb  
Allophyllum gilioides ssp. violaceum Dense false gilia Annual herb  
Alopecurus saccatus Foxtail Annual grass  
Amaranthus blitoides Prostrate pigweed Annual herb  
Amaranthus californicus California amaranth Annual herb  
Amaranthus powellii Powell's amaranth Annual herb  
Amsinckia intermedia Common fiddleneck Annual herb  
Amsinckia lycopsoides Tarweed fiddleneck Annual herb  
Amsinckia menziesii Fiddleneck Annual herb 1
Amsinckia menziesii var. intermedia Orange flowered menzies' fiddleneck Annual herb  
Amsinckia menziesii var. menziesii Small flowered fiddleneck Annual herb 1
Amsinckia retrorsa Rigid fiddleneck Annual herb  
Amsinckia tessellata Devil's lettuce Annual herb 4
Amsinckia tessellata var. gloriosa Large flowered devil's fiddleneck Annual herb 1
Amsinckia tessellata var. tessellata Devil's lettuce Annual herb 1
Ancistrocarphus filagineus Woolly fishhooks Annual herb  
Androsace elongata California rockjasmine Annual herb  
Androsace elongata ssp. acuta California androsace Annual herb  
Androsace filiformis Slender stemmed androsace Annual herb  
Androsace occidentalis Western rockjasmine Annual herb  
Antirrhinum cornutum Spurred snapdragon Annual herb  
Antirrhinum vexillo-calyculatum Brewer's snapdragon Annual herb  
Antirrhinum vexillo-calyculatum ssp. breweri Brewer's sail flower snapdragon Annual herb  
Antirrhinum vexillocalyculatum Wiry snapdragon Annual herb  
Antirrhinum vexillocalyculatum ssp. breweri Wiry snapdragon Annual herb  
Aphyllon corymbosum Flat topped broom rape Annual herb  
Aphyllon epigalium Annual herb  
Aphyllon purpureum Naked broom rape Annual herb  
Aristida oligantha Oldfield three awn Annual grass  
Aster frondosus Short rayed alkali aster Annual herb  
Astragalus gambelianus Loco weed Annual herb  
Astragalus lentiginosus Freckled milk vetch Annual, Perennial herb  
Astragalus lentiginosus var. chartaceus Broadleaf milkvetch Annual, Perennial herb  
Astragalus lentiginosus var. lentiginosus Freckled milk vetch Annual, Perennial herb  
Astragalus lentiginosus var. platyphyllidius Volcanic milk vetch Annual, Perennial herb  
Astragalus lentiginosus var. salinus Sagebrush milk vetch Annual, Perennial herb  
Athysanus pusillus Dwarf athysanus Annual herb  
Atriplex patula Spear oracle Annual herb 3
Atriplex pusilla Small scale Annual herb  
Atriplex truncata Wedgescale Annual herb  
Beckmannia syzigachne American sloughgrass Annual grass 5
Bidens frondosa Sticktight Annual herb  
Blepharipappus scaber Blepharipappus Annual herb  
Bromus orcuttianus Orcutt's brome grass Annual grass 1
Bromus vulgaris Common brome Annual grass 1
Calandrinia ciliata Redmaids Annual herb 6
Calandrinia menziesii Calandrinia Annual herb 6
Callitriche heterophylla var. bolanderi Bolander's water starwort Annual herb  
Callitriche heterophylla var. heterophylla Varied leaved water starwort Annual herb  
Callitriche palustris Vernal water-starwort Annual herb  
Callitriche verna Water starwort Annual herb  
Calycadenia fremontii Fremont's calycadenia Annual herb  
Calycadenia micrantha Small flowered calycadenia Annual herb  
Calycadenia truncata Rosin weed Annual herb  
Calycadenia truncata ssp. microcephala Oregon western rosinweed Annual herb  
Calyptridium umbellatum Pussy toes Annual, Perennial herb 3
Camissonia contorta Contorted sun cup Annual herb  
Camissonia graciliflora Hill sun cup Annual herb  
Cardamine oligosperma Idaho bittercress Annual, Perennial herb  
Castilleja attenuata Narrow leaved owl's clover Annual herb  
Castilleja campestris Yellow owl's clover Annual herb  
Castilleja campestris ssp. campestris Yellow owl's clover Annual herb  
Castilleja densiflora Dense flower owl's clover Annual herb  
Castilleja exserta Owl's clover Annual herb 10
Castilleja exserta ssp. exserta Purple owl's clover Annual herb 5
Castilleja lacera Foothill owl's clover Annual herb  
Castilleja minor Little paintbrush Annual herb 1
Castilleja minor ssp. minor Lesser paintbrush Annual herb 2
Castilleja tenuis Hairy owl's clover Annual herb  
Centaurium muehlenbergii Monterey centaury Annual herb 2
Centaurium venustum Beautiful centaury Annual herb  
Centromadia fitchii Spikeweed Annual herb  
Centromadia pungens Common tarweed Annual herb 1
Centromadia pungens ssp. maritima Common tarweed Annual herb  
Centromadia pungens ssp. pungens Common tarweed Annual herb  
Centromadia pungens ssp. septentrionalis Common tarweed Annual herb  
Chaenactis carphoclinia Pebble pincushion Annual herb  
Chaenactis douglasii Chaenactis Annual, Perennial herb  
Chaenactis douglasii var. douglasii Dusty pincushions Annual, Perennial herb  
Chamaesyce glyptosperma Rib seed spurge Annual herb  
Chamaesyce ocellata Contura creek spurge Annual herb  
Chamaesyce ocellata ssp. ocellata Contura creek sandmat Annual herb  
Chamaesyce serpyllifolia Thyme leafed spurge Annual herb  
Chamaesyce serpyllifolia ssp. serpyllifolia Thyme leafed spurge Annual herb  
Chamomilla suaveolens Common pineapple weed Annual herb  
Chenopodium atrovirens Dark green goosefoot Annual herb  
Chenopodium berlandieri Pit seed goosefoot Annual herb  
Chenopodium desiccatum Dry goosefoot Annual herb  
Chenopodium fremontii Fremont's goosefoot Annual herb  
Chenopodium incognitum Masked goosefoot Annual herb  
Chenopodium leptophyllum Thin leaved goosefoot Annual herb  
Chenopodium pratericola Meadow goosefoot Annual herb  
Chenopodium rubrum Red goosefoot Annual herb  
Chenopodium rubrum var. rubrum Red goosefoot Annual herb  
Chenopodium simplex Large seeded goosefoot Annual herb  
Chorizanthe membranacea Pink spineflower Annual herb 1
Clarkia amoena Farewell to spring Annual herb 16
Clarkia amoena ssp. huntiana Farewell to spring Annual herb  
Clarkia borealis Northern clarkia Annual herb  
Clarkia borealis ssp. borealis Northern clarkia Annual herb  
Clarkia concinna Red ribbons Annual herb 4
Clarkia concinna ssp. concinna Red ribbons Annual herb  
Clarkia gracilis Graceful clarkia Annual herb 3
Clarkia gracilis ssp. gracilis Graceful clarkia Annual herb  
Clarkia heterandra California gaura Annual herb  
Clarkia lassenensis Lassen clarkia Annual herb  
Clarkia modesta Waltham creek clarkia Annual herb  
Clarkia purpurea Purple clarkia Annual herb 9
Clarkia purpurea ssp. quadrivulnera Purple clarkia Annual herb 4
Clarkia purpurea ssp. viminea Large godetia Annual herb  
Clarkia rhomboidea Tongue clarkia Annual herb 1
Clarkia stellata Lake almanor clarkia Annual herb  
Claytonia exigua Little spring beauty Annual herb  
Claytonia exigua ssp. exigua Viridis Annual herb  
Claytonia parviflora Narrow leaved miner's lettuce Annual herb 2
Claytonia parviflora ssp. parviflora Miner'slettuce Annual herb 1
Claytonia parviflora ssp. utahensis Streambank springbeauty Annual herb 1
Claytonia perfoliata Miner's lettuce Annual herb 5
Claytonia perfoliata ssp. intermontana Miner's lettuce Annual herb  
Claytonia perfoliata ssp. perfoliata Claytonia Annual herb  
Claytonia rubra Red stemmed spring beauty Annual herb  
Claytonia rubra ssp. depressa Red stemmed spring beauty Annual herb  
Claytonia rubra ssp. rubra Red stemmed miner's lettuce Annual herb  
Claytonia saxosa Brandegee's spring beauty Annual herb  
Cleome platycarpa Golden bee plant Annual herb  
Collinsia grandiflora Large flowered collinsia Annual herb 1
Collinsia greenei Greene's collinsia Annual herb  
Collinsia linearis Narrow leaf collinsia Annual herb  
Collinsia parviflora Few flowered blue eyed mary Annual herb  
Collinsia rattanii Rattan's collinsia Annual herb 1
Collinsia sparsiflora Few flowered collinsia Annual herb  
Collinsia sparsiflora var. collina Hillside collinsia Annual herb  
Collinsia torreyi Torrey's collinsia Annual herb  
Collinsia torreyi var. latifolia Broad leaved collinsia Annual herb  
Collinsia torreyi var. torreyi Torrey's collinsia Annual herb  
Collinsia torreyi var. wrightii Wright's collinsia Annual herb  
Collomia diversifolia Serpentine collomia Annual herb  
Collomia grandiflora Large flowered collomia Annual herb 3
Collomia heterophylla Varied leaved collomia Annual herb  
Collomia linearis Narrow leaved collomia Annual herb  
Collomia tinctoria Yellow staining collomia Annual herb  
Collomia tracyi Tracy's collomia Annual herb  
Conyza canadensis Canada horseweed Annual herb  
Conyza canadensis var. canadensis Canadian horseweed Annual herb  
Cordylanthus pilosus Hairy bird's beak Annual herb  
Cordylanthus pilosus ssp. pilosus Hairy bird's beak Annual herb  
Cordylanthus ramosus Bushy bird's beak Annual herb  
Cordylanthus tenuis Slender bird's beak Annual herb  
Cordylanthus tenuis ssp. brunneus Serpentine bird's beak Annual herb (hemiparasitic)  
Cordylanthus tenuis ssp. pallescens Pallid bird's beak Annual herb (hemiparasitic)  
Cordylanthus tenuis ssp. tenuis Slender bird's beak Annual herb  
Cordylanthus tenuis ssp. viscidus Viscid bird's beak Annual herb  
Crocidium multicaule Spring gold Annual herb  
Croton setiger Turkey-mullein Annual herb 4
Croton setigerus Dove weed Annual herb 1
Cryptantha affinis Common cryptantha Annual herb  
Cryptantha ambigua Wilkes' cryptantha Annual herb  
Cryptantha circumscissa Western forget me not Annual herb  
Cryptantha clevelandii var. dissita Serpentine cryptantha Annual herb  
Cryptantha dissita Serpentine cryptantha Annual herb  
Cryptantha flaccida Beaked cryptantha Annual herb  
Cryptantha incana Tulare cryptantha Annual herb  
Cryptantha intermedia Common cryptanth Annual herb  
Cryptantha intermedia var. hendersonii Henderson's cryptantha Annual herb  
Cryptantha intermedia var. intermedia Common cryptantha Annual herb  
Cryptantha milobakeri Milo baker's cryptantha Annual herb  
Cryptantha muricata Prickly cryptantha Annual herb 2
Cryptantha muricata var. jonesii Jones' cryptantha Annual herb 2
Cryptantha rostellata Beaked cryptantha Annual herb  
Cryptantha simulans Pine cryptantha Annual herb  
Cryptantha subretusa Crater lake cryptantha Annual herb  
Cryptantha torreyana Torrey's cryptantha Annual herb  
Cryptantha torreyana var. torreyana Torrey's cryptantha Annual herb  
Cryptantha watsonii Watson's cryptantha Annual herb  
Cuscuta californica California dodder Annual herb, Vine (parasitic)  
Cuscuta californica var. breviflora California dodder Annual herb, Vine (parasitic)  
Cuscuta campestris Field dodder Annual herb, Vine (parasitic)  
Cuscuta cephalanthi Buttonbush dodder Annual herb, Vine (parasitic)  
Cuscuta jepsonii Jepson's dodder Annual herb, Vine  
Cuscuta occidentalis California dodder Annual herb, Vine (parasitic)  
Cuscuta suksdorfii Mountain dodder Annual herb, Vine (parasitic)  
Cuscuta suksdorfii var. subpedicellata Mountain dodder Annual herb, Vine (parasitic)  
Cyperus acuminatus Short pointed cyperus Annual grass  
Cyperus bipartitus Slender flatsedge Annual grass  
Cyperus erythrorhizos Red rooted cyperus Annual grass 2
Cyperus odoratus Fragrant flatsedge Annual grass  
Cyperus squarrosus Awned cyperus Annual grass  
Daucus pusillus Wild carrot Annual herb 1
Deschampsia danthonioides Annual hairgrass Annual grass  
Descurainia incisa Mountain tansy mustard Annual herb  
Descurainia incisa ssp. filipes Erect fruited mountain tansy mustard Annual herb  
Descurainia longipedicellata Annual herb  
Descurainia pinnata Yellow tansy mustard Annual herb  
Descurainia pinnata ssp. brachycarpa Western tansymustard Annual herb  
Descurainia pinnata ssp. halictorum Alkali western tansy mustard Annual herb  
Descurainia pinnata ssp. intermedia Intermediate western tansy mustard Annual herb  
Dimeresia howellii Doublet Annual herb  
Diplacus douglasii Purple mouse ears Annual herb 1
Diplacus jepsonii Jepson's monkeyflower Annual herb  
Diplacus kelloggii Kellogg's monkeyflower Annual herb  
Diplacus layneae Layne's monkeyflower Annual herb  
Diplacus mephiticus Skunky monkeyflower Annual herb  
Diplacus nanus Dwarf monkey flower Annual herb  
Diplacus pygmaeus Egg Lake monkeyflower Annual herb  
Diplacus torreyi Torrey's monkeyflower Annual herb  
Diplacus tricolor Tricolor monkeyflower Annual herb  
Downingia bacigalupii Bach's downingia Annual herb  
Downingia bicornuta Bristled downingia Annual herb  
Downingia concolor Spotted throat downingia Annual herb  
Downingia concolor var. concolor Spotted throat downingia Annual herb  
Downingia cuspidata Toothed downingia Annual herb  
Downingia elegans Elegant downingia Annual herb  
Downingia elegans var. corymbosa Elegant downingia Annual herb  
Downingia elegans var. elegans Elegant calicoflower Annual herb  
Downingia insignis Harlequin downingia Annual herb  
Downingia montana Sierra downingia Annual herb  
Downingia pulcherrima Calicoflower Annual herb  
Downingia yina Cascade downingia Annual herb  
Draba albertina Alberta whitlow grass Annual, Perennial herb  
Draba stenoloba var. ramosa Alaska draba Annual, Perennial herb  
Echinochloa muricata var. microstachya Rough barnyardgrass Annual grass  
Elatine californica California waterwort Annual, Perennial herb  
Elatine chilensis Chilean waterwort Annual, Perennial herb (aquatic)  
Elatine gracilis Sierra waterwort Annual, Perennial herb (aquatic)  
Elatine rubella Southwestern waterwort Annual herb  
Eleocharis decumbens Decumbent spikerush Annual grass  
Eleocharis engelmannii Engelmann's spikerush Annual grass  
Eleocharis engelmannii var. detonsa Engelmann's spikerush Annual grass  
Eleocharis obtusa Broad spiked spikerush Annual grass 3
Eleocharis obtusa var. engelmannii Engelmann's spikerush Annual grass  
Epilobium brachycarpum Willow herb Annual herb 1
Epilobium campestre Smooth boisduvalia Annual herb  
Epilobium densiflorum Willow herb Annual herb  
Epilobium foliosum California willowherb Annual herb  
Epilobium minutum Minute willowherb Annual herb  
Epilobium pallidum Pale boisduvalia Annual herb  
Epilobium paniculatum var. jucundum Autumn willowherb Annual herb 1
Epilobium pygmaeum Smooth boisduvalia Annual herb  
Eragrostis hypnoides Teal lovegrass Annual grass  
Eragrostis mexicana Mexican lovegrass Annual grass  
Eragrostis mexicana ssp. virescens Orcutt's eragrostis Annual grass  
Eragrostis pectinacea Tufted lovegrass Annual grass  
Eragrostis pectinacea var. miserrima Desert lovegrass Annual grass  
Eragrostis pectinacea var. pectinacea Tufted lovegrass Annual grass  
Eremocarpus setigerus Turkey mullein Annual herb 4
Eriastrum signatum Maroon-spotted Woollystar Annual herb  
Eriastrum sparsiflorum Great basin eriastrum Annual herb  
Eriastrum wilcoxii Wilcox's eriastrum Annual herb  
Erigeron canadensis Canada horseweed Annual herb  
Eriogonum baileyi Bailey buckwheat Annual herb  
Eriogonum baileyi var. baileyi Bailey's buckwheat Annual herb  
Eriogonum hirtiflorum Hairy flowered buckwheat Annual herb  
Eriogonum luteolum Wicker buckwheat Annual herb  
Eriogonum luteolum var. luteolum Golden buckwheat Annual herb  
Eriogonum maculatum Angle stermed buckwheat Annual herb  
Eriogonum nudum var. pubiflorum Hairy flowered buckwheat Annual herb  
Eriogonum roseum Wand buckwheat Annual herb 3
Eriogonum spergulinum Wild buckwheat Annual herb  
Eriogonum spergulinum var. reddingianum Spurry buckwheat Annual herb  
Eriogonum vimineum Wicker stemmed eriogonum Annual herb 2
Erythranthe alsinoides Chickweed monkeyflower Annual herb  
Erythranthe arvensis Annual herb  
Erythranthe bicolor Yellow and white monkeyflower Annual herb  
Erythranthe breviflora Short flowered monkeyflower Annual herb  
Erythranthe breweri Brewer's monkeyflower Annual herb  
Erythranthe floribunda Many flowered monkey flower Annual herb 1
Erythranthe guttata Yellow monkey flower Annual, Perennial herb (rhizomatous) 37
Erythranthe inflatula ephemeral monkeyflower Annual herb  
Erythranthe microphylla Small leaved monkeyflower Annual herb  
Erythranthe pulsiferae Candelabrum monkey flower Annual herb  
Erythranthe rubella Red stemmed himulus Annual herb  
Erythranthe suksdorfii Suksdorf's monkeyflower Annual herb  
Erythranthe taylorii Shasta limestone monkeyflower Annual herb  
Erythranthe trinitiensis Pink-margined monkeyflower Annual herb  
Eschscholzia californica California poppy Annual, Perennial herb 50
Euphorbia crenulata Chinesecaps Annual, Perennial herb  
Euphorbia glyptosperma Ridge-seeded spurge Annual herb  
Euphorbia ocellata Contura creek spurge Annual herb  
Euphorbia ocellata ssp. ocellata Valley spurge Annual, Perennial herb  
Euphorbia serpillifolia Thyme-leafed spurge Annual herb  
Euphorbia serpillifolia ssp. serpillifolia Thyme leafed spurge Annual, Perennial herb  
Euphorbia spathulata Reticulate seeded spurge Annual herb  
Festuca microstachys Small fescue Annual grass  
Floerkea proserpinacoides False mermaid Annual herb  
Galium aparine Cleavers Annual herb  
Galium bifolium Low mountain bedstraw Annual herb  
Galium tricornutum Rough bedstraw Annual herb  
Galium triflorum Sweet bedstraw Annual herb  
Gayophytum diffusum Spreading groundsmoke Annual herb  
Gayophytum diffusum ssp. parviflorum Small flowered groundsmoke Annual herb  
Gayophytum heterozygum Zig zag gayophytum Annual herb  
Gayophytum humile Dwarf groundsmoke Annual herb  
Gayophytum racemosum Black foot gayophytum Annual herb  
Gayophytum ramosissimum Pinyon gayophytum Annual herb  
Gentianella amarella Autumn dwarf gentian Annual herb  
Gentianella amarella ssp. acuta Autumn dwarf gentian Annual herb  
Gentianopsis simplex Hiker's fringed gentian Annual herb  
Geranium bicknellii Bicknell's geranium Annual herb  
Geranium carolinianum Carolina geranium Annual herb  
Gilia brecciarum Small gilia Annual herb  
Gilia brecciarum ssp. brecciarum Nevada gilia Annual herb  
Gilia capillaris Smooth leaved gilia Annual herb  
Gilia capitata Blue field gilia Annual herb 17
Gilia capitata ssp. capitata Blue field gilia Annual herb 2
Gilia leptalea Bridges' gilia Annual herb  
Gilia leptalea ssp. leptalea Bridges gilia Annual herb  
Gilia leptomeria Tooth leaved gilia Annual herb  
Gilia sinistra Clockwise gilia Annual herb  
Gilia sinistra ssp. sinistra Clockwise gilia Annual herb  
Gilia sinuata Cinder gilia Annual herb  
Gilia tenuiflora Slender flowered gilia Annual herb  
Githopsis specularioides Venus' looking glass Annual herb  
Gnaphalium palustre Lowland cudweed Annual herb  
Gnaphalium stramineum Cotton batting Annual, Perennial herb 3
Gratiola ebracteata Common hedge hyssop Annual herb  
Gratiola heterosepala Boggs lake hedge hyssop Annual herb  
Gratiola neglecta Clammy hedge hyssop Annual herb  
Gymnosteris parvula Small flowered gymnosteris Annual herb  
Helianthus annuus Hairy leaved sunflower Annual herb 16
Helianthus bolanderi Bolander's sunflower Annual, Perennial herb 3
Helianthus exilis Serpentine sunflower Annual herb 3
Hemizonella minima Opposite leaved tarweed Annual herb  
Hemizonia congesta Hayfield tarweed Annual herb 5
Hemizonia congesta ssp. clevelandii Cleveland's tarweed Annual herb  
Hemizonia fitchii Spikeweed Annual herb  
Hemizonia pungens Common spikeweed Annual herb 1
Hemizonia pungens ssp. maritima Maritime spikeweed Annual herb  
Hemizonia pungens ssp. pungens Common tarweed Annual herb  
Hemizonia pungens ssp. septentrionalis Northern spikeweed Annual herb  
Hesperocnide tenella Western stinging nettle Annual herb  
Hesperolinon micranthum Small flower western flax Annual herb  
Heterocodon rariflorum Heterocodon Annual herb  
Hordeum depressum Alkali barley Annual grass 3
Hypericum anagalloides Creeping St. John's wort Annual, Perennial herb 1
Idahoa scapigera Oldstem idahoa Annual herb  
Juncus bufonius Common toad rush Annual grass 6
Juncus bufonius var. bufonius Toad rush Annual grass  
Juncus hemiendytus Dwarf rush Annual grass  
Juncus hemiendytus var. hemiendytus Vernal pool rush Annual grass  
Juncus kelloggii Kellogg's dwarf rush Annual grass  
Juncus leiospermus Dwarf rush Annual grass  
Juncus leiospermus var. leiospermus Red bluff dwarf rush Annual grass  
Juncus tiehmii Tiehm's rush Annual grass  
Lagophylla ramosissima Common hareleaf Annual herb  
Lagophylla ramosissima ssp. ramosissima Common hareleaf Annual herb  
Landoltia punctata Dotted duckmeat Annual, Perennial herb  
Lappula redowskii Stickweed Annual herb  
Lasthenia californica Goldfields Annual herb 12
Lasthenia californica ssp. californica California goldfields Annual herb 2
Layia glandulosa White layia Annual herb 5
Lepidium densiflorum Common pepper grass Annual herb  
Lepidium densiflorum var. densiflorum Common pepper grass Annual herb  
Lepidium densiflorum var. macrocarpum Bigseed pepper grass Annual herb  
Lepidium oblongum Veiny pepper grass Annual herb  
Lepidium ruderale Roadside pepperweed Annual herb  
Lepidium virginicum Wild pepper grass Annual herb  
Lepidium virginicum ssp. menziesii Robinson's pepper grass Annual herb  
Lepidium virginicum var. pubescens Wild pepper grass Annual herb  
Leptochloa fascicularis Sprangletop Annual grass  
Leptochloa fusca Sprangletop Annual grass  
Leptochloa fusca ssp. fascicularis Bearded sprangletop Annual grass  
Leptosiphon androsaceus False babystars Annual herb 1
Leptosiphon bicolor True babystars Annual herb  
Leptosiphon bolanderi Bolander's linanthus Annual herb  
Leptosiphon ciliatus Whiskerbrush Annual herb 1
Leptosiphon ciliatus ssp. ciliatus Whiskerbrush Annual herb  
Leptosiphon filipes Thread linanthus Annual herb  
Leptosiphon harknessii Harkness' flaxflower Annual herb  
Leptosiphon rattanii Rattan's leptosiphon Annual herb  
Leptosiphon septentrionalis Northern linanthus Annual herb  
Lessingia nemaclada Thread stem lessingia Annual herb  
Lessingia ramulosa Sonoma lessingia Annual herb  
Limnanthes alba White meadowfoam Annual herb 1
Limnanthes floccosa Woolly meadowfoam Annual herb  
Limnanthes floccosa ssp. bellingeriana Bellinger's meadowfoam Annual herb  
Limnanthes floccosa ssp. floccosa Woolly meadowfoam Annual herb  
Limosella aquatica Northern mudwort Annual herb (aquatic)  
Linanthus androsaceus Common linanthus Annual herb 1
Linanthus bicolor True baby stars Annual herb  
Linanthus bolanderi Bolander's linanthus Annual herb  
Linanthus ciliatus Whisker brush linanthus Annual herb 1
Linanthus filipes Filiform linanthus Annual herb  
Linanthus harknessii Harkness linanthus Annual herb  
Linanthus rattanii Rattan's linanthus Annual herb  
Linanthus septentrionalis Northern linanthus Annual herb  
Lindernia dubia False pimpernel Annual herb  
Lindernia dubia var. dubia False pimpernel Annual herb  
Lotus denticulatus Toothed lotus Annual herb  
Lotus hamatus Small flowered lotus Annual herb 2
Lotus humistratus Short podded lotus Annual herb  
Lotus micranthus Hill lotus Annual herb  
Lotus purshianus Bird's foot trefoil Annual herb 6
Lotus purshianus var. purshianus Spanish lotus Annual herb 1
Lotus unifoliolatus American bird's foot trefoil Annual herb 1
Lotus unifoliolatus var. unifoliolatus American bird's foot trefoil Annual herb  
Lotus wrangelianus Chilean trefoil Annual herb  
Lupinus bicolor Lupine Annual, Perennial herb 15
Lupinus luteolus Butter lupine Annual herb 1
Lupinus microcarpus Chick lupine Annual herb 8
Lupinus microcarpus var. densiflorus Chick lupine Annual herb 12
Lupinus microcarpus var. microcarpus Chick lupine Annual herb 3
Lupinus nanus Valley sky lupine Annual herb 11
Madia citrigracilis Shasta tarweed Annual herb  
Madia citriodora Lemon scented tarweed Annual herb  
Madia elegans Common madia Annual herb 13
Madia elegans ssp. densifolia Leafy common madia Annual herb 11
Madia elegans ssp. elegans Common madia Annual herb 2
Madia exigua Small tarweed Annual herb  
Madia glomerata Mountain tarweed Annual herb  
Madia gracilis Gumweed Annual herb 1
Madia minima Little tarweed Annual herb  
Madia sativa Coastal tarweed Annual herb  
Malacothrix clevelandii Cleveland's malacothrix Annual herb  
Malacothrix floccifera Woolly malacothrix Annual herb 1
Malacothrix sonchoides Sow thistle malacothrix Annual herb 1
Matricaria discoidea Pineapple weed Annual herb 3
Mentzelia albicaulis White stemmed blazing star Annual herb 2
Mentzelia congesta Clustered blazing star Annual herb  
Mentzelia dispersa Scattered blazing star Annual herb  
Mentzelia micrantha Small flowered stickleaf Annual herb 2
Mentzelia montana Mountain blazing star Annual herb  
Micranthes bryophora Bud saxifrage Annual herb  
Micropus californicus Q tips Annual herb 1
Micropus californicus var. californicus Slender cottonweed Annual herb  
Microsteris gracilis Slender phlox Annual herb  
Microsteris gracilis var. gracilis Slender phlox Annual herb  
Microsteris gracilis var. humilior Slender phlox Annual herb  
Mimetanthe pilosa Snouted monkey flower Annual herb  
Mimulus alsinoides Chickweed monkeyflower Annual herb  
Mimulus bicolor Yellow and white monkeyflower Annual herb  
Mimulus brachiatus Serpentine monkeyflower Annual herb  
Mimulus breviflorus Short flowered monkeyflower Annual herb  
Mimulus breweri Brewer's monkeyflower Annual herb  
Mimulus douglasii Purple mouse ears Annual herb 1
Mimulus evanescens Disappearing monkeyflower Annual herb  
Mimulus floribundus Many flowered monkey flower Annual herb 1
Mimulus guttatus Yellow monkey flower Annual, Perennial herb (rhizomatous) 36
Mimulus jepsonii Jepson's monkeyflower Annual herb  
Mimulus kelloggii Kellogg's monkeyflower Annual herb  
Mimulus layneae Layne's monkeyflower Annual herb  
Mimulus mephiticus Skunky monkeyflower Annual herb  
Mimulus microphyllus Small leaved monkeyflower Annual herb 34
Mimulus nanus Dwarf monkey flower Annual herb  
Mimulus nanus var. jepsonii Jepson's monkeyflower Annual herb  
Mimulus nanus var. mephiticus Skunky monkeyflower Annual herb  
Mimulus nanus var. nanus Dwarf monkey flower Annual herb  
Mimulus parishii Parish mimulus Annual herb 34
Mimulus pilosus Snouted monkey flower Annual herb  
Mimulus pulsiferae Candelabrum monkey flower Annual herb  
Mimulus pygmaeus Egg lake monkeyflower Annual herb  
Mimulus rubellus Red stemmed himulus Annual herb  
Mimulus suksdorfii Suksdorf's monkeyflower Annual herb  
Mimulus torreyi Torrey's monkeyflower Annual herb  
Mimulus tricolor Tricolor monkeyflower Annual herb  
Minuartia douglasii Douglas' sandwort Annual herb  
Minuartia pusilla Annual sandwort Annual herb  
Monolepis nuttalliana Nuttall's poverty weed Annual herb  
Montia dichotoma Dwarf miner's lettuce Annual herb  
Montia diffusa Diffuse miner's lettuce Annual herb  
Montia fontana Water montia Annual herb  
Montia linearis Narrow leaved water chickweed Annual herb  
Muhlenbergia filiformis Slender muhly Annual, Perennial grass  
Muhlenbergia minutissima Annual muhly Annual grass  
Myosurus apetalus Mouse tail Annual herb  
Myosurus apetalus var. montanus Bristly mousetail Annual herb  
Myosurus minimus Little mouse tail Annual herb  
Myosurus sessilis Tiny mouse tail Annual herb  
Najas flexilis Slender water nymph Annual herb  
Nama densa Leafy Nama Annual herb  
Nama densa var. densa Leafy Nama Annual herb  
Nama densa var. parviflora Leafy Nama Annual herb  
Nama densum Purple mat Annual herb  
Nama densum var. densum Purple mat Annual herb  
Nama densum var. parviflorum Few flowered purple mat Annual herb  
Navarretia aeroides Annual herb  
Navarretia capillaris Miniature gilia Annual herb  
Navarretia divaricata Mountain navarretia Annual herb  
Navarretia heterandra Tehama navarretia Annual herb  
Navarretia intertexta Interwoven navarretia Annual herb  
Navarretia intertexta ssp. intertexta Interwoven navarretia Annual herb  
Navarretia intertexta ssp. propinqua Great basin navarretia Annual herb  
Navarretia leptalea Bridges' pincushionplant Annual herb  
Navarretia leptalea ssp. leptalea Bridges' gilia Annual herb  
Navarretia leucocephala White headed navarretia Annual herb  
Navarretia leucocephala ssp. bakeri Baker's navarretia Annual herb  
Navarretia leucocephala ssp. leucocephala White headed navarretia Annual herb  
Navarretia leucocephala ssp. minima Little white navarretia Annual herb  
Navarretia linearifolia Navarretia Annual herb  
Navarretia linearifolia ssp. linearifolia Navarretia Annual herb  
Navarretia paradoxiclara Navarretia Annual herb  
Navarretia paradoxinota Navarretia Annual herb  
Navarretia propinqua Annual herb  
Navarretia prostrata Prostrate navarretia Annual herb  
Navarretia pubescens Purple navarretia Annual herb  
Navarretia sinistra Alva day's pincushionplant Annual herb  
Navarretia sinistra ssp. sinistra Alva day's gilia Annual herb  
Navarretia tagetina Marigold navarretia Annual herb  
Nemophila heterophylla Canyon nemophila Annual herb  
Nemophila menziesii Baby blue eyes Annual herb 17
Nemophila parviflora Small flowered nemophila Annual herb  
Nemophila parviflora var. austiniae Rebecca austin's nemophila Annual herb  
Nemophila parviflora var. parviflora Small flowered nemophila Annual herb  
Nemophila pedunculata Meadow nemophila Annual herb  
Nemophila spatulata Sierra nemophila Annual herb  
Nicotiana attenuata Coyote tobacco Annual herb  
Nicotiana bigelovii var. wallacei Indian tobacco Annual herb  
Nicotiana quadrivalvis Indian tobacco Annual herb 2
Orcuttia tenuis Slender orcutt grass Annual grass  
Orobanche corymbosa Flat topped broom rape Annual herb  
Orthocarpus bracteosus Bracted owl's clover Annual herb  
Orthocarpus cuspidatus Broad scaled owl's clover Annual herb 1
Orthocarpus cuspidatus ssp. copelandii Copeland's owl's clover Annual herb  
Orthocarpus cuspidatus ssp. cuspidatus Siskiyou mtns. orthocarpus Annual herb  
Orthocarpus imbricatus Imbricate owl's clover Annual herb  
Orthocarpus pachystachyus Shasta orthocarpus Annual herb  
Panicum capillare Old witch grass Annual grass 2
Panicum oligosanthes Heller's rosette grass Annual grass  
Panicum oligosanthes var. scribnerianum Scribner's rosette grass Annual grass  
Pectocarya penicillata Winged pectocarya Annual herb  
Pectocarya pusilla Little pectocarya Annual herb  
Peritoma platycarpa Golden bee plant Annual herb  
Persicaria lapathifolia Common knotweed Annual herb  
Phacelia bicolor Twocolor phacelia Annual herb  
Phacelia cookei Cooke's phacelia Annual herb  
Phacelia glandulifera Sticky phacelia Annual herb  
Phacelia greenei Scott valley phacelia Annual herb  
Phacelia humilis Low phacelia Annual herb  
Phacelia inundata Playa phacelia Annual herb  
Phacelia leonis Siskiyou phacelia Annual herb  
Phacelia linearis Thread leaf phacelia Annual herb  
Phacelia pringlei Pringle's phacelia Annual herb  
Phacelia rattanii Rattan's phacelia Annual herb  
Phacelia thermalis Heat phacelia Annual herb  
Phalaris angusta Timothy canarygrass Annual grass  
Phlox gracilis Annual phlox Annual herb  
Pholistoma auritum Fiesta flower Annual herb  
Plagiobothrys bracteatus Bracted allocarya Annual herb  
Plagiobothrys canescens Valley popcorn Annual herb  
Plagiobothrys cognatus Popcorn flower Annual herb  
Plagiobothrys cusickii Cusick's popcorn flower Annual herb  
Plagiobothrys greenei Greene's allocarya Annual herb  
Plagiobothrys hispidulus Harsh allocarya Annual herb  
Plagiobothrys hispidus Cascade popcorn flower Annual herb  
Plagiobothrys infectivus Dye popcorn flower Annual herb  
Plagiobothrys kingii Great basin popcorn flower Annual herb  
Plagiobothrys kingii var. harknessii Harkness' great basin popcorn flower Annual herb  
Plagiobothrys nothofulvus Rusty haired popcorn flower Annual herb  
Plagiobothrys reticulatus Reticulate popcorn flower Annual herb  
Plagiobothrys scouleri Scouler's popcornflower Annual herb  
Plagiobothrys scouleri var. cusickii Cusick's popcornflower Annual herb  
Plagiobothrys scouleri var. hispidulus Sleeping popcornflower Annual herb  
Plagiobothrys shastensis Shasta popcorn flower Annual herb  
Plagiobothrys stipitatus Vernal pool allocarya Annual herb  
Plagiobothrys stipitatus var. micranthus Common vernal pool allocarya Annual herb  
Plagiobothrys tenellus Slender popcorn flower Annual herb  
Plagiobothrys tener Slender allocarya Annual herb  
Plagiobothrys tener var. tener Slender popcornflower Annual herb  
Platystemon californicus Cream cups Annual herb 2
Plectritis brachystemon Short spurred plectritis Annual herb  
Plectritis ciliosa Long spurred plectritis Annual herb  
Plectritis congesta Sea blush Annual herb 1
Plectritis congesta ssp. brachystemon Shortspur seablush Annual herb  
Plectritis macrocera Plectritis Annual herb  
Poa bolanderi Bolander's bluegrass Annual grass  
Poa howellii Howell's blue grass Annual grass  
Pogogyne floribunda Profuse flowered pogogyne Annual herb  
Pogogyne serpylloides Thyme leaf mesa mint Annual herb  
Pogogyne zizyphoroides Sacramento mint Annual herb  
Polemonium micranthum Annual sky pilot Annual herb  
Polygonum austiniae Rebecca austin's knotweed Annual herb  
Polygonum californicum California knotweed Annual herb  
Polygonum douglasii Douglas' knotweed Annual herb  
Polygonum douglasii ssp. austiniae Rebecca austin's knotweed Annual herb  
Polygonum douglasii ssp. douglasii Douglas' knotweed Annual herb  
Polygonum douglasii ssp. johnstonii Knotweed Annual herb  
Polygonum douglasii ssp. majus Large douglas' knotweed Annual herb  
Polygonum douglasii ssp. spergulariiforme Spurry knotweed Annual herb  
Polygonum lapathifolium Common knotweed Annual herb  
Polygonum majus Large douglas' knotweed Annual herb  
Polygonum minimum Little mountain knotweed Annual herb  
Polygonum polygaloides Milkwort knotweed Annual herb  
Polygonum polygaloides ssp. confertiflorum Dense knotweed Annual herb  
Polygonum polygaloides ssp. esotericum Modoc county knotweed Annual herb  
Polygonum polygaloides ssp. kelloggii Kellogg's knotweed Annual herb  
Polygonum sawatchense Knotweed Annual herb  
Polygonum sawatchense ssp. oblivium Knotweed Annual, Perennial herb  
Polygonum sawatchense ssp. sawatchense Knotweed Annual, Perennial herb  
Polygonum spergulariiforme Spurry knotweed Annual herb  
Porterella carnosula Porterella Annual herb  
Potentilla rivalis Brook cinquefoil Annual, Perennial herb  
Poteridium annuum Western burnet Annual, Perennial herb  
Pseudobahia peirsonii San joaquin adobe sunburst Annual herb  
Psilocarphus brevissimus Woolly marbles Annual herb  
Psilocarphus brevissimus var. brevissimus Woolly heads Annual herb  
Psilocarphus oregonus Woolly marbles Annual herb  
Psilocarphus tenellus Slender woolly heads Annual herb  
Ranunculus hebecarpus Pubescent fruited buttercup Annual herb  
Ranunculus uncinatus Hooked fruit buttercup Annual, Perennial herb  
Ranunculus uncinatus var. parviflorus Small flowered hooked fruit buttercup Annual, Perennial herb  
Ranunculus uncinatus var. uncinatus Woodland buttercup Annual, Perennial herb  
Rigiopappus leptocladus Wire weed Annual herb  
Rorippa curvipes var. truncata Blunt yellow cress Annual herb  
Rorippa curvisiliqua Curvepod yellow cress Annual, Perennial herb  
Rorippa palustris ssp. palustris Bog yellowcress Annual, Perennial herb  
Rorippa palustris var. occidentalis Western bog yellow cress Annual, Perennial herb  
Rotala ramosior Lowland rotala Annual herb  
Rumex fueginus Golden dock Annual, Perennial herb  
Rumex maritimus Golden dock Annual, Perennial herb  
Rumex persicarioides Golden dock Annual, Perennial herb  
Sagina decumbens Trailing pearlwort Annual herb  
Sagina decumbens ssp. occidentalis Western pearlwort Annual herb  
Saxifraga bryophora Bud saxifrage Annual herb  
Sclerolinon digynum Digynum flax Annual herb  
Scribneria bolanderi Scribneria Annual grass  
Sedum radiatum Coast range stonecrop Annual herb  
Silene antirrhina Sleepy catch fly Annual herb  
Silene californica California indian pink Annual herb 2
Solanum americanum White nightshade Annual, Perennial herb 1
Spirodela punctata Dotted duckmeat Annual, Perennial herb  
Stellaria nitens Shining chickweed Annual herb  
Stephanomeria paniculata Stiff branched stephanomeria Annual herb  
Stephanomeria virgata Twiggy wreath plant Annual herb 1
Stephanomeria virgata ssp. pleurocarpa Tall stephanomeria Annual herb  
Streptanthus polygaloides Milkwort jewelflower Annual herb  
Streptanthus tortuosus Jewelweed Annual, Perennial herb  
Streptanthus tortuosus var. orbiculatus Mountain jewelflower Annual, Perennial herb  
Streptanthus tortuosus var. tortuosus Mountain jewelflower Annual, Perennial herb  
Suaeda calceoliformis Horned sea blite Annual herb 1
Suaeda occidentalis Western horned sea blite Annual herb 1
Swertia perennis Star green gentian Annual herb  
Symphyotrichum frondosum Short rayed alkali aster Annual herb  
Symphyotrichum hendersonii Henderson's aster Annual herb  
Symphyotrichum subspicatum Douglas aster Annual herb 9
Tetrapteron graciliflorum Hill sun cup Annual herb  
Thysanocarpus curvipes Common fringe pod Annual herb 2
Thysanocarpus curvipes ssp. curvipes Fringe Pod Annual herb  
Thysanocarpus radians Showy fringe pod Annual herb 1
Tonella tenella Small flowered tonella Annual herb  
Trichostema lanceolatum Vinegarweed Annual herb 2
Trichostema oblongum Mountain bluecurls Annual herb  
Trichostema simulatum Siskiyou bluecurls Annual herb  
Trifolium albopurpureum Indian clover Annual herb 2
Trifolium albopurpureum var. dichotomum Clover Annual herb  
Trifolium cyathiferum Cup clover Annual herb  
Trifolium dichotomum Branched indian clover Annual herb  
Trifolium gracilentum Pin point clover Annual herb 5
Trifolium microcephalum Small head clover Annual herb 4
Trifolium obtusiflorum Creek clover Annual herb 4
Trifolium variegatum Variegated clover Annual herb 1
Trifolium variegatum var. major Large variegated clover Annual herb 1
Trifolium variegatum var. variegatum Variegated clover Annual herb  
Trifolium willdenovii Tomcat clover Annual herb 7
Triodanis perfoliata Clasping venus looking glass Annual herb 1
Uropappus lindleyi Silver puffs Annual herb 1
Utricularia minor Lesser bladderwort Annual herb  
Verbena bracteata Bracted verbena Annual, Perennial herb  
Veronica peregrina Neckweed Annual herb  
Veronica peregrina ssp. xalapensis Speedwell Annual herb  
Vulpia microstachys Fescue Annual grass 6
Vulpia microstachys var. ciliata Eastwood fescue Annual grass  
Vulpia microstachys var. confusa Tracy's fescue Annual grass  
Vulpia microstachys var. microstachys Small fescue Annual grass  
Vulpia microstachys var. pauciflora Few flowered fescue Annual grass  
Xanthium strumarium Cocklebur Annual herb  
Yabea microcarpa Hedge parsley Annual herb  
Zeltnera davyi Davy's centaury Annual herb 1
Zeltnera muehlenbergii Muehlenberg's centaury Annual herb 2
Zeltnera venusta Charming centaury Annual herb  
  Lifeform: Biennial2 plants
Descurainia incisa ssp. incisa Mountain tansy mustard Biennial herb  
Erigeron divergens Diffuse daisy Biennial, Perennial herb 4
  Lifeform: Perennial2288 plants
Achillea millefolium Yarrow Perennial herb 70
Achlys californica California deer foot Perennial herb  
Achlys triphylla Vanilla leaf Perennial herb 8
Achlys triphylla ssp. triphylla Deer foot Perennial herb 8
Achnatherum hymenoides Indian rice grass Perennial grass 8
Achnatherum latiglume Sierra needlegrass Perennial grass  
Achnatherum lemmonii Lemmon's stipa Perennial grass 1
Achnatherum lemmonii ssp. lemmonii Lemmon's needlegrass Perennial grass  
Achnatherum nelsonii Columbia needlegrass Perennial grass 1
Achnatherum nelsonii ssp. dorei Mountain needlegrass Perennial grass 1
Achnatherum nevadense Sierra needlegrass Perennial grass  
Achnatherum occidentale Western needlegrass Perennial grass 1
Achnatherum occidentale ssp. californicum California needlegrass Perennial grass  
Achnatherum occidentale ssp. occidentale Western needlegrass Perennial grass  
Achnatherum occidentale ssp. pubescens Elmer's needlegrass Perennial grass  
Achnatherum thurberianum Thurber stipa Perennial grass  
Acmispon nevadensis Sierra lotus Perennial herb  
Acmispon nevadensis var. nevadensis Sierra nevada lotus Perennial herb  
Aconitum columbianum Monkshood Perennial herb 4
Aconitum columbianum ssp. columbianum Columbian monkshood Perennial herb  
Aconitum columbianum ssp. viviparum Columbian monkshood Perennial herb  
Aconitum columbianum var. howellii Howell's monkshood Perennial herb  
Aconogonon davisiae Davis knotweed Perennial herb  
Aconogonon newberryi Newberry's smartweed Perennial herb  
Aconogonon phytolaccifolium Pokeweed knotweed Perennial herb  
Actaea rubra Baneberry Perennial herb 8
Adenocaulon bicolor Trail plant Perennial herb  
Agastache parvifolia Small leaved horsemint Perennial herb  
Agastache urticifolia Horse mint Perennial herb 6
Ageratina occidentalis Western eupatorium Perennial herb 4
Ageratina shastensis Shasta ageratina Perennial herb  
Agoseris Xdasycarpa Perennial herb  
Agoseris aurantiaca Orange flowered agoseris Perennial herb 1
Agoseris aurantiaca var. aurantiaca Orange agoseris Perennial herb  
Agoseris glauca Short beaked agoseris Perennial herb  
Agoseris glauca var. glauca Short beaked agoseris Perennial herb  
Agoseris glauca var. laciniata False dandelion Perennial herb  
Agoseris glauca var. monticola Mountain agoseris Perennial herb  
Agoseris grandiflora Giant mountain dandelion Perennial herb 3
Agoseris grandiflora var. grandiflora Giant mountain dandelion Perennial herb  
Agoseris grandiflora var. leptophylla Giant mountain dandelion Perennial herb 3
Agoseris monticola Mountain agoseris Perennial herb  
Agoseris parviflora False dandelion Perennial herb  
Agoseris retrorsa Spear leaved agoseris Perennial herb 1
Agrostis exarata Bentgrass Perennial grass 5
Agrostis exarata var. monolepis Spike bentgrass Perennial grass 5
Agrostis hallii Hall's bent grass Perennial grass 2
Agrostis humilis Mountain bent grass Perennial grass  
Agrostis idahoensis Colonial bentgrass Perennial grass 3
Agrostis oregonensis Oregon bentgrass Perennial grass  
Agrostis pallens Diego bent grass Perennial grass 14
Agrostis scabra Rough bentgrass Perennial grass 4
Agrostis thurberiana Thurber's bentgrass Perennial grass  
Agrostis variabilis Mountain bentgrass Perennial grass  
Alisma gramineum Grass leaf water plantain Perennial herb  
Alisma plantago-aquatica Water plantain Perennial herb (aquatic) 5
Alisma triviale Northern water plantain Perennial herb (aquatic) 5
Allium acuminatum Taper tipped onion Perennial herb (bulb) 7
Allium amplectens Narrow leaved onion Perennial herb (bulb) 3
Allium bolanderi Bolander's onion Perennial herb (bulb)  
Allium bolanderi var. bolanderi Bolander's onion Perennial herb (bulb)  
Allium bolanderi var. mirabile Bolander's onion Perennial herb (bulb)  
Allium campanulatum Dusky onion Perennial herb (bulb) 2
Allium falcifolium Sickle leaf onion Perennial herb (bulb) 4
Allium lemmonii Lemmon's onion Perennial herb (bulb) 1
Allium membranaceum Papery onion Perennial herb (bulb)  
Allium obtusum Red sierra onion Perennial herb (bulb) 3
Allium obtusum var. obtusum Red sierra onion Perennial herb (bulb)  
Allium parvum Dwarf onion Perennial herb (bulb) 1
Allium peninsulare Mexicali onion Perennial herb (bulb)  
Allium peninsulare var. peninsulare Mexicali onion Perennial herb (bulb)  
Allium siskiyouense Siskiyou onion Perennial herb (bulb)  
Allium validum Swamp onion Perennial herb (bulb) 5
Allotropa virgata Sugarstick Perennial herb (mycoparasitic)  
Alopecurus aequalis Sonoma alopecurus Perennial grass  
Alopecurus aequalis var. aequalis Shortawn foxtail Perennial grass  
Alopecurus geniculatus Marsh foxtail Perennial grass  
Ambrosia psilostachya Ragweed Perennial herb 6
Amphiscirpus nevadensis Great basin bulrush Perennial grass  
Anaphalis margaritacea Pearly everlasting Perennial herb 18
Anemone deltoidea Windflower Perennial herb 3
Anemone drummondii Drummond's anemone Perennial herb 2
Anemone drummondii var. drummondii Drummond's anemone Perennial herb 2
Anemone grayi Blue windflower Perennial herb  
Anemone lyallii Little mountain thimbleweed Perennial herb  
Anemone multifida Pacific anemone Perennial herb 7
Anemone multifida var. multifida Pacific anemone Perennial herb 1
Anemone occidentalis Western anemone Perennial herb 3
Anemone oregana Western wood anenome Perennial herb  
Anemone oregana var. oregana Blue windflower Perennial herb  
Anemopsis californica Yerba mansa Perennial herb 32
Angelica arguta Lyall's angelica Perennial herb  
Angelica breweri Brewer's angelica Perennial herb 2
Angelica californica California angelica Perennial herb  
Angelica capitellata Grayswamp whiteheads Perennial herb 2
Angelica genuflexa Kneeling angelica Perennial herb 2
Angelica tomentosa Woolly angelica Perennial herb 1
Anisocarpus madioides Woodland madia Perennial herb 1
Anisocarpus scabridus Scabrid alpine tarplant Perennial herb  
Antennaria argentea Silvery everlasting Perennial herb  
Antennaria corymbosa Meadowpussytoes Perennial herb  
Antennaria dimorpha Gray cushion pussytoes Perennial herb  
Antennaria geyeri Geyer's pussytoes Perennial herb  
Antennaria howellii Howell's pussytoes Perennial herb  
Antennaria howellii ssp. howellii Howell's pussytoes Perennial herb  
Antennaria luzuloides Silvery brown pussytoes Perennial herb  
Antennaria media Alpine pussytoes Perennial herb 1
Antennaria microphylla Littleleaf pussytoes Perennial herb 5
Antennaria racemosa Racemose pussytoes Perennial herb  
Antennaria rosea Rosy everlasting Perennial herb 2
Antennaria rosea ssp. confinis Rosy pussytoes Perennial herb  
Antennaria rosea ssp. rosea Rosy pussytoes Perennial herb  
Antennaria suffrutescens Evergreen pussytoes Perennial herb  
Anthoxanthum nitens Vanilla grass Perennial grass (rhizomatous) 9
Anthoxanthum nitens ssp. nitens Vanilla grass Perennial grass (rhizomatous) 9
Aphyllon californicum California orobanche Perennial herb (parasitic)  
Aphyllon californicum ssp. grayanum Gray's california broom rape Perennial herb (parasitic)  
Aphyllon fasciculatum Clustered broomrape Perennial herb (parasitic)  
Aphyllon pinorum Pinewoods broom rape Perennial herb (parasitic)  
Aphyllon tuberosum Chaparral broomrape Perennial herb (parasitic)  
Apocynum androsaemifolium Spreading dogbane Perennial herb 1
Apocynum cannabinum Indian hemp Perennial herb 11
Aquilegia formosa Columbine Perennial herb 54
Arabis Xdivaricarpa Hybrid drummond's rock cress Perennial herb  
Arabis aculeolata Waldo rock cress Perennial herb 1
Arabis breweri Brewer's rock cress Perennial herb 1
Arabis breweri var. austiniae Rebecca austin's rock cress Perennial herb  
Arabis breweri var. breweri Brewer's rock cress Perennial herb  
Arabis drummondii Drummond's rock cress Perennial herb  
Arabis eschscholtziana Eschscholtz's hairy rockcress Perennial herb  
Arabis glabra Smooth rock cress Perennial herb  
Arabis glabra var. furcatipilis Smooth rock cress Perennial herb  
Arabis glabra var. glabra Smooth rock cress Perennial herb  
Arabis hirsuta Hairy rock cress Perennial herb 1
Arabis hirsuta var. glabrata Mountain rock cress Perennial herb  
Arabis hirsuta var. pycnocarpa Hairy fruit rock cress Perennial herb  
Arabis holboellii Holboell's rock cress Perennial herb  
Arabis holboellii var. pendulocarpa Weeping fruited holboell's rock cress Perennial herb  
Arabis holboellii var. pinetorum Pine rockcress Perennial herb  
Arabis holboellii var. retrofracta Backward splitting holboell's rock cress Perennial herb  
Arabis koehleri Koehler's rockcress Perennial herb  
Arabis koehleri var. stipitata Koehler's stipitate rock cress Perennial herb  
Arabis lemmonii Lemmon's rock cress Perennial herb  
Arabis lemmonii var. lemmonii Lemmon's rock cress Perennial herb  
Arabis lyallii Lyall's rock cress Perennial herb 1
Arabis lyallii var. lyallii Lyall's rockcress Perennial herb  
Arabis lyallii var. nubigena Lyall's cloud cress Perennial herb  
Arabis macdonaldiana Mcdonald's rock cress Perennial herb  
Arabis mcdonaldiana Mcdonald's rock cress Perennial herb  
Arabis microphylla Littleleaf rockcress Perennial herb  
Arabis microphylla var. microphylla Small leaved rock cress Perennial herb  
Arabis modesta Modest rock cress Perennial herb  
Arabis oregana Oregon rock cress Perennial herb  
Arabis platysperma Broad seeded rock cress Perennial herb  
Arabis platysperma var. howellii Howell's rockcress Perennial herb  
Arabis platysperma var. platysperma Broad seeded rock cress Perennial herb  
Arabis puberula Blue mountain rock cress Perennial herb  
Arabis pycnocarpa Creamflower rockcress Perennial herb 1
Arabis pycnocarpa var. pycnocarpa Hairy fruit rock cress Perennial herb  
Arabis rectissima Bristlyleaf rockcress Perennial herb  
Arabis rectissima var. rectissima Bristly leaved rock cress Perennial herb  
Arabis repanda Repand rock cress Perennial herb  
Arabis repanda var. greenei Greene's rock cress Perennial herb  
Arabis repanda var. repanda Repand rock cress Perennial herb  
Arabis rigidissima Rigid rock cress Perennial herb  
Arabis rigidissima var. demota Carson range rock cress Perennial herb  
Arabis rigidissima var. rigidissima Trinity mtns. rock cress Perennial herb  
Arabis rollei Siskiyou rock cress Perennial herb  
Arabis serpentinicola Preston peak rock cress Perennial herb  
Arabis sparsiflora Sicklepod rock cress Perennial herb 2
Arabis sparsiflora var. sparsiflora Elegant rock cress Perennial herb 2
Arabis sparsiflora var. subvillosa Hairy stemmed elegant rock cress Perennial herb  
Arabis subpinnatifida Klamath rockcress Perennial herb  
Arabis suffrutescens Woody rock cress Perennial herb  
Arabis suffrutescens var. suffrutescens Woody rockcress Perennial herb  
Aralia californica California spikenard Perennial herb 18
Arceuthobium abietinum Fir dwarf mistletoe Perennial herb (parasitic)  
Arceuthobium americanum American dwarf mistletoe Perennial herb (parasitic)  
Arceuthobium californicum Sugar pine dwarf mistletoe Perennial herb (parasitic)  
Arceuthobium campylopodum Pine dwarf mistletoe Perennial herb (parasitic)  
Arceuthobium cyanocarpum Blue berry dwarf mistletoe Perennial herb (parasitic)  
Arceuthobium divaricatum Western dwarf mistletoe Perennial herb (parasitic)  
Arceuthobium douglasii Douglas's dwarf mistletoe Perennial herb (parasitic)  
Arceuthobium littorum Seashore dwarf mistletoe Perennial herb (parasitic)  
Arceuthobium monticola Mountain dwarf mistletoe Perennial herb (parasitic)  
Arceuthobium occidentale Digger pine dwarf mistletoe Perennial herb (parasitic)  
Arceuthobium siskiyouense Siskiyou dwarf mistletoe Perennial herb (parasitic)  
Arceuthobium tsugense Hemlock dwarf mistletoe Perennial herb (parasitic)  
Arceuthobium tsugense ssp. mertensianae Mountain hemlock dwarf mistletoe Perennial herb (parasitic)  
Arceuthobium tsugense ssp. tsugense Hemlock dwarf mistletoe Perennial herb (parasitic)  
Arenaria aculeata Prickly sandwort Perennial herb  
Arenaria congesta Capitate sandwort Perennial herb 1
Arenaria congesta var. congesta Capitate sandwort Perennial herb  
Arenaria congesta var. crassula Rough sandwort Perennial herb  
Arenaria congesta var. subcongesta Capitate sandwort Perennial herb  
Arenaria congesta var. suffrutescens Suffrutescent sandwort Perennial herb  
Arenaria kingii ssp. compacta King's sandwort Perennial herb  
Arenaria kingii var. glabrescens King's smooth sandwort Perennial herb  
Arenaria pumicola var. californica Pumice sandwort Perennial herb  
Arnica Xdiversifolia Rayless arnica Perennial herb  
Arnica amplexicaulis Streambank arnica Perennial herb 3
Arnica cernua Serpentine arnica Perennial herb (rhizomatous)  
Arnica chamissonis Chamisso arnica Perennial herb 6
Arnica cordifolia Heart leaved arnica Perennial herb 1
Arnica cordifolia var. cordifolia Heart leaved arnica Perennial herb  
Arnica cordifolia var. pumila Dwarf heart leaved arnica Perennial herb 1
Arnica dealbata Mock leopardbane Perennial herb  
Arnica discoidea Rayless arnica Perennial herb  
Arnica diversifolia Lawless arnica Perennial herb  
Arnica lanceolata Clasping arnica Perennial herb  
Arnica lanceolata ssp. prima Clasping arnica Perennial herb 3
Arnica latifolia Mountain arnica Perennial herb  
Arnica longifolia Seep spring arnica Perennial herb  
Arnica mollis Cordilleran arnica Perennial herb 1
Arnica nevadensis Sierra arnica Perennial herb 1
Arnica ovata Sticky leaf arnica Perennial herb  
Arnica parryi Nodding arnica Perennial herb  
Arnica sororia Twin arnica Perennial herb (rhizomatous)  
Arnica spathulata Klamath arnica Perennial herb (rhizomatous)  
Arnica tomentella Recondite arnica Perennial herb 1
Arnica venosa Veiny arnica Perennial herb (rhizomatous)  
Arnica viscosa Mt. shasta arnica Perennial herb (rhizomatous)  
Artemisia borealis Boreal sage Perennial herb  
Artemisia borealis ssp. borealis Boreal sage Perennial herb  
Artemisia campestris Field sagewort Perennial herb  
Artemisia campestris ssp. borealis Northern sagewort Perennial herb  
Artemisia douglasiana California mugwort Perennial herb 35
Artemisia dracunculus Tarragon Perennial herb 11
Artemisia ludoviciana Silver wormwood Perennial herb 17
Artemisia ludoviciana ssp. incompta Western mugwort Perennial herb  
Artemisia ludoviciana ssp. ludoviciana Silver wormwood Perennial herb 3
Artemisia michauxiana Lemon sagewort Perennial herb 2
Artemisia norvegica Alpine sagewort Perennial herb 1
Artemisia norvegica ssp. saxatilis Boreal sagewort Perennial herb  
Aruncus dioicus Bride's feathers Perennial herb 11
Aruncus dioicus var. acuminatus Bride's feathers Perennial herb 1
Aruncus dioicus var. pubescens Goats beard Perennial herb  
Asarum caudatum Creeping wild ginger Perennial herb 41
Asarum hartwegii Hartweg's wild ginger Perennial herb 4
Asarum marmoratum Marbled wild ginger Perennial herb (rhizomatous)  
Asclepias cordifolia Purple milkweed Perennial herb 8
Asclepias fascicularis narrow leaf milkweed Perennial herb 32
Asclepias speciosa Showy milkweed Perennial herb 40
Aster alpigenus var. andersonii Alpine aster Perennial herb 1
Aster ascendens Long leaved aster Perennial herb  
Aster breweri Brewer's aster Perennial herb  
Aster brickellioides Rayless leafy aster Perennial herb  
Aster campestris Western meadow aster Perennial herb  
Aster eatonii Eaton's aster Perennial herb 2
Aster engelmannii Engelmann's aster Perennial herb 2
Aster foliaceus Leafy aster Perennial herb 1
Aster foliaceus var. lyallii Lyall's leafy aster Perennial herb  
Aster foliaceus var. parryi Parry's aster Perennial herb 1
Aster integrifolius Entire leaved aster Perennial herb  
Aster ledophyllus Cascade aster Perennial herb  
Aster occidentalis Western mountain aster Perennial herb 1
Aster occidentalis var. occidentalis Western mountain aster Perennial herb  
Aster occidentalis var. yosemitanus Western bog aster Perennial herb  
Aster oregonensis Oregon aster Perennial herb  
Aster radulinus Rough leaved aster Perennial herb 3
Astragalus accidens Rogue river milkvetch Perennial herb  
Astragalus accidens var. hendersonii Henderson's milk vetch Perennial herb  
Astragalus californicus Klamath milk vetch Perennial herb  
Astragalus canadensis Canadian milkvetch Perennial herb 1
Astragalus canadensis var. brevidens Short toothed milk vetch Perennial herb  
Astragalus curvicarpus Curvepod milkvetch Perennial herb  
Astragalus curvicarpus var. curvicarpus Curved pod milk vetch Perennial herb  
Astragalus filipes Narrow pod locoweed Perennial herb  
Astragalus gibbsii Gibbs locoweed Perennial herb  
Astragalus inversus Susanville milk vetch Perennial herb  
Astragalus obscurus Basalt milk vetch Perennial herb  
Astragalus pulsiferae Pulsifer's milk vetch Perennial herb  
Astragalus purshii Pursh's sheeppod Perennial herb 3
Astragalus purshii var. lagopinus Pursh's milk vetch Perennial herb  
Astragalus purshii var. lectulus Pursh's milk vetch Perennial herb  
Astragalus purshii var. purshii Pursh's milk vetch Perennial herb  
Astragalus purshii var. tinctus Pursh's milk vetch Perennial herb 1
Astragalus tephrodes var. brachylobus Ashen milk vetch Perennial herb  
Astragalus umbraticus Santa barbara milk vetch Perennial herb  
Astragalus whitneyi Whitney's milk vetch Perennial herb 1
Astragalus whitneyi var. confusus Whitney's milk vetch Perennial herb 1
Astragalus whitneyi var. siskiyouensis Siskiyou milk vetch Perennial herb  
Asyneuma prenanthoides California harebell Perennial herb 2
Balsamorhiza Xterebinthacea Perennial herb  
Balsamorhiza deltoidea Deltoid balsam root Perennial herb 2
Balsamorhiza hookeri Hooker's balsam root Perennial herb 1
Balsamorhiza hookeri var. lanata Woolly balsamroot Perennial herb  
Balsamorhiza lanata Woolly balsamroot Perennial herb  
Balsamorhiza macrolepis var. platylepis Flat scale balsam root Perennial herb 1
Balsamorhiza sagittata Arrow leaved balsamroot Perennial herb 6
Balsamorhiza sericea Silky balsamroot Perennial herb  
Barbarea orthoceras Winter cress Perennial herb 1
Berula erecta Cut leaved water parsnip Perennial herb 1
Bidens cernua Nodding beggartick Perennial herb  
Bistorta bistortoides American bistort Perennial herb  
Boechera acutina Pointed rockcress Perennial herb  
Boechera breweri Brewer's rock cress Perennial herb 1
Boechera breweri ssp. breweri Brewer's rockcress Perennial herb  
Boechera breweri ssp. shastaensis Shasta rockcress Perennial herb  
Boechera divaricarpa Spreadingpod rockcress Perennial herb  
Boechera elkoensis Elko rockcress Perennial herb  
Boechera howellii Howell's rockcress Perennial herb  
Boechera koehleri Koehler's rockcress Perennial herb  
Boechera lemmonii Lemmon's rockcress Perennial herb  
Boechera lyallii Lyall's rockcress Perennial herb 1
Boechera microphylla Small-leaved rock cress Perennial herb  
Boechera microphylla var. microphylla Small-leaved rock cress Perennial herb  
Boechera pauciflora Hairy stem rockcress Perennial herb  
Boechera paupercula Small-flowered rockcress Perennial herb  
Boechera pendulocarpa Dropseed rockcress Perennial herb  
Boechera pinetorum Woodland rockcress Perennial herb  
Boechera platysperma Pioneer rockcress Perennial herb  
Boechera puberula Silver rockcress Perennial herb  
Boechera rectissima Bristly leaf rockcress Perennial herb  
Boechera repanda Yosemite rockcress Perennial herb  
Boechera retrofracta Reflexed rockcress Perennial herb  
Boechera rigidissima Trinity mountain rockcress Perennial herb  
Boechera rollei Rolle's rockcress Perennial herb  
Boechera serpenticola Serpentine rockcress Perennial herb  
Boechera sparsiflora Sicklepod rockcress Perennial herb 2
Boechera stricta Drummond's rockcress Perennial herb  
Boechera subpinnatifida Klamath rockcress Perennial herb  
Boechera suffrutescens Woody rockcress Perennial herb  
Bolboschoenus maritimus Alkali bulrush Perennial grass 15
Bolboschoenus maritimus ssp. paludosus Saltmarsh bulrush Perennial grass 15
Bolboschoenus robustus Sturdy bullrush Perennial grass 10
Boschniakia strobilacea Ground cone Perennial herb (parasitic)  
Boykinia major Large boykinia Perennial herb 5
Boykinia occidentalis Western boykinia Perennial herb 6
Brasenia schreberi Watershield Perennial herb (aquatic)  
Brickellia californica California brickellia Perennial herb 15
Brickellia grandiflora Large flowered brickelbush Perennial herb  
Brickellia greenei Greene's brickelbush Perennial herb  
Brodiaea coronaria Harvest brodiaea Perennial herb (bulb) 3
Brodiaea coronaria ssp. coronaria Harvest brodiaea Perennial herb (bulb) 3
Brodiaea elegans Harvest brodiaea Perennial herb 6
Brodiaea elegans ssp. elegans Harvest brodiaea Perennial herb 1
Bromus carinatus California bromegrass Perennial grass 20
Bromus carinatus var. carinatus California brome Perennial grass 20
Bromus carinatus var. marginatus Mountain brome Perennial grass 6
Bromus ciliatus Fringed bromegrass Perennial grass 2
Bromus laevipes Narrow flowered brome Perennial grass 3
Bromus marginatus Mountain brome Perennial grass 6
Bromus polyanthus Great basin brome, colorado brome Perennial grass  
Bromus pseudolaevipes Southern chinook brome Perennial grass  
Bromus sitchensis var. carinatus California brome Perennial grass 20
Bromus sitchensis var. marginatus Mountain brome Perennial grass 6
Bromus suksdorfii Suksdorf's bromegrass Perennial grass 1
Cacaliopsis nardosmia Cut leaf cacaliopsis Perennial herb  
Calamagrostis breweri Short hair reedgrass Perennial grass 1
Calamagrostis canadensis Canada reedgrass Perennial grass 5
Calamagrostis canadensis var. canadensis Bluejoint Perennial grass  
Calamagrostis canadensis var. langsdorfii Canada reedgrass Perennial grass  
Calamagrostis foliosa Leafy reed grass Perennial grass 20
Calamagrostis koelerioides Fire reedgrass Perennial grass  
Calamagrostis nutkaensis Reedgrass Perennial grass 22
Calamagrostis purpurascens Purple reedgrass Perennial grass  
Calamagrostis rubescens Pinegrass Perennial grass 1
Calamagrostis stricta Narrow hairgrass Perennial grass (rhizomatous) 2
Calamagrostis stricta ssp. inexpansa Thurber's reed grass Perennial grass (rhizomatous) 1
Calamagrostis stricta ssp. stricta Slimstem reedgrass Perennial grass (rhizomatous)  
Calliscirpus criniger Cotton grass Perennial grass  
Callitriche fassettii Fassett's water starwort Perennial herb  
Callitriche hermaphroditica Northern water starwort Perennial herb  
Callitriche heterophylla Water starwort Perennial herb  
Calochortus coeruleus Blue star tulip Perennial herb 1
Calochortus elegans Elegant star tulip Perennial herb  
Calochortus elegans var. oreophilus Elegant mariposa lily Perennial herb  
Calochortus greenei Greene's mariposa lily Perennial herb (bulb) 1
Calochortus longebarbatus Longbeard mariposa lily Perennial herb (bulb) 1
Calochortus longebarbatus var. longebarbatus Long haired star tulip Perennial herb (bulb)  
Calochortus macrocarpus Sagebrush mariposa lily Perennial herb  
Calochortus monanthus Single flowered mariposa lily Perennial herb (bulb)  
Calochortus nudus Naked mariposa lily Perennial herb 1
Calochortus persistens Siskiyou mariposa lily Perennial herb (bulb)  
Calochortus tolmiei Hairy star tulip Perennial herb 5
Calochortus uniflorus Large flowered star tulip Perennial herb 4
Caltha leptosepala White marsh marigold Perennial herb 3
Caltha leptosepala ssp. howellii Howell's marsh marigold Perennial herb 3
Caltha leptosepala var. biflora Marsh marigold Perennial herb 3
Calypso bulbosa Fairy slipper Perennial herb 1
Calypso bulbosa var. occidentalis Fairy slipper Perennial herb  
Calyptridium monospermum One seeded pussypaws Perennial herb  
Calystegia malacophylla Morning glory Perennial herb  
Calystegia malacophylla ssp. malacophylla Sierra morning glory Perennial herb  
Calystegia occidentalis Bush morning glory Perennial herb 2
Calystegia occidentalis ssp. occidentalis Modoc morning glory Perennial herb  
Camassia leichtlinii Large camas Perennial herb 11
Camassia leichtlinii ssp. suksdorfii Suksdorf's large camas Perennial herb 3
Camassia quamash Camas Perennial herb 13
Camassia quamash ssp. breviflora Small camas Perennial herb 1
Camassia quamash ssp. quamash Common camas Perennial herb 3
Camissonia subacaulis Long leaved suncup Perennial herb  
Camissonia tanacetifolia Tansy leaf evening primrose Perennial herb  
Camissonia tanacetifolia ssp. quadriperforata Sierra valley evening primrose Perennial herb  
Camissonia tanacetifolia ssp. tanacetifolia Tansy leaved suncup Perennial herb  
Campanula prenanthoides Nodding harebell Perennial herb 2
Campanula rotundifolia Round leaf harebell Perennial herb 12
Campanula scabrella Rough harebell Perennial herb (rhizomatous)  
Campanula scouleri Scouler's harebell Perennial herb  
Campanula shetleri Castle crags harebell Perennial herb (rhizomatous)  
Campanula wilkinsiana Wilkins' harebell Perennial herb (rhizomatous)  
Cardamine angulata Seaside bitter cress Perennial herb  
Cardamine bellidifolia Alpine bittercress Perennial herb  
Cardamine bellidifolia var. pachyphylla Alpine bitter cress Perennial herb  
Cardamine breweri Brewer's bitter cress Perennial herb  
Cardamine californica milkmaids Perennial herb  
Cardamine californica var. californica Milk maids Perennial herb  
Cardamine californica var. cardiophylla Milk maids Perennial herb  
Cardamine californica var. integrifolia California toothwort Perennial herb  
Cardamine cordifolia Heartleaf bittercress Perennial herb  
Cardamine cordifolia var. lyallii Lyall's bitter cress Perennial herb  
Cardamine nuttallii Nuttall's toothwort Perennial herb  
Cardamine nuttallii var. covilleana Coville's toothwort Perennial herb  
Carex abrupta Abrupt beaked sedge Perennial grass  
Carex albida White sedge Perennial grass (rhizomatous)  
Carex amplectens Clasping bract sedge Perennial grass 1
Carex amplifolia Ample leaved sedge Perennial grass 3
Carex angustata Narrow leaved sedge Perennial grass 1
Carex aquatilis Water sedge Perennial grass 5
Carex aquatilis var. aquatilis Water sedge Perennial grass 1
Carex aquatilis var. dives Sitka sedge Perennial grass 3
Carex atherodes Slough sedge Perennial grass  
Carex athrostachya Slender leaved sedge Perennial grass 2
Carex aurea Golden fruited sedge Perennial grass  
Carex barbarae Valley sedge Perennial grass 24
Carex bella Southwestern showy sedge Perennial grass  
Carex bolanderi Bolander's sedge Perennial grass  
Carex brainerdii Brainerd's sedge Perennial grass  
Carex breweri Brewer's sedge Perennial grass  
Carex breweri var. breweri Brewer's sedge Perennial grass  
Carex buxbaumii Buxbaum's sedge Perennial grass  
Carex capitata Capitate sedge Perennial grass  
Carex concinnoides Northwestern sedge Perennial grass  
Carex cusickii Cusick's sedge Perennial grass 2
Carex deflexa var. boottii Mountain mat sedge Perennial grass  
Carex densa Sedge Perennial grass 8
Carex deweyana Dewey sedge Perennial grass 5
Carex deweyana ssp. leptopoda Dewey's taper fruit sedge Perennial grass 3
Carex diandra Lesser panicled sedge Perennial grass 1
Carex douglasii Douglas sedge Perennial grass 1
Carex dudleyi Dudley's sedge Perennial grass 8
Carex echinata Bristle fruit sedge Perennial grass 1
Carex echinata ssp. echinata Bristle fruit sedge Perennial grass  
Carex exsiccata Western inflated sedge Perennial grass 2
Carex feta Green sheathed sedge Perennial grass  
Carex fissuricola Cleft sedge Perennial grass  
Carex fracta Fragile sheathed sedge Perennial grass 1
Carex garberi Garber's sedge Perennial grass  
Carex geyeri Geyer's sedge Perennial grass (rhizomatous)  
Carex gigas Siskiyou sedge Perennial grass (rhizomatous)  
Carex globosa Round fruit sedge Perennial grass 5
Carex gracilior Slender sedge Perennial grass  
Carex halliana Hall's sedge Perennial grass (rhizomatous)  
Carex hassei Hasse's sedge Perennial grass  
Carex hendersonii Henderson's sedge Perennial grass  
Carex heteroneura Variable nerved sedge Perennial grass  
Carex heteroneura var. epapillosa Smooth nerve sedge Perennial grass  
Carex hoodii Hood's sedge Perennial grass  
Carex hystericina Bottlebrush sedge Perennial grass (rhizomatous) 1
Carex infirminervia Perennial grass  
Carex inops Long stolon sedge Perennial grass 1
Carex inops ssp. inops Long stolon sedge Perennial grass 2
Carex integra Smooth beak sedge Perennial grass  
Carex interior Inland sedge Perennial grass 1
Carex jonesii Jones' sedge Perennial grass  
Carex klamathensis Perennial grass  
Carex laeviculmis Smooth stem sedge Perennial grass 1
Carex lemmonii Lemmon's sedge Perennial grass  
Carex lenticularis Lakeshore sedge Perennial grass 1
Carex lenticularis var. impressa Lakeshore sedge Perennial grass  
Carex lenticularis var. lipocarpa Fat fruited sedge Perennial grass 1
Carex leporina Hare or oval sedge Perennial grass 1
Carex leporinella Sierra hare sedge Perennial grass  
Carex leptopoda Slender-footed sedge Perennial grass 5
Carex limosa Shore sedge Perennial grass (rhizomatous)  
Carex luzulifolia Littleleaf sedge Perennial grass  
Carex luzulina Wood rush sedge Perennial grass  
Carex luzulina var. ablata American cold loving sedge Perennial grass  
Carex luzulina var. luzulina Wood rush sedge Perennial grass  
Carex mariposana Mariposa sedge Perennial grass  
Carex mendocinensis Mendocino sedge Perennial grass  
Carex mertensii Mertens' sedge Perennial grass 3
Carex microptera Small wing sedge Perennial grass 2
Carex multicaulis Forest sedge Perennial grass  
Carex multicostata Many ribbed sedge Perennial grass  
Carex nardina Spike sedge Perennial grass  
Carex nebrascensis Nebraska sedge Perennial grass 2
Carex nervina Sierra nerved sedge Perennial grass  
Carex nigricans Black alpine sedge Perennial grass  
Carex nudata Torrent sedge Perennial grass 14
Carex occidentalis Western sedge Perennial grass  
Carex ovalis Egg sedge Perennial grass 1
Carex pachycarpa Furrowed broomsedge Perennial grass  
Carex pachystachya Thick headed sedge Perennial grass 2
Carex pellita Woolly sedge Perennial grass 7
Carex phaeocephala Mountain hare sedge Perennial grass  
Carex praegracilis Field sedge Perennial grass 28
Carex praticola Meadow sedge Perennial grass  
Carex preslii Presl's sedge Perennial grass 1
Carex proposita Great smoky mountain sedge Perennial grass  
Carex raynoldsii Raynold's sedge Perennial grass  
Carex rossii Ross' sedge Perennial grass 1
Carex scabriuscula Siskiyou sedge Perennial grass (rhizomatous)  
Carex scopulorum Mountain sedge Perennial grass  
Carex scopulorum var. bracteosa Bracted sedge Perennial grass  
Carex senta Rough sedge Perennial grass 3
Carex serratodens Bifid sedge Perennial grass 2
Carex simulata Short beaked sedge Perennial grass 2
Carex specifica Narrow fruit sedge Perennial grass  
Carex spectabilis Showy sedge Perennial grass 2
Carex stipata Awlfruit sedge Perennial grass 5
Carex stipata var. stipata Awl fruited sedge Perennial grass  
Carex straminiformis Straw like sedge Perennial grass  
Carex subbracteata Small bract sedge Perennial grass 3
Carex subfusca Brown sedge Perennial grass 8
Carex utriculata Beaked sedge Perennial grass 7
Carex vernacula Native sedge Perennial grass  
Carex vesicaria Blister sedge Perennial grass 3
Carex vesicaria var. major Western blister sedge Perennial grass 2
Carex vesicaria var. vesicaria Inflated sedge Perennial grass 2
Carex viridula Little green sedge Perennial grass 1
Carex viridula ssp. viridula Little green sedge Perennial grass  
Carex viridula var. viridula Green sedge Perennial grass  
Carex vulpinoidea Fox sedge Perennial grass 3
Carex whitneyi Whitney's sedge Perennial grass  
Castilleja affinis Indian paintbrush Perennial herb 1
Castilleja affinis ssp. affinis Coast indian paintbrush Perennial herb 1
Castilleja angustifolia Desert paintbrush Perennial herb 3
Castilleja applegatei Wavy leaf paintbrush Perennial herb 2
Castilleja applegatei ssp. martinii Martin's paintbrush Perennial herb 1
Castilleja applegatei ssp. pallida Brewer's indian paintbrush Perennial herb  
Castilleja applegatei ssp. pinetorum Pine wavy leaf paintbrush Perennial herb  
Castilleja arachnoidea Cobwebby paintbrush Perennial herb  
Castilleja brevilobata Short-lobed paintbrush Perennial herb  
Castilleja chromosa Desert paintbrush Perennial herb 3
Castilleja elata Siskiyou paintbrush Perennial herb  
Castilleja hispida Harsh indian paintbrush Perennial herb (hemiparasitic)  
Castilleja hispida ssp. brevilobata Short lobed indian paintbrush Perennial herb (hemiparasitic)  
Castilleja inflata Indian paintbrush Perennial herb  
Castilleja linariifolia Desert paintbursh Perennial herb 2
Castilleja miniata Great red paintbrush Perennial herb 6
Castilleja miniata ssp. elata Siskiyou indian paintbrush Perennial herb (hemiparasitic)  
Castilleja miniata ssp. miniata Scarlet indian paintbrush Perennial herb  
Castilleja pilosa Pilose paintbrush Perennial herb  
Castilleja pruinosa Frosted paintbrush Perennial herb (hemiparasitic)  
Castilleja schizotricha Split hair indian paintbrush Perennial herb (hemiparasitic)  
Catabrosa aquatica water whorlgrass Perennial herb  
Cephalanthera austiniae Phantom orchid Perennial herb  
Cerastium arvense Meadow chickweed Perennial herb 1
Cerastium arvense ssp. strictum Field chickweed Perennial herb  
Cerastium beeringianum Bering chickweed Perennial herb 1
Ceratophyllum demersum Hornwort Perennial herb 1
Chaenactis douglasii var. alpina Alpine dusty pincushion Perennial herb  
Chaenactis suffrutescens Shasta chaenactis Perennial herb  
Chamaesaracha nana Dwarf chamaesaracha Perennial herb  
Chamerion angustifolium Fireweed Perennial herb 14
Chamerion angustifolium ssp. circumvagum Fireweed Perennial herb 2
Chamerion latifolium Dwarf fireweed Perennial herb 3
Chimaphila menziesii Little prince's pine Perennial herb  
Chimaphila umbellata Blake's prince's pine Perennial herb  
Chlorogalum pomeridianum Amole Perennial herb 17
Chlorogalum pomeridianum var. pomeridianum Common soaproot Perennial herb 2
Cicuta douglasii Western water hemlock Perennial herb 1
Cicuta maculata Water hemlock Perennial herb 1
Cicuta maculata var. angustifolia Narrow leafed water hemlock Perennial herb  
Cicuta maculata var. maculata Spotted water hemlock Perennial herb  
Cinna latifolia Drooping wood reed Perennial grass  
Circaea alpina Small enchanter's nightshade Perennial herb  
Circaea alpina ssp. pacifica Pacific enchanter's nightshade Perennial herb  
Cirsium andersonii Anderson's thistle Perennial herb  
Cirsium andrewsii Franciscan thistle Perennial herb  
Cirsium brevistylum Indian thistle Perennial herb  
Cirsium canovirens Gray green thistle Perennial herb  
Cirsium ciliolatum Ashland thistle Perennial herb  
Cirsium congdonii Congdon's thistle Perennial herb  
Cirsium cymosum Peregrine thistle Perennial herb  
Cirsium cymosum var. canovirens Gray-green thistle Perennial herb  
Cirsium cymosum var. cymosum Peregrine thistle Perennial herb  
Cirsium douglasii Swamp thistle Perennial herb 1
Cirsium douglasii var. breweri Brewer's swamp thistle Perennial herb  
Cirsium inamoenum Greene's thistle Perennial herb  
Cirsium inamoenum var. inamoenum Greene's thistle Perennial herb  
Cirsium occidentale Western thistle Perennial herb 9
Cirsium occidentale var. californicum California thistle Perennial herb  
Cirsium occidentale var. candidissimum Snowy thistle Perennial herb  
Cirsium remotifolium Few leaved thistle Perennial herb  
Cirsium remotifolium var. odontolepis Pacific fringed thistle Perennial herb  
Cirsium remotifolium var. rivulare Klamath thistle Perennial herb  
Cirsium scariosum Elk thistle Perennial herb  
Cirsium scariosum var. robustum Elk thistle Perennial herb  
Cirsium subniveum Jackson hole thistle Perennial herb  
Claytonia cordifolia Heart leaf spring beauty Perennial herb  
Claytonia lanceolata Western spring beauty Perennial herb  
Claytonia obovata Rydberg's spring beauty Perennial herb  
Claytonia palustris Marsh claytonia Perennial herb  
Claytonia sibirica Candy flower Perennial herb 7
Claytonia umbellata Great basin claytonia Perennial herb  
Clematis ligusticifolia Creek clematis Perennial herb, Vine 32
Clinopodium douglasii Yerba buena Perennial herb 34
Clintonia uniflora Bride's bonnet Perennial herb 1
Collomia larsenii Talus collomia Perennial herb (rhizomatous)  
Comandra umbellata Bastard toadflax Perennial herb (parasitic)  
Comandra umbellata ssp. californica Bastard toadflax Perennial herb (parasitic)  
Corallorhiza maculata Summer coral root Perennial herb  
Corallorhiza mertensiana Merten's coral root Perennial herb  
Corallorhiza striata Striped coral root Perennial herb  
Cornus canadensis Bunch berry Perennial herb 9
Crepis acuminata Tall hawksbeard Perennial herb  
Crepis bakeri Baker's hawksbeard Perennial herb  
Crepis bakeri ssp. bakeri Baker's hawksbeard Perennial herb  
Crepis bakeri ssp. cusickii Cusick's hawksbeard Perennial herb  
Crepis intermedia Intermediate hawksbeard Perennial herb  
Crepis modocensis Modoc hawksbeard Perennial herb  
Crepis modocensis ssp. modocensis Modoc hawksbeard Perennial herb  
Crepis monticola Mountain hawk's beard Perennial herb  
Crepis occidentalis Western hawk's beard Perennial herb  
Crepis occidentalis ssp. conjuncta Largeflower hawksbeard Perennial herb  
Crepis occidentalis ssp. costata Largeflower hawksbeard Perennial herb  
Crepis occidentalis ssp. occidentalis Largeflower hawksbeard Perennial herb  
Crepis occidentalis ssp. pumila Largeflower hawksbeard Perennial herb  
Crepis pleurocarpa Naked stemmed hawksbeard Perennial herb  
Cryptantha celosioides Cocks comb cat's eye Perennial herb  
Cryptantha nubigena Sierra cryptantha Perennial herb  
Cryptantha schoolcraftii Schoolcraft's cryptantha Perennial herb  
Cryptantha sobolifera Sierra perennial cryptantha Perennial herb  
Cycladenia humilis Cycladenia Perennial herb 1
Cycladenia humilis var. humilis Cycladenia Perennial herb  
Cymopterus terebinthinus Turpentine cymopterus Perennial herb  
Cymopterus terebinthinus var. californicus Turpentine cymopterus Perennial herb  
Cynoglossum grande Houndstongue Perennial herb 5
Cynoglossum occidentale Hound's tongue Perennial herb  
Cyperus eragrostis Tall cyperus Perennial grass 12
Cyperus strigosus Straw colored cyperus Perennial grass 1
Cypripedium californicum California lady's slipper Perennial herb (rhizomatous)  
Cypripedium fasciculatum Clustered lady's slipper Perennial herb (rhizomatous)  
Cypripedium montanum Mountain lady's slipper Perennial herb (rhizomatous)  
Damasonium californicum California damsonium Perennial herb (aquatic)  
Danthonia californica California oatgrass Perennial grass 21
Danthonia californica var. americana American oatgrass Perennial grass 21
Danthonia californica var. californica California oatgrass Perennial grass 21
Danthonia intermedia Timber oatgrass Perennial grass 2
Danthonia intermedia ssp. intermedia Intermediate oat grass Perennial grass  
Danthonia unispicata One spiked oatgrass Perennial grass  
Darlingtonia californica California pitcherplant Perennial herb (carnivorous) 2
Darmera peltata Umbrella plant Perennial herb 14
Datisca glomerata Durango root Perennial herb 2
Delphinium andersonii Anderson larkspur Perennial herb 4
Delphinium antoninum Anthony peak larkspur Perennial herb  
Delphinium decorum Larkspur Perennial herb  
Delphinium decorum ssp. tracyi Tracy's larkspur Perennial herb  
Delphinium depauperatum Few flowered larkspur Perennial herb  
Delphinium glaucum Sierra larkspur Perennial herb 3
Delphinium nudicaule Canyon larkspur Perennial herb 3
Delphinium nuttallianum Nuttall's larkspur Perennial herb 2
Delphinium patens Spreading larkspur Perennial herb  
Delphinium variegatum Royal larkspur Perennial herb 1
Deschampsia atropurpurea Mountain hair grass Perennial grass 1
Deschampsia cespitosa Tufted hair grass Perennial grass 49
Deschampsia cespitosa ssp. cespitosa Tufted hairgrass Perennial grass 24
Deschampsia cespitosa ssp. holciformis Coastal tufted hair grass Perennial grass 8
Deschampsia elongata Hairgrass Perennial grass 17
Descurainia californica Sierra tansy mustard Perennial herb  
Descurainia incana Mountain tansy mustard Perennial herb  
Dicentra formosa Pacific bleedinghearts Perennial herb 25
Dicentra formosa ssp. formosa Bleeding heart Perennial herb 2
Dicentra formosa ssp. oregana Oregon bleeding heart Perennial herb  
Dicentra pauciflora Few flowered bleeding heart Perennial herb  
Dicentra uniflora Steers head Perennial herb  
Dichelostemma Xvenustum Rose firecracker flower Perennial herb  
Dichelostemma capitatum Blue dicks Perennial herb 15
Dichelostemma capitatum ssp. capitatum Wild hyacinth Perennial herb 2
Dichelostemma congestum Fork toothed ookow Perennial herb 7
Dichelostemma ida-maia Firecracker flower Perennial herb 7
Dichelostemma multiflorum Many flowered brodiaea Perennial herb 6
Dieteria canescens Hoary aster Perennial herb 1
Dieteria canescens var. canescens Hoary aster Perennial herb  
Dieteria canescens var. shastensis Shasta aster Perennial herb  
Dipterostemon capitatus Blue dicks Perennial herb 15
Dipterostemon capitatus ssp. capitatus Perennial herb 2
Disporum hookeri Fairy bells Perennial herb 11
Disporum smithii Fairy lantern Perennial herb 6
Distichlis spicata Salt grass Perennial grass 25
Dodecatheon alpinum Alpine shooting star Perennial herb 1
Dodecatheon conjugens Bonneville shooting star Perennial herb  
Dodecatheon hendersonii Shooting star Perennial herb 11
Dodecatheon jeffreyi Jeffrey's shooting star Perennial herb 3
Doellingeria breweri Perennial herb  
Doellingeria engelmannii Perennial herb 2
Doellingeria glabrata Siskiyou aster Perennial herb  
Doellingeria ledophylla var. covillei Perennial herb  
Doellingeria tomentella Brickellbush aster Perennial herb  
Draba aureola Golden draba Perennial herb  
Draba breweri Brewer's whitlow grass Perennial herb  
Draba carnosula Mt. eddy draba Perennial herb  
Draba howellii Howell's draba Perennial herb  
Draba pterosperma Winged seed draba Perennial herb  
Draperia systyla Violet draperia Perennial herb  
Drosera anglica Long leaved sundew Perennial herb (carnivorous)  
Drosera rotundifolia Round leaved sundew Perennial herb 1
Drymocallis glandulosa Sticky cinquefoil Perennial herb 11
Drymocallis glandulosa var. glandulosa Sticky cinquefoil Perennial herb  
Drymocallis glandulosa var. reflexa Sticky cinquefoil Perennial herb  
Drymocallis hansenii Yosemite woodbeauty Perennial herb  
Drymocallis lactea Perennial herb 1
Drymocallis lactea var. austiniae Austin's woodbeauty Perennial herb  
Drymocallis lactea var. lactea Sierran woodbeauty Perennial herb  
Drymocallis pseudorupestris False rock loving cinquefoil Perennial herb 1
Drymocallis pseudorupestris var. saxicola Cliff woodbeauty Perennial herb  
Drymocallis rhomboidea Common cinquefoil Perennial herb  
Dudleya cymosa Rock lettuce Perennial herb 19
Dudleya cymosa ssp. cymosa Canyon dudleya Perennial herb 3
Dugaldia hoopesii Hoope's sneezeweed Perennial herb 7
Dulichium arundinaceum Three way sedge Perennial grass 1
Eleocharis acicularis Needle spikerush Perennial grass 2
Eleocharis acicularis var. acicularis Needle spike rush Perennial grass  
Eleocharis acicularis var. bella Beautiful spikerush Perennial grass  
Eleocharis bella Beautiful spikerush Perennial grass  
Eleocharis coloradoensis Dwarf spikerush Perennial grass 2
Eleocharis macrostachya Spike rush Perennial grass 18
Eleocharis montevidensis Montevideo spike rush Perennial grass 2
Eleocharis palustris Common spikerush Perennial grass 8
Eleocharis parishii Parish's spike rush Perennial grass  
Eleocharis pauciflora Few flowered spike rush Perennial grass  
Eleocharis quinqueflora Fewflower spikerush Perennial grass  
Eleocharis rostellata Walking sedge Perennial grass 1
Eleocharis suksdorfiana Suksdorf's spikerush Perennial grass  
Elodea canadensis Common water weed Perennial herb  
Elymus Xhansenii Perennial grass  
Elymus cinereus Great basin wild rye Perennial grass 8
Elymus condensatus Giant wild rye Perennial grass 31
Elymus elymoides Squirrel tail grass Perennial grass 14
Elymus elymoides ssp. brevifolius Short leaved squirreltail Perennial grass  
Elymus elymoides ssp. californicus California squirreltail Perennial grass  
Elymus elymoides ssp. elymoides Squirreltail Perennial grass  
Elymus elymoides ssp. hordeoides Barley squirreltail Perennial grass  
Elymus elymoides var. brevifolius Squirrel tail grass Perennial grass  
Elymus elymoides var. californicus Squirrel tail grass Perennial grass  
Elymus elymoides var. elymoides Squirrel tail grass Perennial grass  
Elymus glaucus Blue wildrye Perennial grass 32
Elymus glaucus ssp. glaucus Blue wild rye Perennial grass 1
Elymus glaucus ssp. jepsonii Western rye grass Perennial grass 1
Elymus lanceolatus Thickspike wheatgrass Perennial grass 3
Elymus lanceolatus ssp. lanceolatus Northern wheatgrass Perennial grass 4
Elymus multisetus Big squirreltail grass Perennial grass 12
Elymus smithii Western wheat grass Perennial grass 6
Elymus spicatus Blue bunch wheat grass Perennial grass 7
Elymus stebbinsii Stebbins' wildrye Perennial grass  
Elymus stebbinsii ssp. septentrionalis Stebbins' wildrye Perennial grass  
Elymus trachycaulus Slender wheatgrass Perennial grass 8
Elymus trachycaulus ssp. subsecundus Bearded wheatgrass Perennial grass 2
Elymus trachycaulus ssp. trachycaulus Slender wheatgrass Perennial grass 7
Elymus triticoides Beardless wild rye Perennial grass 29
Enemion occidentale Western false rue anemone Perennial herb  
Enemion stipitatum Siskiyou false rue anemone Perennial herb  
Epilobium anagallidifolium Alpine willowherb Perennial herb  
Epilobium angustifolium ssp. angustifolium Fireweed Perennial herb 2
Epilobium angustifolium ssp. circumvagum Fireweed Perennial herb 1
Epilobium canum California fuchsia Perennial herb 50
Epilobium canum ssp. latifolium California fushia Perennial herb 5
Epilobium ciliatum Slender willow herb Perennial herb 2
Epilobium ciliatum ssp. ciliatum Willow herb Perennial herb 2
Epilobium ciliatum ssp. glandulosum Glandular willowherb Perennial herb 1
Epilobium clavatum Club fruit willowherb Perennial herb  
Epilobium glaberrimum Smooth willowherb Perennial herb  
Epilobium glaberrimum ssp. fastigiatum Smooth willowherb Perennial herb  
Epilobium glaberrimum ssp. glaberrimum Smooth willowherb Perennial herb  
Epilobium halleanum Hairy willowherb Perennial herb  
Epilobium hallianum Hall's willowherb Perennial herb  
Epilobium hornemannii Hornemann's willowherb Perennial herb  
Epilobium hornemannii ssp. hornemannii Hornemann's willow herb Perennial herb  
Epilobium lactiflorum White flowered willowherb Perennial herb  
Epilobium latifolium River beauty Perennial herb 3
Epilobium luteum Yellow willowherb Perennial herb  
Epilobium obcordatum Heart willowweed Perennial herb  
Epilobium oreganum Oregon fireweed Perennial herb  
Epilobium oregonense Slimstem willowweed Perennial herb  
Epilobium rigidum Siskiyou mtns. willowherb Perennial herb  
Epilobium septentrionale Humboldt county fuchsia Perennial herb 9
Epilobium siskiyouense Siskiyou fireweed Perennial herb  
Epipactis gigantea Stream orchid Perennial herb 16
Eremogone aculeata Prickly sandwort Perennial herb  
Eremogone congesta Capitate sandwort Perennial herb  
Eremogone congesta var. congesta Capitate sandwort Perennial herb  
Eremogone congesta var. crassula Rough sandwort Perennial herb  
Eremogone congesta var. subcongesta Capitate sandwort Perennial herb  
Eremogone congesta var. suffrutescens Suffrutescent sandwort Perennial herb  
Eremogone kingii King's sandwort Perennial herb 1
Eremogone kingii var. glabrescens King's smooth sandwort Perennial herb  
Erigeron aliceae Alice eastwood's fleabane Perennial herb  
Erigeron aphanactis Rayless shaggy fleabane Perennial herb  
Erigeron aphanactis var. aphanactis Rayless shaggy fleabane Perennial herb  
Erigeron aphanactis var. congestus Clustered fleabane Perennial herb  
Erigeron austiniae Rebecca austin's fleabane Perennial herb  
Erigeron bloomeri Scabland fleabane Perennial herb  
Erigeron bloomeri var. bloomeri Scabland fleabane Perennial herb  
Erigeron bloomeri var. nudatus Waldo daisy Perennial herb  
Erigeron breweri Brewer's fleabane Perennial herb  
Erigeron breweri var. klamathensis Klamath fleabane Perennial herb  
Erigeron cervinus Siskiyou daisy Perennial herb (rhizomatous)  
Erigeron chrysopsidis Dwarf yellow fleabane Perennial herb 1
Erigeron chrysopsidis var. austiniae Rebecca austin's fleabane Perennial herb  
Erigeron compositus Cut leaved daisy Perennial herb 4
Erigeron coulteri Coulter's daisy Perennial herb  
Erigeron eatonii Eaton's daisy Perennial herb  
Erigeron eatonii var. plantagineus Eaton's daisy Perennial herb  
Erigeron elegantulus Volcanic daisy Perennial herb  
Erigeron filifolius Threadleaf fleabane Perennial herb  
Erigeron filifolius var. filifolius Thread leaved fleabane Perennial herb  
Erigeron foliosus Leafy daisy Perennial herb  
Erigeron foliosus var. confinis Leafy fleabane Perennial herb  
Erigeron foliosus var. hartwegii Hartweg's fleabane Perennial herb  
Erigeron foliosus var. mendocinus Mendocino fleabane Perennial herb  
Erigeron glacialis Wandering fleabane Perennial herb 3
Erigeron glacialis var. glacialis Wandering fleabane Perennial herb  
Erigeron glacialis var. hirsutus Wandering fleabane Perennial herb  
Erigeron inornatus Rayless fleabane Perennial herb  
Erigeron inornatus var. calidipetris Hot rock daisy Perennial herb  
Erigeron inornatus var. inornatus Fleabane Perennial herb  
Erigeron klamathensis Klamath fleabane Perennial herb  
Erigeron linearis Narrow leaved fleabane Perennial herb 3
Erigeron lobatus Lobed fleabane Perennial herb 4
Erigeron miser Starved daisy Perennial herb  
Erigeron nivalis Northern daisy Perennial herb  
Erigeron peregrinus Wandering fleabane Perennial herb 3
Erigeron peregrinus var. callianthemus Wandering fleabane Perennial herb  
Erigeron peregrinus var. hirsutus Wandering fleabane Perennial herb  
Erigeron petrophilus Cliff fleabane Perennial herb  
Erigeron petrophilus var. petrophilus Cliff fleabane Perennial herb  
Erigeron petrophilus var. viscidulus Klamath daisy Perennial herb (rhizomatous)  
Erigeron philadelphicus Philadelphia fleabane Perennial herb  
Erigeron philadelphicus var. philadelphicus Philadelphia fleabane Perennial herb  
Erigeron pumilus Shaggy fleabane Perennial herb  
Erigeron pumilus ssp. intermedius Shaggy fleabane Perennial herb  
Erigeron pumilus var. gracilior Shaggy fleabane Perennial herb  
Erigeron pumilus var. intermedius Shaggy fleabane Perennial herb  
Erigeron reductus Fleabane Perennial herb  
Erigeron reductus var. angustatus Pine erigeron Perennial herb  
Erigeron tener Slender fleabane Perennial herb  
Eriodictyon lobbii Matted yerba santa Perennial herb 1
Eriogonum alpinum Trinity buckwheat Perennial herb (rhizomatous)  
Eriogonum compositum Arrowleaf buckwheat Perennial herb 3
Eriogonum compositum var. compositum Arrow leaf buckwheat Perennial herb  
Eriogonum diclinum Jaynes canyon buckwheat Perennial herb  
Eriogonum douglasii Douglas' buckwheat Perennial herb 1
Eriogonum douglasii var. douglasii Douglas' buckwheat Perennial herb  
Eriogonum douglasii var. meridionale Douglas' buckwheat Perennial herb 1
Eriogonum elatum Tall buckwheat Perennial herb  
Eriogonum elatum var. elatum Tall buckwheat Perennial herb  
Eriogonum elatum var. villosum Long hairy tall buckwheat Perennial herb  
Eriogonum hirtellum Klamath mtn. buckwheat Perennial herb (rhizomatous)  
Eriogonum incanum Frosted buckwheat Perennial herb 1
Eriogonum libertini Dubakella mtn. buckwheat Perennial herb  
Eriogonum lobbii Lobb's buckwheat Perennial herb  
Eriogonum lobbii var. lobbii Lobb's buckwheat Perennial herb  
Eriogonum microtheca Slender buckwheat Perennial herb  
Eriogonum microtheca var. ambiguum Yellow-flowered wild buckwheat Perennial herb  
Eriogonum microtheca var. laxiflorum Great basin wild buckwheat Perennial herb  
Eriogonum ovalifolium Oval leaved eriogonum Perennial herb 4
Eriogonum ovalifolium var. nivale Cushion buckwheat Perennial herb 1
Eriogonum ovalifolium var. ovalifolium Cushion buckwheat Perennial herb  
Eriogonum ovalifolium var. purpureum Purple cushion buckwheat Perennial herb  
Eriogonum ovalifolium var. vineum Cushenbury buckwheat Perennial herb  
Eriogonum pyrolifolium Shasta buckwheat Perennial herb, Shrub  
Eriogonum pyrolifolium var. pyrolifolium Pumice buckwheat Perennial herb, Shrub  
Eriogonum siskiyouense Siskiyou buckwheat Perennial herb 3
Eriogonum sphaerocephalum Round headed buckwheat Perennial herb  
Eriogonum sphaerocephalum var. halimioides Round headed buckwheat Perennial herb  
Eriogonum strictum Blue mountain buckwheat Perennial herb 1
Eriogonum strictum var. anserinum Blue mountain buckwheat Perennial herb  
Eriogonum strictum var. greenei Greene's buckwheat Perennial herb  
Eriogonum strictum var. proliferum Blue mountain buckwheat Perennial herb 1
Eriogonum ternatum Ternate buckwheat Perennial herb  
Eriogonum umbellatum Sulphur buckwheat Perennial herb 26
Eriogonum umbellatum var. argus Sulphur buckwheat Perennial herb  
Eriogonum umbellatum var. bahiiforme Sulphur buckwheat Perennial herb  
Eriogonum umbellatum var. covillei Coville's sulphur buckwheat Perennial herb  
Eriogonum umbellatum var. dumosum Many flowered sulfur flower Perennial herb 3
Eriogonum umbellatum var. furcosum Desert sulfur buckwheat Perennial herb  
Eriogonum umbellatum var. glaberrimum Green buckwheat Perennial herb  
Eriogonum umbellatum var. goodmanii Serpentine sulphur buckwheat Perennial herb  
Eriogonum umbellatum var. humistratum Mt. Eddy buckwheat Perennial herb  
Eriogonum umbellatum var. lautum Scott valley buckwheat Perennial herb  
Eriogonum umbellatum var. modocense Sulphur flower buckwheat Perennial herb 2
Eriogonum umbellatum var. nelsoniorum Sulphur buckwheat Perennial herb  
Eriogonum umbellatum var. nevadense Sierra sulfur flower Perennial herb 2
Eriogonum umbellatum var. polyanthum Many flowered sulfur flower Perennial herb 6
Eriogonum umbellatum var. smallianum Sulphur buckwheat Perennial herb  
Eriogonum umbellatum var. speciosum Showy sulfur buckwheat Perennial herb  
Eriogonum umbellatum var. torreyanum Donner pass buckwheat Perennial herb  
Eriogonum ursinum Bear buckwheat Perennial herb 4
Eriogonum ursinum var. erubescens Blushing wild buckwheat Perennial herb  
Eriophorum criniger Cotton grass Perennial grass  
Eriophorum crinigerum Fringed cottongrass Perennial grass  
Eriophorum gracile Slender cotton grass Perennial grass  
Eriophyllum lanatum Wooly sunflower Perennial herb 27
Eriophyllum lanatum var. achillaeoides Yarrow leaved woolly sunflower Perennial herb 2
Eriophyllum lanatum var. achilleoides Yarrow leaved woolly sunflower Perennial herb 2
Eriophyllum lanatum var. grandiflorum Large flowered woolly sunflower Perennial herb 1
Eriophyllum lanatum var. integrifolium Oregon sunshine Perennial herb  
Eriophyllum lanatum var. lanceolatum Lance leaved woolly sunflower Perennial herb  
Eryngium alismifolium Coyote thistle Perennial herb  
Eryngium aristulatum Jepson's button celery Perennial herb 2
Eryngium aristulatum var. aristulatum Jepson's button celery Perennial herb  
Eryngium articulatum Coyote thistle Perennial herb 1
Eryngium jepsonii Perennial herb  
Eryngium mathiasiae Mathias' button celery Perennial herb  
Erysimum argillosum Western wallflower Perennial herb  
Erysimum capitatum Wallflower Perennial herb 10
Erysimum capitatum var. angustatum Contra costa wallflower Perennial herb 1
Erysimum capitatum var. bealianum Western wallflower Perennial herb 1
Erysimum capitatum var. capitatum Sanddune wallflower Perennial herb 1
Erysimum capitatum var. lompocense San luis obispo wallflower Perennial herb 1
Erysimum capitatum var. perenne Sanddune wallflower Perennial herb  
Erysimum capitatum var. purshii Pursh's wallflower Perennial herb  
Erysimum menziesii Menzies' wallflower Perennial herb 7
Erysimum perenne Sanddune wallflower Perennial herb  
Erythranthe cardinalis Cardinal monkey flower Perennial herb 41
Erythranthe lewisii Lewis' monkey flower Perennial herb 12
Erythranthe linearifolia Primrose monkeyflower Perennial herb 3
Erythranthe moschata Musk monkeyflower Perennial herb 1
Erythranthe nasuta Perennial herb  
Erythranthe primuloides Primrose monkeyflower Perennial herb  
Erythranthe ptilota Muskflower Perennial herb  
Erythranthe tilingii Larger mountain monkeyflower Perennial herb 3
Erythronium californicum California fawn lily Perennial herb (bulb) 1
Erythronium citrinum Lemon colored fawn lily Perennial herb (bulb) 1
Erythronium citrinum var. citrinum Lemon colored fawn lily Perennial herb (bulb)  
Erythronium grandiflorum Glacier lily Perennial herb (bulb) 5
Erythronium grandiflorum ssp. grandiflorum Glacier lily Perennial herb (bulb) 1
Erythronium grandiflorum var. pallidum California glacier lily Perennial herb (bulb)  
Erythronium hendersonii Henderson's fawn lily Perennial herb (bulb)  
Erythronium howellii Howell's fawn lily Perennial herb (bulb)  
Erythronium klamathense Klamath fawn lily Perennial herb (bulb)  
Erythronium oregonum Oregon fawn lily Perennial herb (bulb) 8
Erythronium purpurascens Purple fawn lily Perennial herb (bulb) 2
Erythronium revolutum Mahogany fawn lily Perennial herb (bulb) 5
Eschscholzia californica ssp. californica California poppy Perennial herb 2
Eschscholzia procera Kernville poppy Perennial herb 2
Eucephalus breweri Brewer's aster Perennial herb  
Eucephalus engelmannii Engelmann's aster Perennial herb 1
Eucephalus glabratus Smooth aster Perennial herb  
Eucephalus ledophyllus Cascade aster Perennial herb  
Eucephalus ledophyllus var. covillei Cascade aster Perennial herb  
Eucephalus tomentellus Rayless aster Perennial herb  
Euphorbia lurida Woodland spurge Perennial herb  
Euphorbia palmeri Woodland spurge Perennial herb  
Eurybia integrifolia Thickstem aster Perennial herb  
Eurybia merita Subalpine aster Perennial herb  
Eurybia radulina Roughleaf aster Perennial herb 3
Euthamia occidentalis Western goldenrod Perennial herb 15
Festuca californica California fescue Perennial grass 48
Festuca californica ssp. californica Perennial grass 6
Festuca elmeri Coast fescue Perennial grass  
Festuca idahoensis Blue fescue Perennial grass 53
Festuca occidentalis Western fescue Perennial grass 8
Festuca roemeri var. klamathensis Idaho fescue Perennial grass 48
Festuca roemeri var. roemeri Perennial grass  
Festuca rubra Red fescue Perennial grass 39
Festuca subulata Bearded fescue Perennial grass  
Festuca subuliflora Coast range fescue Perennial grass  
Festuca viridula Mountain bunch fescue Perennial grass  
Fragaria crinita Beach strawberry Perennial herb 34
Fragaria vesca Wild strawberry Perennial herb 35
Fragaria virginiana Mountain strawberry Perennial herb 12
Frasera albicaulis Whitestem frasera Perennial herb  
Frasera albicaulis var. modocensis Modoc frasera Perennial herb  
Frasera albicaulis var. nitida Whitestem frasera Perennial herb  
Frasera speciosa Monument plant Perennial herb  
Fritillaria affinis Checker lily Perennial herb (bulb) 7
Fritillaria affinis var. affinis Checker lily Perennial herb (bulb) 4
Fritillaria atropurpurea Spotted mountain bells Perennial herb 2
Fritillaria eastwoodiae Butte county fritillary Perennial herb (bulb) 1
Fritillaria gentneri Gentner's fritillary Perennial herb  
Fritillaria glauca Siskiyou missionbells Perennial herb 1
Fritillaria lanceolata var. tristulis Marin checker lily Perennial herb 4
Fritillaria micrantha Brown bells Perennial herb  
Fritillaria pudica Yellow fritillary Perennial herb 4
Fritillaria purdyi Purdy's fritillary Perennial herb (bulb) 1
Fritillaria recurva Scarlet fritillary Perennial herb 1
Galium ambiguum Yolla bolly bedstraw Perennial herb  
Galium ambiguum ssp. siskiyouense Siskiyou bedstraw Perennial herb  
Galium ambiguum var. siskiyouense Siskiyou bedstraw Perennial herb  
Galium bolanderi Bolander's bedstraw Perennial herb  
Galium boreale Northern bedstraw Perennial herb  
Galium boreale ssp. septentrionale Northern bedstraw Perennial herb  
Galium californicum California bedstraw Perennial herb  
Galium glabrescens Castle lake bedstraw Perennial herb  
Galium glabrescens ssp. glabrescens Castle lake bedstraw Perennial herb  
Galium grayanum Gray's bedstraw Perennial herb  
Galium grayanum var. grayanum Gray's bedstraw Perennial herb  
Galium mexicanum Mexican bedstraw Perennial herb  
Galium mexicanum ssp. asperulum Mexican bedstraw Perennial herb  
Galium mexicanum var. asperulum Mexican bedstraw Perennial herb  
Galium multiflorum Many flowered bedstraw Perennial herb  
Galium muricatum Humboldt bedstraw Perennial herb  
Galium oreganum Oregon bedstraw Perennial herb (rhizomatous)  
Galium serpenticum Northern bedstraw Perennial herb  
Galium serpenticum ssp. scotticum Scott mtn. bedstraw Perennial herb  
Galium trifidum Three petaled bedstraw Perennial herb  
Galium trifidum ssp. columbianum Threepetal bedstraw Perennial herb  
Galium trifidum ssp. subbiflorum Threepetal bedstraw Perennial herb  
Galium trifidum var. pacificum Bedstraw Perennial herb  
Galium trifidum var. pusillum Small bedstraw Perennial herb  
Gentiana calycosa Rainier pleated gentian Perennial herb  
Gentiana newberryi Alpine gentian Perennial herb 2
Gentiana newberryi var. newberryi Alpine gentian Perennial herb  
Gentiana plurisetosa Klamath gentian Perennial herb 1
Gentiana setigera Mendocino gentian Perennial herb 1
Geranium oreganum Oregon geranium Perennial herb 2
Geranium viscosissimum Sticky geranium Perennial herb 2
Geum aleppicum Aleppo avens Perennial herb  
Geum macrophyllum Large leaved avens Perennial herb 8
Geum macrophyllum var. perincisum Largeleaf avens Perennial herb  
Geum triflorum Old man's beard Perennial herb 7
Geum triflorum var. ciliatum Prairie-smoke Perennial herb 1
Glyceria borealis Northern mannagrass Perennial grass 1
Glyceria davyi Davy mannagrass Perennial grass  
Glyceria elata Tall mannagrass Perennial grass 8
Glyceria leptostachya Manna grass Perennial grass (aquatic)  
Glyceria occidentalis Waxy mannagrass Perennial grass (aquatic) 2
Glyceria striata Fowl mannagrass Perennial grass 8
Glycyrrhiza lepidota Lichorice Perennial herb 1
Gnaphalium canescens Everlasting cudweed Perennial herb 3
Gnaphalium canescens ssp. thermale Small headed cudweed Perennial herb  
Goodyera oblongifolia Rattlesnake plantain Perennial herb 4
Grindelia camporum Gumweed Perennial herb 13
Grindelia camporum var. camporum Great valley gumweed Perennial herb 1
Grindelia hirsutula Gumweed Perennial herb 12
Grindelia hirsutula var. davyi Davy's gumweed Perennial herb 12
Grindelia nana Idaho gumweed Perennial herb  
Hackelia bella Greater showy stickseed Perennial herb  
Hackelia brevicula Poison canyon stickseed Perennial herb  
Hackelia californica California stickseed Perennial herb  
Hackelia cusickii Cusick stickweed Perennial herb  
Hackelia micrantha Jessica's stickseed Perennial herb  
Hackelia mundula Pink stickseed Perennial herb  
Hackelia nervosa Sierran stickseed Perennial herb  
Hackelia setosa Bristly stickseed Perennial herb  
Hastingsia alba White hastingsia Perennial herb 2
Hastingsia serpentinicola Siskiyou hastingsia Perennial herb  
Hazardia whitneyi Whitney's bristleweed Perennial herb  
Hazardia whitneyi var. discoidea Rayless whitney's goldenbush Perennial herb  
Helenium autumnale Common sneezeweed Perennial herb 8
Helenium bigelovii Bigelow's sneezeweed Perennial herb 8
Helenium puberulum Sneezeweed Perennial herb 9
Helianthella californica California helianthella Perennial herb 5
Helianthella californica var. nevadensis California helianthella Perennial herb 1
Helianthella californica var. shastensis Shasta helianthella Perennial herb  
Helianthus cusickii Cusick's sunflower Perennial herb  
Heliotropium curassavicum Chinese parsley Perennial herb 8
Heliotropium curassavicum var. oculatum Seaside heliotrope Perennial herb 2
Hemieva ranunculifolia Buttercup-leaf suksdorfia Perennial herb  
Hemitomes congestum Gnome plant Perennial herb (mycoparasitic)  
Heracleum lanatum Cow parsnip Perennial herb 20
Heracleum maximum Common cow parsnip Perennial herb 20
Hesperochiron californicus California hesperochiron Perennial herb  
Hesperochiron pumilus Dwarf hesperochiron Perennial herb  
Hesperostipa comata Needle & thread grass Perennial grass 10
Hesperostipa comata ssp. comata Needle & thread grass Perennial grass 1
Heterotheca oregona Oregon golden aster Perennial herb  
Heterotheca oregona var. compacta Compact oregon goldenaster Perennial herb  
Heterotheca oregona var. oregona Oregon goldenaster Perennial herb  
Heterotheca oregona var. rudis Red oregon goldenaster Perennial herb  
Heterotheca villosa Hairy goldenaster Perennial herb 10
Heterotheca villosa var. hispida Hairy goldenaster Perennial herb  
Heterotheca villosa var. minor Hairy false goldenaster Perennial herb  
Heterotheca villosa var. villosa Hairy goldenaster Perennial herb  
Heuchera cylindrica Roundleaf alumroot Perennial herb 8
Heuchera cylindrica var. alpina Alpine alumroot Perennial herb 8
Heuchera merriamii Merriam's alumroot Perennial herb 1
Heuchera micrantha Alum root Perennial herb 34
Heuchera micrantha var. diversifolia Crevice alumroot Perennial herb 32
Heuchera micrantha var. erubescens Crevice alumroot Perennial herb 31
Heuchera micrantha var. macropetala Crevice alumroot Perennial herb 31
Heuchera pringlei Merriam's alumroot Perennial herb 1
Heuchera rubescens Pink alumroot Perennial herb 6
Heuchera rubescens var. glandulosa Pink alumroot Perennial herb 6
Hieracium albiflorum White flowered hawkweed Perennial herb 1
Hieracium bolanderi Bolander's hawkweed Perennial herb  
Hieracium gracile Alpine hawkweed Perennial herb  
Hieracium greenei Greene's hawkweed Perennial herb  
Hieracium horridum Shaggy hawkweed Perennial herb  
Hieracium nudicaule Naked stemmed scouler's hawkweed Perennial herb  
Hieracium parryi Scouler's woollyweed Perennial herb  
Hieracium scouleri Hounds tongue hawkweed Perennial herb  
Hieracium scouleri var. nudicaule Naked stemmed scouler's hawkweed Perennial herb  
Hieracium triste Woolly hawkweed Perennial herb  
Hierochloe hirta Northern sweetgrass Perennial grass 1
Hierochloe odorata Vanilla grass Perennial grass (rhizomatous) 9
Hippuris vulgaris Mare's tail Perennial herb (aquatic) 1
Hordeum brachyantherum Meadow barley Perennial grass 25
Hordeum brachyantherum ssp. brachyantherum Meadow barley Perennial grass 4
Hordeum brachyantherum ssp. californicum Meadow barley Perennial grass 7
Hordeum jubatum Fox tail barley Perennial grass 7
Horkelia daucifolia Carrot leafed horkelia Perennial herb  
Horkelia daucifolia var. daucifolia Carrot leafed horkelia Perennial herb  
Horkelia daucifolia var. indicta Jepson's horkelia Perennial herb  
Horkelia fusca Tawny horkelia Perennial herb  
Horkelia fusca ssp. capitata Dark horkelia Perennial herb  
Horkelia fusca ssp. parviflora Dusky horkelia Perennial herb  
Horkelia fusca ssp. tenella Pinewoods horkelia Perennial herb  
Horkelia fusca var. brownii Tawny horkelia Perennial herb  
Horkelia fusca var. parviflora Tawny horkelia Perennial herb  
Horkelia fusca var. pseudocapitata Tawny horkelia Perennial herb  
Horkelia fusca var. tenella Tawny horkelia Perennial herb  
Horkelia hendersonii Henderson's horkelia Perennial herb 1
Horkelia sericata Howell's horkelia Perennial herb  
Horkelia tridentata Three toothed horkelia Perennial herb  
Horkelia tridentata ssp. flavescens Three toothed horkelia Perennial herb  
Horkelia tridentata ssp. tridentata Three toothed horkelia Perennial herb  
Horkelia tridentata var. flavescens Three toothed horkelia Perennial herb  
Horkelia tridentata var. tridentata Three toothed horkelia Perennial herb  
Hosackia crassifolia Broad leaved lotus Perennial herb 6
Hosackia crassifolia var. crassifolia Broad leaved lotus Perennial herb 2
Hosackia oblongifolia Narrow leaved lotus Perennial herb 2
Hosackia oblongifolia var. oblongifolia Narrow leaved lotus Perennial herb 1
Hosackia pinnata Pinnate lotus Perennial herb  
Hosackia stipularis Stipulate lotus Perennial herb  
Hosackia stipularis var. ottleyi Ottley's stipulate lotus Perennial herb  
Howellanthus dalesianus Scott mountain phacelia Perennial herb  
Hulsea nana Dwarf hulsea Perennial herb  
Hydrophyllum alpestre Alpine breeches Perennial herb  
Hydrophyllum capitatum Ballhead waterleaf Perennial herb  
Hydrophyllum capitatum var. alpinum Woolen breeches Perennial herb  
Hydrophyllum fendleri Fendler's waterleaf Perennial herb  
Hydrophyllum fendleri var. albifrons White fendler's waterleaf Perennial herb  
Hydrophyllum occidentale Western waterleaf Perennial herb 1
Hydrophyllum tenuipes Pacific waterleaf Perennial herb 3
Hymenoxys hoopesii Owl's claws Perennial herb 10
Hymenoxys lemmonii Lemmon's goldflower Perennial herb  
Hypericum formosum St john's wort Perennial herb  
Hypericum formosum var. scouleri Scouler's st. john's wort Perennial herb 2
Hypericum scouleri Scouler's st john's wort Perennial herb 2
Iliamna bakeri Baker's globe mallow Perennial herb 1
Iliamna latibracteata California globe mallow Perennial herb  
Ipomopsis aggregata Scarlet gilia Perennial herb 7
Ipomopsis aggregata ssp. aggregata Scarlet gilia Perennial herb 2
Ipomopsis aggregata ssp. bridgesii Bridge's gilia Perennial herb  
Ipomopsis aggregata ssp. formosissima Western scarlet gilia Perennial herb  
Ipomopsis arizonica Arizona scarlet gilia Perennial herb  
Ipomopsis congesta Ball headed gilia Perennial herb  
Ipomopsis congesta ssp. congesta Ball headed gilia Perennial herb  
Ipomopsis congesta ssp. montana Mountain ball headed gilia Perennial herb  
Ipomopsis congesta ssp. palmifrons Ball headed gilia Perennial herb  
Ipomopsis tenuifolia Slender leaved ipomopsis Perennial herb 2
Iris bracteata Siskiyou iris Perennial herb (rhizomatous) 2
Iris chrysophylla Golden leaved iris Perennial herb 5
Iris innominata Del norte county iris Perennial herb (rhizomatous) 7
Iris macrosiphon Ground iris Perennial herb 8
Iris missouriensis Western blue flag Perennial herb 25
Iris purdyi Purdy's iris Perennial herb 2
Iris tenax Toughleaf iris Perennial herb (rhizomatous) 13
Iris tenax ssp. klamathensis Orleans iris Perennial herb (rhizomatous)  
Iris tenuissima Slender iris Perennial herb 1
Iris tenuissima ssp. tenuissima Slender iris Perennial herb  
Iris thompsonii Thompson's iris Perennial herb  
Isopyrum occidentale Western false rue anemone Perennial herb  
Isopyrum stipitatum Siskiyou rue anemone Perennial herb  
Iva axillaris Povertyweed Perennial herb  
Iva axillaris ssp. robustior Poverty weed Perennial herb  
Ivesia gordonii Alpine ivesia Perennial herb  
Ivesia gordonii var. alpicola Alpine ivesia Perennial herb  
Ivesia gordonii var. ursinorum Alpine ivesia Perennial herb  
Ivesia longibracteata Castle crags ivesia Perennial herb  
Ivesia pickeringii Pickering's ivesia Perennial herb  
Juncus acuminatus Sharp fruited rush Perennial grass 3
Juncus articulatus Jointed rush Perennial grass 2
Juncus balticus Wire rush Perennial grass 19
Juncus balticus ssp. ater Baltic rush Perennial grass 2
Juncus bolanderi Bolander's rush Perennial grass 4
Juncus brachyphyllus Short leaved rush Perennial grass  
Juncus bufonius var. occidentalis Round fruited toad rush Perennial grass  
Juncus confusus Colorado rush Perennial grass  
Juncus covillei Coville's rush Perennial grass  
Juncus covillei var. covillei Coville's rush Perennial grass  
Juncus drummondii Drummond's rush Perennial grass  
Juncus dubius Mariposa rush Perennial grass 1
Juncus dudleyi Dudley's rush Perennial grass 1
Juncus effusus Common bog rush Perennial grass 44
Juncus effusus ssp. pacificus Pacific rush Perennial grass 6
Juncus effusus var. brunneus Common bog rush Perennial grass 3
Juncus effusus var. exiguus Common bog rush Perennial grass  
Juncus effusus var. gracilis Slender common rush Perennial grass  
Juncus effusus var. pacificus Pacific bog rush Perennial grass 6
Juncus ensifolius Sword leaved rush Perennial grass 7
Juncus exiguus Klamath or weak rush Perennial grass  
Juncus hesperius Coast or bog rush Perennial grass 3
Juncus howellii Howell's rush Perennial grass  
Juncus laccatus Shiny rush Perennial grass  
Juncus mertensianus Merten's rush Perennial grass 1
Juncus mexicanus Mexican rush Perennial grass 10
Juncus nevadensis Sierra rush Perennial grass 1
Juncus nevadensis var. nevadensis Nevada or sierran rush Perennial grass  
Juncus occidentalis Slender juncus Perennial grass 4
Juncus orthophyllus Straight leaved rush Perennial grass 1
Juncus oxymeris Pointed rush Perennial grass 1
Juncus parryi Parry's rush Perennial grass  
Juncus patens Rush Perennial grass 48
Juncus regelii Regel's rush Perennial grass (rhizomatous)  
Juncus saximontanus Rocky mountain rush Perennial grass  
Juncus tenuis Slender rush Perennial grass 9
Juncus trilocularis Perennial grass  
Juncus xiphioides Iris leaved rush Perennial grass 15
Kelloggia galioides Kelloggia Perennial herb  
Koeleria macrantha June grass Perennial grass 29
Kopsiopsis strobilacea California ground-cone Perennial herb (parasitic)  
Kyhosia bolanderi Bolander's madia Perennial herb  
Lactuca tatarica Blue lettuce Perennial herb  
Lactuca tatarica ssp. pulchella Blue lettuce Perennial herb  
Lactuca tatarica var. pulchella Blue lettuce Perennial herb  
Lathyrus brownii Brown's brush pea Perennial herb  
Lathyrus delnorticus Del norte pea Perennial herb  
Lathyrus jepsonii Tule pea Perennial herb 1
Lathyrus jepsonii var. californicus California tule pea Perennial herb 1
Lathyrus lanszwertii Nevada pea Perennial herb  
Lathyrus lanszwertii var. aridus Dryland nevada pea Perennial herb  
Lathyrus lanszwertii var. lanszwertii Nevada pea Perennial herb  
Lathyrus lanszwertii var. tracyi Tracy's nevada pea Perennial herb  
Lathyrus nevadensis Sierra pea Perennial herb  
Lathyrus nevadensis ssp. lanceolatus Sierra pea Perennial herb  
Lathyrus nevadensis ssp. nevadensis Sierra pea Perennial herb  
Lathyrus nevadensis var. nevadensis Sierra nevada pea Perennial herb  
Lathyrus polyphyllus Oregon pea Perennial herb  
Lathyrus sulphureus Sulpher pea Perennial herb  
Lathyrus torreyi Redwood pea Perennial herb  
Lathyrus vestitus Common pacific pea Perennial herb 7
Leersia oryzoides Rice cutgrass Perennial grass 2
Lemna gibba Gibbous duckweed Perennial herb  
Lemna minor Smaller duckweed Perennial herb 3
Lemna minuscula Least duckweed Perennial herb  
Lemna minuta Least duckweed Perennial herb  
Lemna turionifera Turion duckweed Perennial herb  
Lepidium montanum Mountain pepper grass Perennial herb 1
Lepidium montanum var. canescens Mountain pepper grass Perennial herb 1
Leptosiphon nuttallii Nuttall's linanthus Perennial herb 2
Leptosiphon nuttallii ssp. nuttallii Nuttall's linanthus Perennial herb 2
Lesquerella occidentalis ssp. occidentalis Western bladder pod Perennial herb  
Leucocrinum montanum Sand lily Perennial herb  
Lewisia Xwhiteae Perennial herb  
Lewisia cotyledon Cliff lewisia Perennial herb 20
Lewisia cotyledon var. cotyledon Cliff lewisia Perennial herb 2
Lewisia cotyledon var. heckneri Heckner's lewisia Perennial herb  
Lewisia cotyledon var. howellii Howell's lewisia Perennial herb  
Lewisia kelloggii Kellogg's lewisia Perennial herb  
Lewisia kelloggii ssp. hutchisonii Sierra valley lewisia Perennial herb  
Lewisia kelloggii ssp. kelloggii Kellogg's lewisia Perennial herb  
Lewisia leana Quill leaved lewisia Perennial herb 2
Lewisia leeana Quill leaf lewisia Perennial herb 2
Lewisia nevadensis Sierra lewisia Perennial herb 2
Lewisia pygmaea Pigmy bitter root Perennial herb 3
Lewisia rediviva Bitter root Perennial herb 4
Lewisia rediviva var. rediviva Bitter root Perennial herb  
Lewisia triphylla Three leaved lewisia Perennial herb  
Leymus cinereus Giant wild rye Perennial grass 8
Leymus condensatus Giant rye grass Perennial grass 34
Leymus triticoides Alkali rye Perennial grass 30
Ligusticum apiifolium Celery leaved lovage Perennial herb 2
Ligusticum californicum California lovage Perennial herb  
Ligusticum grayi Gray's lovage Perennial herb  
Lilaeopsis occidentalis Lilaeopsis Perennial herb  
Lilium bolanderi Bolander's lily Perennial herb (bulb) 2
Lilium columbianum Columbia lily Perennial herb 13
Lilium kelleyanum Kelley's lily Perennial herb  
Lilium occidentale Western lily Perennial herb (bulb)  
Lilium pardalinum California tiger lily Perennial herb 23
Lilium pardalinum ssp. pardalinum Leopard lily Perennial herb 3
Lilium pardalinum ssp. shastense Shasta lily Perennial herb 1
Lilium pardalinum ssp. vollmeri Vollmer's lily Perennial herb (bulb) 2
Lilium pardalinum ssp. wigginsii Wiggins' lily Perennial herb (bulb) 2
Lilium parvum Sierra tiger lily Perennial herb 4
Lilium rubescens Chaparral lily Perennial herb (bulb) 2
Lilium washingtonianum Washington lily Perennial herb 6
Lilium washingtonianum ssp. purpurascens Purple flowered washington lily Perennial herb (bulb)  
Lilium washingtonianum ssp. washingtonianum Typical washington lily Perennial herb 1
Linanthus nuttallii Nuttall's linanthus Perennial herb 2
Linanthus nuttallii ssp. nuttallii Nuttall's linanthus Perennial herb  
Linnaea borealis Twinflower Perennial herb 8
Linnaea borealis ssp. americana Twinflower Perennial herb 2
Linnaea borealis var. longiflora Twin flower Perennial herb 2
Linum lewisii Lewis' flax Perennial herb 38
Linum lewisii var. alpicola Alpine lewis' flax Perennial herb 1
Linum lewisii var. lewisii Lewis' flax Perennial herb 5
Listera banksiana Northwest twayblade Perennial herb  
Listera caurina Northwest twayblade Perennial herb  
Listera convallarioides Broad lipped twayblade Perennial herb  
Listera cordata Heart leaved twayblade Perennial herb  
Lithophragma affine Common woodland star Perennial herb 1
Lithophragma campanulatum Siskiyou mountain woodland star Perennial herb  
Lithophragma glabrum Bulbed woodland star Perennial herb  
Lithophragma heterophyllum Woodland star Perennial herb 1
Lithophragma parviflorum Pink woodland star Perennial herb 1
Lithophragma tenellum Woodland star Perennial herb  
Lithospermum californicum California gromwell Perennial herb  
Lithospermum ruderale Western gromwell Perennial herb  
Lomatium austiniae Plummer's lomatium Perennial herb  
Lomatium bicolor Wasatch desertparsley Perennial herb  
Lomatium bicolor var. leptocarpum Slender fruited lomatium Perennial herb  
Lomatium californicum Celery weed Perennial herb 4
Lomatium ciliolatum Yolla bolly lomatium Perennial herb  
Lomatium dasycarpum Lace parsnip Perennial herb 4
Lomatium dasycarpum ssp. dasycarpum Woolly fruited lomatium Perennial herb  
Lomatium dasycarpum ssp. tomentosum Woolly fruited lomatium Perennial herb  
Lomatium dissectum Fern leaved lomatium Perennial herb 3
Lomatium dissectum var. dissectum Fern leaved lomatium Perennial herb 1
Lomatium dissectum var. multifidum Fern leaved lomatium Perennial herb 1
Lomatium donnellii Donnell's biscuitroot Perennial herb  
Lomatium engelmannii Engelmann's lomatium Perennial herb  
Lomatium fusiformis California indian potato Perennial herb  
Lomatium howellii Howell's lomatium Perennial herb  
Lomatium macrocarpum Large fruited lomatium Perennial herb 2
Lomatium marginatum Hartweg's lomatium Perennial herb  
Lomatium martindalei Coast range lomatium Perennial herb  
Lomatium multifidum Fern leaved lomatium Perennial herb 1
Lomatium nevadense Nevada lomatium Perennial herb  
Lomatium nevadense var. nevadense Nevada lomatium Perennial herb  
Lomatium nevadense var. parishii Parish's lomatium Perennial herb  
Lomatium nudicaule Pestle lomatium Perennial herb 3
Lomatium peckianum Peck's lomatium Perennial herb  
Lomatium piperi Piper's lomatium Perennial herb  
Lomatium plummerae Plummer's lomatium Perennial herb  
Lomatium tracyi Tracy's lomatium Perennial herb  
Lomatium triternatum Lewis's lomatium Perennial herb 1
Lomatium triternatum var. macrocarpum Large fruited lewis' lomatium Perennial herb  
Lomatium triternatum var. triternatum Lewis' lomatium Perennial herb  
Lomatium utriculatum Hog fennel Perennial herb 2
Lomatium vaginatum Sheathed lomatium Perennial herb  
Lotus crassifolius Broad leaved lotus Perennial herb 7
Lotus crassifolius var. crassifolius Broad leaved lotus Perennial herb 2
Lotus nevadensis Sierra lotus Perennial herb  
Lotus nevadensis var. nevadensis Sierra nevada lotus Perennial herb  
Lotus oblongifolius Narrow leaved lotus Perennial herb  
Lotus oblongifolius var. oblongifolius Narrow leaved lotus Perennial herb 1
Lotus pinnatus Pinnate lotus Perennial herb  
Lotus stipularis Stipulate lotus Perennial herb  
Lotus stipularis var. ottleyi Ottley's stipulate lotus Perennial herb  
Ludwigia palustris Marsh purslane Perennial herb (aquatic)  
Luina hypoleuca Little leaf luina Perennial herb  
Lupinus adsurgens Drew's silky lupine Perennial herb  
Lupinus adsurgens var. adsurgens Drew's silky lupine Perennial herb  
Lupinus adsurgens var. undulatus Drew's silky lupine Perennial herb  
Lupinus albicaulis White stemmed lupine Perennial herb 8
Lupinus albicaulis var. albicaulis Sicklekeel lupine Perennial herb  
Lupinus albicaulis var. shastensis Shasta lupine Perennial herb  
Lupinus andersonii Anderson's lupine Perennial herb  
Lupinus angustiflorus Narrow flowered lupine Perennial herb  
Lupinus arbustus Long spurred lupine Perennial herb  
Lupinus argenteus Silvery lupine Perennial herb 7
Lupinus argenteus var. argenteus Silvery lupine Perennial herb  
Lupinus argenteus var. heteranthus Silvery lupine Perennial herb 3
Lupinus argenteus var. palmeri Palmer's silver lupine Perennial herb  
Lupinus breweri Brewer's lupine Perennial herb 2
Lupinus breweri var. breweri Brewer's lupine Perennial herb  
Lupinus croceus Mt. eddy lupine Perennial herb 1
Lupinus croceus var. croceus Saffron flowered lupine Perennial herb  
Lupinus croceus var. pilosellus Saffron flowered lupine Perennial herb  
Lupinus dalesiae Quincy lupine Perennial herb  
Lupinus elmeri Elmer's lupine Perennial herb  
Lupinus grayi Gray's lupine Perennial herb 3
Lupinus lapidicola Mt. Eddy lupine Perennial herb  
Lupinus latifolius Broad leaf lupine Perennial herb 9
Lupinus latifolius var. barbatus Hair tuft lupine Perennial herb  
Lupinus latifolius var. columbianus Broad leaved lupine Perennial herb  
Lupinus latifolius var. latifolius Broad leaf lupine Perennial herb  
Lupinus latifolius var. viridifolius Green leaf lupine Perennial herb  
Lupinus lepidus Tidy lupine Perennial herb 1
Lupinus lepidus var. confertus Clustered tidy lupine Perennial herb  
Lupinus lepidus var. lobbii Lobb's lupine Perennial herb  
Lupinus lepidus var. sellulus Stool lupine Perennial herb  
Lupinus leucophyllus Velvet lupine Perennial herb  
Lupinus obtusilobus Satin lupine Perennial herb  
Lupinus onustus Northern lupine Perennial herb 1
Lupinus polyphyllus Bog lupine Perennial herb 26
Lupinus polyphyllus var. burkei Large leaved lupine Perennial herb 5
Lupinus polyphyllus var. pallidipes Pale meadow lupine Perennial herb  
Lupinus polyphyllus var. polyphyllus Meadow lupine Perennial herb 1
Lupinus rivularis Riverbank lupine Perennial herb 8
Lupinus tracyi Tracy's lupine Perennial herb  
Luzula comosa Hairy wood rush Perennial grass 4
Luzula comosa var. laxa Hairy wood rush Perennial grass 3
Luzula divaricata Forked wood rush Perennial grass  
Luzula parviflora Small flowered wood rush Perennial grass 2
Luzula parviflora ssp. fastigiata Forked wood rush Perennial grass  
Luzula parviflora ssp. parviflora Small flowered wood rush Perennial grass  
Luzula piperi Piper's woodrush Perennial grass 1
Luzula spicata Spiked wood rush Perennial grass  
Luzula subcongesta Donner wood rush Perennial grass  
Luzula subsessilis Pacific woodrush Perennial grass 3
Lycopus americanus Bugleweed Perennial herb 2
Lycopus uniflorus Northern bugleweed Perennial herb  
Lysichiton americanus Yellow skunk cabbage Perennial herb 8
Lysimachia latifolia Pacific starflower Perennial herb 2
Lythrum californicum Common loosestrife Perennial herb  
Machaeranthera canescens Hoary aster Perennial herb 1
Machaeranthera canescens var. canescens Hoary aster Perennial herb  
Machaeranthera canescens var. shastensis Shasta aster Perennial herb  
Madia bolanderi Bolander's tarweed Perennial herb  
Madia madioides Forest madia Perennial herb 1
Maianthemum racemosum Feathery false lily of the valley Perennial herb 19
Maianthemum racemosum ssp. amplexicaule Feathery false lily of the valley Perennial herb 3
Maianthemum stellatum Starry false lily of the valley Perennial herb 17
Malvella leprosa Alkali mallow Perennial herb 3
Marah oregana Coast man-root Perennial herb, Vine 3
Marah oreganus Manroot Perennial herb, Vine 3
Melica aristata Awned melic Perennial grass 1
Melica bulbosa Oniongrass Perennial grass 1
Melica californica California melic Perennial grass 25
Melica fugax Small onion grass Perennial grass  
Melica geyeri Geyer's onion grass Perennial grass  
Melica harfordii Harford's melic Perennial grass 2
Melica spectabilis Purple onion grass Perennial grass (rhizomatous)  
Melica stricta Nodding melica Perennial grass  
Melica subulata Alaska melic Perennial grass 1
Melica torreyana Torrey's melica Perennial grass 13
Mentha arvensis American wild mint Perennial herb 6
Mentha canadensis Wild mint Perennial herb 6
Mentzelia laevicaulis Giant blazingstar Perennial herb 5
Menyanthes trifoliata Bogbean Perennial herb 2
Mertensia bella Oregon lungwort Perennial herb  
Mertensia oblongifolia Sagebrush bluebells Perennial herb  
Mertensia oblongifolia var. amoena Sagebrush bluebells Perennial herb  
Micranthes aprica Sierra saxifrage Perennial herb  
Micranthes californica Greene's saxifrage Perennial herb  
Micranthes ferruginea Rusty hair saxifrage Perennial herb  
Micranthes fragosa Perennial herb  
Micranthes howellii Howell's saxifrage Perennial herb  
Micranthes integrifolia Smooth leaf saxifrage Perennial herb  
Micranthes marshallii Marshall's saxifrage Perennial herb  
Micranthes nidifica Peak saxifrage Perennial herb  
Micranthes odontoloma Brook saxifrage Perennial herb 1
Micranthes oregana Bog saxifrage Perennial herb  
Micranthes tolmiei Tolmie's saxifrage Perennial herb  
Microseris borealis Northern microseris Perennial herb  
Microseris laciniata Cut leaved scorzonella Perennial herb  
Microseris laciniata ssp. detlingii Detling's silverpuffs Perennial herb  
Microseris laciniata ssp. laciniata Cut leaved scorzonella Perennial herb  
Microseris laciniata ssp. siskiyouensis Siskiyou microseris Perennial herb  
Microseris nutans Nodding microceris Perennial herb  
Mimulus cardinalis Cardinal monkey flower Perennial herb 41
Mimulus lewisii Lewis' monkey flower Perennial herb 12
Mimulus moschatus Musk monkeyflower Perennial herb 1
Mimulus moschatus var. sessilifolius Muskflower Perennial herb  
Mimulus primuloides Primrose monkeyflower Perennial herb 3
Mimulus primuloides ssp. linearifolius Primrose monkeyflower Perennial herb 3
Mimulus primuloides ssp. primuloides Primrose monkeyflower Perennial herb  
Mimulus primuloides var. linearifolius Primrose monkeyflower Perennial herb 3
Mimulus primuloides var. pilosellus Primrose monkeyflower Perennial herb  
Mimulus primuloides var. primuloides Primrose monkeyflower Perennial herb  
Mimulus tilingii Larger mountain monkeyflower Perennial herb 3
Minuartia howellii Howell's sandwort Perennial herb  
Minuartia nuttallii Nuttall sandwort Perennial herb  
Minuartia nuttallii ssp. fragilis Brittle sandwort Perennial herb  
Minuartia nuttallii ssp. gracilis Nuttall's sandwort Perennial herb  
Minuartia nuttallii ssp. gregaria Gregarious sandwort Perennial herb  
Minuartia nuttallii var. fragilis Nuttall sandwort Perennial herb  
Minuartia nuttallii var. gracilis Nuttall sandwort Perennial herb  
Minuartia nuttallii var. gregaria Nuttall sandwort Perennial herb  
Minuartia rubella Red seeded sandwort Perennial herb 1
Minuartia stolonifera Scott mtn. sandwort Perennial herb  
Mirabilis greenei Greene's four o'clock Perennial herb  
Mitella breweri Brewer's miterwort Perennial herb  
Mitella caulescens Stemmed miterwort Perennial herb  
Mitella diversifolia Angle leafed miterwort Perennial herb  
Mitella pentandra Alpine bishop's cap Perennial herb 1
Mitella trifida Three parted miterwort Perennial herb  
Mitellastra caulescens Leafy-stemmed mitrewort Perennial herb  
Moehringia macrophylla Large leaved sandwort Perennial herb  
Monardella antonina San antonio hills monardella Perennial herb (rhizomatous) 5
Monardella antonina ssp. antonina San antonio hills monardella Perennial herb (rhizomatous) 4
Monardella antonina ssp. benitensis San Benito monardella Perennial herb (rhizomatous) 3
Monardella glauca Grey monardella Perennial herb 1
Monardella odoratissima Mountain monardella Perennial herb 21
Monardella odoratissima ssp. glauca Mountain mint Perennial herb 1
Monardella odoratissima ssp. odoratissima Mountain monardella Perennial herb  
Monardella odoratissima ssp. pallida Pale mountain monardella Perennial herb  
Monardella odoratissima ssp. parvifolia Matted mountain monardella Perennial herb  
Monardella purpurea Siskiyou monardella Perennial herb 4
Monardella sheltonii Shelton's coyote mint Perennial herb 1
Monardella siskiyouensis Siskiyou coyote mint Perennial herb 3
Monardella villosa Coyote mint Perennial herb 27
Monardella villosa ssp. globosa Robust monardella Perennial herb (rhizomatous) 3
Monardella villosa ssp. villosa Coyote mint Perennial herb 5
Monardella villosa var. subglabra Coyote mint Perennial herb 3
Moneses uniflora Woodnymph Perennial herb  
Monotropa hypopitys Pinesap Perennial herb (mycoparasitic)  
Montia chamissoi Spring beauty Perennial herb  
Montia parvifolia Showy rock montia Perennial herb 4
Muhlenbergia andina Foxtail muhly Perennial grass  
Muhlenbergia asperifolia Scratchgrass Perennial grass 1
Muhlenbergia jonesii Jones' muhly Perennial grass  
Muhlenbergia montana Mountain muhly Perennial grass 3
Muhlenbergia richardsonis Richardson's muhly Perennial grass  
Muilla transmontana Great basin muilla Perennial herb  
Myosotis laxa Forget me not Perennial herb  
Myriophyllum sibiricum Siberian water milfoil Perennial herb (aquatic)  
Nama lobbii Lobb's nama Perennial herb 1
Narthecium californicum California bog asphodel Perennial herb  
Nasturtium officinale Watercress Perennial herb (aquatic) 3
Nitrophila occidentalis Western nitrophila Perennial herb  
Noccaea fendleri Pennycress Perennial herb  
Noccaea fendleri ssp. glauca Pennycress Perennial herb 1
Nothocalais alpestris Alpine prairie dandelion Perennial herb  
Nothocalais troximoides False agoseris Perennial herb  
Nothochelone nemorosa False turtlehead Perennial herb 1
Nuphar polysepala Rocky mountain pond-lily Perennial herb (aquatic) 3
Oenothera caespitosa Fragrant evening primrose Perennial herb 8
Oenothera caespitosa ssp. marginata Large white desert primrose Perennial herb  
Oenothera cespitosa Fragrant evening-primrose Perennial herb 8
Oenothera cespitosa ssp. marginata Fragrant evening-primrose Perennial herb  
Oenothera elata Evening primrose Perennial herb 16
Oenothera elata ssp. hirsutissima Evening primrose Perennial herb 3
Oenothera elata ssp. hookeri Evening primrose Perennial herb 18
Oenothera flava Yellow evening primrose Perennial herb  
Oenothera flava ssp. flava Dandelion evening primrose Perennial herb  
Oenothera villosa Hairy evening primrose Perennial herb  
Oenothera villosa ssp. strigosa Hairy evening primrose Perennial herb 20
Oenothera wolfii Wolf's evening primrose Perennial herb  
Olsynium douglasii Douglas' grasswidow Perennial herb 4
Olsynium douglasii var. douglasii Douglas' grasswidow Perennial herb 4
Oreocarya schoolcraftii Schoolcraft's cryptantha Perennial herb  
Oreostemma alpigenum Tundra aster Perennial herb 3
Oreostemma alpigenum var. andersonii Tundra aster Perennial herb 1
Oreostemma elatum Plumas alpine aster Perennial herb  
Orobanche bulbosa Chaparral broomrape Perennial herb (parasitic)  
Orobanche californica California orobanche Perennial herb (parasitic)  
Orobanche californica ssp. grayana Gray's california broom rape Perennial herb (parasitic)  
Orobanche fasciculata Clustered broomrape Perennial herb (parasitic)  
Orobanche pinorum Pinewoods broom rape Perennial herb (parasitic)  
Orobanche uniflora Naked broom rape Perennial herb (parasitic)  
Orobanche uniflora var. purpurea Naked broom rape Perennial herb (parasitic)  
Orogenia fusiformis California indian potato Perennial herb  
Orthilia secunda One sided wintergreen Perennial herb  
Oryzopsis exigua Little ricegrass Perennial grass  
Osmorhiza berteroi Sweet cicely Perennial herb 3
Osmorhiza chilensis Western sweet cicely Perennial herb 3
Osmorhiza depauperata Little sweet cicely Perennial herb  
Osmorhiza occidentalis Western sweet cicely Perennial herb 2
Osmorhiza purpurea Purple sweet cicely Perennial herb  
Oxalis trilliifolia Three leaf woodsorrel Perennial herb  
Oxypolis occidentalis Western cow bane Perennial herb  
Oxyria digyna Alpine mountain sorrel Perennial herb  
Ozomelis diversifolia Angle leafed miterwort Perennial herb  
Ozomelis trifida Three parted miterwort Perennial herb  
Packera cana Woolly groundsel Perennial herb  
Packera clevelandii Cleveland's ragwort Perennial herb  
Packera macounii Siskiyou mountain ragwort Perennial herb  
Packera streptanthifolia Rocky mountain groundsel Perennial herb  
Packera streptanthifolia var. streptanthifolia Rocky mountain groundsel Perennial herb  
Paeonia brownii Peony Perennial herb 1
Paeonia californica California peony Perennial herb 1
Panicum acuminatum Western witch grass Perennial grass  
Panicum acuminatum var. fasciculatum Pacific panic grass Perennial grass  
Panicum acuminatum var. lindheimeri Lindheimer panicgrass Perennial grass  
Parnassia californica Grass of parnassus Perennial herb  
Parnassia cirrata San bernardino grass of parnassus Perennial herb  
Parnassia cirrata var. cirrata San bernardino grass of parnassus Perennial herb  
Parnassia cirrata var. intermedia Cascade grass of parnassus Perennial herb  
Parnassia fimbriata Rocky mountain parnassia Perennial herb  
Parnassia palustris Marsh grass of parnassus Perennial herb  
Pascopyrum smithii Western wheat grass Perennial grass 4
Paspalum distichum Knot grass Perennial grass 2
Pectiantia breweri Brewer's miterwort Perennial herb  
Pectiantia pentandra Alpine mitrewort Perennial herb 1
Pedicularis attollens Attol lousewort Perennial herb  
Pedicularis bracteosa Bracted lousewort Perennial herb  
Pedicularis bracteosa var. flavida Yellowish lousewort Perennial herb  
Pedicularis contorta Curved beak lousewort Perennial herb  
Pedicularis densiflora Indian warrior Perennial herb 1
Pedicularis groenlandica Elephant head lousewort Perennial herb 2
Pedicularis howellii Howell's lousewort Perennial herb  
Pedicularis racemosa Leafy lousewort Perennial herb  
Pedicularis racemosa ssp. racemosa Sickletop lousewort Perennial herb  
Pedicularis semibarbata Pine woods lousewort Perennial herb  
Penstemon anguineus Siskiyou beardtongue Perennial herb 1
Penstemon azureus Blue penstemon Perennial herb 12
Penstemon azureus var. angustissimus Azure penstemon Perennial herb 4
Penstemon azureus var. azureus Azure penstemon Perennial herb 2
Penstemon cinereus Gray beardtongue Perennial herb  
Penstemon cinicola Ash beardtongue Perennial herb  
Penstemon davidsonii Davidson's penstemon Perennial herb 8
Penstemon davidsonii var. davidsonii Davidson's beardtongue Perennial herb 2
Penstemon deustus Rock penstemon Perennial herb 2
Penstemon deustus var. deustus Scabland penstemon Perennial herb  
Penstemon deustus var. pedicellatus Hot rock beardtongue Perennial herb  
Penstemon deustus var. suffrutescens Hot rock beardtongue Perennial herb  
Penstemon filiformis Thread leaved beardtongue Perennial herb  
Penstemon gracilentus Slender beardtongue Perennial herb 1
Penstemon heterodoxus Sierra penstemon Perennial herb  
Penstemon heterodoxus var. cephalophorus Sierra beardtongue Perennial herb  
Penstemon heterodoxus var. shastensis Shasta beardtongue Perennial herb  
Penstemon heterophyllus Foothill penstemon Perennial herb 40
Penstemon heterophyllus var. heterophyllus Foothill penstemon Perennial herb 1
Penstemon heterophyllus var. purdyi Purdy's foothill penstemon Perennial herb 1
Penstemon humilis Low beardtongue Perennial herb  
Penstemon humilis ssp. humilis Low beardtongue Perennial herb  
Penstemon humilis var. humilis Low beardtongue Perennial herb  
Penstemon laetus Mountain blue penstemon Perennial herb 1
Penstemon laetus var. laetus Mountain blue penstemon Perennial herb  
Penstemon laetus var. sagittatus Mountain blue penstemon Perennial herb  
Penstemon neotericus Derived penstemon Perennial herb 1
Penstemon newberryi Mountain pride Perennial herb 15
Penstemon newberryi var. berryi Berry's mountain pride Perennial herb  
Penstemon newberryi var. newberryi Newberry's penstemon Perennial herb 1
Penstemon newberryi var. sonomensis Sonoma beardtongue Perennial herb 4
Penstemon parvulus Short stalk penstemon Perennial herb 1
Penstemon procerus Small flowered penstemon Perennial herb 7
Penstemon procerus var. brachyanthus Small flowered penstemon Perennial herb 1
Penstemon procerus var. formosus Western small flowered penstemon Perennial herb 3
Penstemon purpusii Snow mtn. beardtongue Perennial herb 1
Penstemon roezlii Regel's mountain penstemon Perennial herb 1
Penstemon rupicola Rock penstemon Perennial herb 4
Penstemon rydbergii Rydberg's penstemon Perennial herb 23
Penstemon rydbergii var. oreocharis Meadow beardtongue Perennial herb 1
Penstemon speciosus Showy penstemon Perennial herb 13
Penstemon spectabilis Showy penstemon Perennial herb 25
Penstemon tracyi Tracy's beardtongue Perennial herb  
Perideridia bolanderi Bolander's yampah Perennial herb 2
Perideridia bolanderi ssp. bolanderi Bolander's yampah Perennial herb  
Perideridia gairdneri Gairdner's yampah Perennial herb 2
Perideridia gairdneri ssp. borealis Northern gairdner's yampah Perennial herb  
Perideridia gairdneri ssp. gairdneri Gairdner's yampah Perennial herb  
Perideridia howellii Howell's yampah Perennial herb  
Perideridia lemmonii Lemmon's yampah Perennial herb  
Perideridia leptocarpa Narrow seeded yampah Perennial herb  
Perideridia oregana Oregon yampah Perennial herb 1
Perideridia parishii Parish's yampah Perennial herb  
Perideridia parishii ssp. latifolia Parish's yampah Perennial herb  
Persicaria amphibia Water smartweed Perennial herb (aquatic) 2
Persicaria hydropiperoides Water pepper Perennial herb  
Petasites frigidus Arctic sweet coltsfoot Perennial herb 3
Petasites frigidus var. palmatus Western coltsfoot Perennial herb 10
Phacelia bolanderi Bolander's phacelia Perennial herb 13
Phacelia californica Rock phacelia Perennial herb 17
Phacelia corymbosa Serpentine phacelia Perennial herb  
Phacelia dalesiana Scott mtn. phacelia Perennial herb  
Phacelia egena Rock phacelia Perennial herb 3
Phacelia hastata White leafed phacelia Perennial herb  
Phacelia hastata ssp. compacta Timberline phacelia Perennial herb  
Phacelia hastata ssp. hastata Mountain phacelia Perennial herb  
Phacelia hastata var. compacta Timberline phacelia Perennial herb  
Phacelia hastata var. hastata Mountain phacelia Perennial herb  
Phacelia heterophylla Varileaf phacelia Perennial herb 1
Phacelia heterophylla ssp. virgata Varied leaf phacelia Perennial herb  
Phacelia heterophylla var. virgata Varied leaf phacelia Perennial herb  
Phacelia imbricata Imbricate phacelia Perennial herb 3
Phacelia mutabilis Changeable phacelia Perennial herb  
Phacelia nemoralis Woods phacelia Perennial herb  
Phacelia nemoralis ssp. oregonensis Oregon woods phacelia Perennial herb  
Phacelia nemoralis var. oregonensis Oregon woods phacelia Perennial herb  
Phacelia procera Tall phacelia Perennial herb  
Phacelia ramosissima Branching phacelia Perennial herb 3
Phacelia ramosissima var. eremophila Branching phacelia Perennial herb 3
Phacelia ramosissima var. ramosissima Branching phacelia Perennial herb  
Phacelia sericea Silky phacelia Perennial herb 2
Phacelia sericea ssp. ciliosa Silky phacelia Perennial herb  
Phacelia sericea var. ciliosa Blue alpine phacelia Perennial herb  
Phalaris arundinacea Reed canarygrass Perennial grass 8
Phleum alpinum Timothy grass Perennial grass 2
Phlox adsurgens Northern phlox Perennial herb 3
Phlox austromontana Southern mountain phlox Perennial herb  
Phlox caespitosa Tufted phlox Perennial herb  
Phlox diffusa Spreading phlox Perennial herb 3
Phlox dispersa High sierra phlox Perennial herb  
Phlox douglasii Douglas' phlox Perennial herb 1
Phlox douglasii ssp. rigida Stiff douglas' phlox Perennial herb 1
Phlox hirsuta Yreka phlox Perennial herb  
Phlox hoodii Spiny phlox Perennial herb  
Phlox hoodii ssp. canescens Hood's phlox Perennial herb  
Phlox hoodii ssp. lanata Carpet phlox Perennial herb  
Phlox hoodii ssp. muscoides Musk phlox Perennial herb  
Phlox muscoides Moss phlox Perennial herb 2
Phlox pulvinata Carpet phlox Perennial herb 1
Phlox speciosa Showy phlox Perennial herb  
Phlox speciosa ssp. nitida Showy phlox Perennial herb  
Phlox speciosa ssp. occidentalis Western showy phlox Perennial herb  
Phoenicaulis cheiranthoides Dagger pod Perennial herb 1
Phoradendron densum Dense mistletoe Perennial herb  
Phoradendron pauciflorum Fir mistletoe Perennial herb  
Phragmites australis Common reed Perennial grass 1
Physaria occidentalis Western bladderpod Perennial herb  
Physaria occidentalis ssp. occidentalis Western bladder pod Perennial herb  
Pinguicula macroceras California butterwort Perennial herb (carnivorous)  
Pinguicula macroceras var. macroceras California butterwort Perennial herb (carnivorous)  
Pinguicula vulgaris ssp. macroceras Horned butterwort Perennial herb (carnivorous)  
Piperia candida White flowered rein orchid Perennial herb  
Piperia colemanii Coleman's piperia Perennial herb  
Piperia elegans Rein orchid Perennial herb  
Piperia elegans ssp. elegans Elegant piperia Perennial herb  
Piperia elongata Dense flowered rein orchid Perennial herb  
Piperia leptopetala Rein orchid Perennial herb  
Piperia transversa Mountain piperia Perennial herb  
Piperia unalascensis Alaska piperia Perennial herb  
Piptatherum exiguum Little ricegrass Perennial grass  
Pityopus californica Pityopus Perennial herb (mycoparasitic)  
Pityopus californicus Perennial herb (mycoparasitic)  
Plagiobothrys mollis Downy popcorn flower Perennial herb  
Plantago eriopoda Hairy fruited plantain Perennial herb  
Platanthera dilatata Scentbottle Perennial herb  
Platanthera dilatata var. leucostachys Sierra bog orchid Perennial herb  
Platanthera hyperborea Green flowered bog orchid Perennial herb  
Platanthera leucostachys White flowered bog orchid Perennial herb  
Platanthera sparsiflora Bog orchid Perennial herb  
Platanthera stricta Slender bog orchid Perennial herb  
Platanthera tescamnis Green flowered bog orchid Perennial herb  
Pleiacanthus spinosus Thorn skeletonweed Perennial herb  
Pleuricospora fimbriolata Fringed pinesap Perennial herb (mycoparasitic)  
Poa ampla Western blue grass Perennial grass 14
Poa cusickii Cusick's bluegrass Perennial grass  
Poa cusickii ssp. cusickii Cusick's blue grass Perennial grass  
Poa cusickii ssp. epilis Skyline bluegrass Perennial grass  
Poa cusickii ssp. purpurascens Purple blue grass Perennial grass  
Poa fendleriana Muttongrass Perennial grass 4
Poa glauca Glaucous bluegrass Perennial grass  
Poa glauca ssp. rupicola Timberline blue grass Perennial grass  
Poa juncifolia Western blue grass Perennial grass 13
Poa nevadensis Sierra blue grass Perennial grass 13
Poa piperi Piper's blue grass Perennial grass (rhizomatous)  
Poa pratensis ssp. agassizensis Agassiz kentucky blue grass Perennial grass  
Poa pringlei Pringle's blue grass Perennial grass  
Poa rhizomata Timber blue grass Perennial grass (rhizomatous)  
Poa secunda Pine bluegrass Perennial grass 17
Poa secunda ssp. juncifolia Rush blue grass Perennial grass 13
Poa secunda ssp. secunda Sandberg's bluegrass Perennial grass 17
Poa wheeleri Hooker's bluegrass Perennial grass 1
Polemonium californicum California polemonium Perennial herb 2
Polemonium carneum Great polemonium Perennial herb 3
Polemonium chartaceum Mason's sky pilot Perennial herb  
Polemonium eddyense Mt. Eddy sky pilot Perennial herb  
Polemonium occidentale Great polemonium Perennial herb 3
Polemonium occidentale ssp. occidentale Western polemonium Perennial herb 2
Polemonium pulcherrimum Sky pilot Perennial herb 3
Polemonium pulcherrimum var. pilosum White flowered sky pilot Perennial herb  
Polemonium pulcherrimum var. pulcherrimum Sky pilot Perennial herb  
Polemonium pulcherrimum var. shastense Mt. shasta sky pilot Perennial herb  
Polyctenium fremontii Fremont's polyctenium Perennial herb  
Polyctenium fremontii var. fremontii Fremont's polyctenium Perennial herb  
Polyctenium williamsiae Williams's combleaf Perennial herb  
Polygala californica Milkwort Perennial herb  
Polygala cornuta Sierra milkwort Perennial herb  
Polygala cornuta var. cornuta Sierra milkwort Perennial herb  
Polygonum amphibium Water smartweed Perennial herb 2
Polygonum amphibium var. emersum Water smartweed Perennial herb (aquatic) 1
Polygonum amphibium var. stipulaceum Water smartweed Perennial herb 1
Polygonum bistortoides Western knotweed Perennial herb  
Polygonum davisiae Davis knotweed Perennial herb  
Polygonum hydropiperoides Water pepper Perennial herb  
Polygonum newberryi Newberry's smartweed Perennial herb  
Polygonum phytolaccifolium Pokeweed knotweed Perennial herb  
Polygonum shastense Shasta knotweed Perennial herb  
Potamogeton alpinus Alpine pondweed Perennial herb (aquatic)  
Potamogeton alpinus ssp. tenuifolius Alpine pondweed Perennial herb (aquatic)  
Potamogeton amplifolius Broad leaved pondweed Perennial herb (aquatic)  
Potamogeton berchtoldii Narrow leaved pondweed Perennial herb (aquatic)  
Potamogeton filiformis Slender leaved pondweed Perennial herb (rhizomatous)  
Potamogeton foliosus Leafy pondweed Perennial herb (aquatic)  
Potamogeton gramineus Grass leaf pondweed Perennial herb (aquatic)  
Potamogeton illinoensis Pondweed Perennial herb (aquatic)  
Potamogeton natans Floating leaved pondweed Perennial herb (aquatic)  
Potamogeton pectinatus Fennel pondweed Perennial herb (aquatic)  
Potamogeton pusillus Small pondweed Perennial herb (aquatic)  
Potamogeton pusillus var. tenuissimus Narrow leaved pondweed Perennial herb (aquatic)  
Potamogeton richardsonii Richardson's pondweed Perennial herb (aquatic)  
Potamogeton robbinsii Robbins's pondweed Perennial herb (rhizomatous)  
Potentilla anserina Silver weed cinquefoil Perennial herb 15
Potentilla anserina ssp. anserina Silver weed cinquefoil Perennial herb 2
Potentilla biennis Biennial cinquefoil Perennial herb 1
Potentilla breweri Brewer's cinquefoil Perennial herb 1
Potentilla bruceae Bruce's cinquefoil Perennial herb 1
Potentilla cristae Crested potentilla Perennial herb  
Potentilla drummondii Drummond's cinquefoil Perennial herb 2
Potentilla drummondii ssp. breweri Brewer's cinquefoil Perennial herb 1
Potentilla drummondii ssp. bruceae Bruce's cinquefoil Perennial herb 1
Potentilla flabellifolia Fan leaved cinquefoil Perennial herb  
Potentilla glandulosa Gland cinquefoil Perennial herb 12
Potentilla glandulosa ssp. ashlandica Mountain cinquefoil Perennial herb  
Potentilla glandulosa ssp. glandulosa Sticky cinquefoil Perennial herb  
Potentilla glandulosa ssp. globosa Common cinquefoil Perennial herb  
Potentilla glandulosa ssp. hansenii Hansen's cinquefoil Perennial herb  
Potentilla glandulosa ssp. nevadensis Nevada cinquefoil Perennial herb  
Potentilla glandulosa ssp. pseudorupestris False rock loving cinquefoil Perennial herb 1
Potentilla glandulosa ssp. reflexa Sticky cinquefoil Perennial herb  
Potentilla gracilis Northwest cinquefoil Perennial herb 15
Potentilla gracilis var. elmeri Elmer's cinquefoil Perennial herb 1
Potentilla gracilis var. fastigiata Slender cinquefoil Perennial herb  
Potentilla gracilis var. flabelliformis Cupform leaf cinquefoil Perennial herb  
Potentilla gracilis var. gracilis Slender cinquefoil Perennial herb  
Potentilla millefolia Cut leaf cinquefoil Perennial herb  
Potentilla millefolia var. klamathensis Cut leaf cinquefoil Perennial herb  
Potentilla newberryi Newberry's cinquefoil Perennial herb  
Primula conjugens Bonneville shooting star Perennial herb  
Primula hendersonii Mosquito bill Perennial herb 11
Primula jeffreyi Sierra shooting star Perennial herb 3
Primula suffrutescens Sierran primrose Perennial herb  
Primula tetrandra Alpine shooting star Perennial herb 2
Prosartes hookeri Drops of gold Perennial herb 11
Prosartes hookeri var. hookeri Drops of gold Perennial herb 6
Prosartes hookeri var. parvifolia Drops of gold Perennial herb  
Prosartes hookeri var. trachyandra Drops of gold Perennial herb 6
Prosartes parvifolia Siskiyou bells Perennial herb  
Prosartes smithii Largeflower fairybells Perennial herb 6
Prunella vulgaris Self heal Perennial herb 18
Prunella vulgaris var. lanceolata Mountain selfheal Perennial herb 8
Pseudognaphalium biolettii Two-color rabbit-tobacco Perennial herb 4
Pseudognaphalium canescens Wright's cudweed Perennial herb 2
Pseudognaphalium canescens ssp. canescens Wright's cudweed Perennial herb  
Pseudognaphalium canescens ssp. microcephalum Wright's cudweed Perennial herb  
Pseudognaphalium canescens ssp. thermale Wright's cudweed Perennial herb  
Pseudognaphalium microcephalum Wright's cudweed Perennial herb 3
Pseudognaphalium stramineum Cottonbatting plant Perennial herb 3
Pseudognaphalium thermale Small headed cudweed Perennial herb  
Pseudoroegneria spicata Bluebunch wheatgrass Perennial grass 4
Pseudoroegneria spicata ssp. spicata Bent grass Perennial grass 3
Pseudostellaria jamesiana Tubered starwort Perennial herb  
Pseudotrillium rivale Siskiyou wakerobin Perennial herb 1
Pterospora andromedea Pine drops Perennial herb (parasitic)  
Puccinellia californica Sierra nevada alkali grass Perennial grass (rhizomatous)  
Puccinellia lemmonii Lemmon's alkali grass Perennial grass  
Puccinellia nuttalliana Nuttall's alkali grass Perennial grass 1
Pycnanthemum californicum California mint Perennial herb 4
Pyrola aphylla Leafless wintergreen Perennial herb  
Pyrola asarifolia Bog wintergreen Perennial herb  
Pyrola asarifolia ssp. asarifolia Bog wintergreen Perennial herb  
Pyrola crypta Cryptic wintergreen Perennial herb  
Pyrola dentata Toothed wintergreen Perennial herb  
Pyrola minor Lesser wintergreen Perennial herb  
Pyrola picta White veined shinleaf Perennial herb  
Pyrrocoma carthamoides Largeflower goldenweed Perennial herb  
Pyrrocoma carthamoides var. cusickii Cusick's columbia pyrrocoma Perennial herb  
Pyrrocoma lanceolata Intermountain pyrrocoma Perennial herb  
Pyrrocoma lanceolata var. lanceolata Intermountain pyrrocoma Perennial herb  
Pyrrocoma racemosa Racemose pyrrocoma Perennial herb  
Pyrrocoma racemosa var. congesta Del norte pyrrocoma Perennial herb  
Pyrrocoma racemosa var. paniculata Panicled pyrrocoma Perennial herb  
Pyrrocoma racemosa var. pinetorum Pine pyrrocoma Perennial herb  
Pyrrocoma racemosa var. racemosa Racemose pyrrocoma Perennial herb  
Pyrrocoma uniflora var. uniflora Single headed pyrrocoma Perennial herb  
Raillardella argentea Silky raillardella Perennial herb  
Raillardella pringlei Showy raillardella Perennial herb (rhizomatous)  
Raillardiopsis scabrida Scabrid raillardella Perennial herb  
Ranunculus alismifolius Common water plantain buttercup Perennial herb  
Ranunculus alismifolius var. alismellus Slender buttercup Perennial herb  
Ranunculus alismifolius var. alismifolius Water plantain buttercup Perennial herb  
Ranunculus alismifolius var. hartwegii Common water plantain buttercup Perennial herb  
Ranunculus aquatilis white water butter cup Perennial herb (aquatic)  
Ranunculus aquatilis var. aquatilis White water butter cup Perennial herb (aquatic)  
Ranunculus aquatilis var. capillaceus Threadleaf crowfoot Perennial herb (aquatic)  
Ranunculus aquatilis var. diffusus white water butter cup Perennial herb (aquatic)  
Ranunculus aquatilis var. hispidulus White water crowfoot Perennial herb (aquatic)  
Ranunculus aquatilis var. subrigidus Longbeak buttercup Perennial herb (aquatic)  
Ranunculus californicus Common buttercup Perennial herb 12
Ranunculus cymbalaria Alkali buttercup Perennial herb  
Ranunculus cymbalaria var. saximontanus Rocky mountain buttercup Perennial herb  
Ranunculus eschscholtzii Eschscholtz's buttercup Perennial herb  
Ranunculus eschscholtzii var. eschscholtzii Eschscholtz's buttercup Perennial herb  
Ranunculus eschscholtzii var. suksdorfii Suksdorf's buttercup Perennial herb  
Ranunculus flammula Spearwort Perennial herb 1
Ranunculus flammula var. ovalis Greater creeping spearwort Perennial herb  
Ranunculus glaberrimus Smooth buttercup Perennial herb  
Ranunculus gormanii Gorman's buttercup Perennial herb  
Ranunculus longirostris Longbeak buttercup Perennial herb (aquatic)  
Ranunculus occidentalis Western buttercup Perennial herb 6
Ranunculus occidentalis var. dissectus Western buttercup Perennial herb  
Ranunculus occidentalis var. howellii Western buttercup Perennial herb  
Ranunculus occidentalis var. occidentalis Western buttercup Perennial herb  
Ranunculus occidentalis var. ultramontanus Western buttercup Perennial herb  
Ranunculus orthorhynchus Bloomer's buttercup Perennial herb  
Ranunculus orthorhynchus var. orthorhynchus Straight beaked buttercup Perennial herb  
Ranunculus populago Cusick's buttercup Perennial herb  
Rhodiola integrifolia Ledge stonecrop Perennial herb 1
Rhodiola integrifolia ssp. integrifolia Ledge stonecrop Perennial herb  
Romanzoffia californica California romanzoffia Perennial herb 4
Romanzoffia sitchensis Sitka romanzoffia Perennial herb 1
Rorippa columbiae Columbia yellow cress Perennial herb (rhizomatous)  
Rorippa nasturtium-aquaticum Water cress Perennial herb (aquatic) 3
Rudbeckia californica California cone flower Perennial herb 6
Rudbeckia californica var. glauca Serpentine cone flower Perennial herb  
Rudbeckia californica var. intermedia California cone flower Perennial herb  
Rudbeckia glaucescens Waxy coneflower Perennial herb  
Rudbeckia klamathensis Klamath coneflower Perennial herb  
Rudbeckia occidentalis Western coneflower Perennial herb 10
Rumex californicus California dock Perennial herb  
Rumex lacustris Lake dock Perennial herb (aquatic)  
Rumex occidentalis Western dock Perennial herb 1
Rumex salicifolius Willow leaved dock Perennial herb 6
Rumex salicifolius var. denticulatus Smooth valved willow dock Perennial herb  
Rumex salicifolius var. lacustris Lake dock Perennial herb (aquatic)  
Rumex salicifolius var. salicifolius Willow dock Perennial herb 6
Rumex salicifolius var. triangulivalvis Willow dock Perennial herb  
Rumex triangulivalvis Willow dock Perennial herb  
Rumex utahensis Toothed willow dock Perennial herb  
Sabulina howellii Howell's sandwort Perennial herb  
Sabulina stolonifera Scott Mountain sandwort Perennial herb  
Sagina procumbens Arctic pearlwort Perennial herb  
Sagina saginoides Alpine pearlwort Perennial herb  
Sagittaria cuneata Tule potato Perennial herb 1
Sagittaria longiloba Long lobed arrowhead Perennial herb (aquatic)  
Salvia sonomensis Sonoma sage Perennial herb 19
Sanicula bipinnatifida Purple sanicle Perennial herb  
Sanicula crassicaulis Pacific sanicle Perennial herb 2
Sanicula graveolens Sierra sanicle Perennial herb  
Sanicula tracyi Tracy's sanicle Perennial herb  
Sanicula tuberosa Turkey pea Perennial herb  
Sarcodes sanguinea Snow plant Perennial herb (mycoparasitic)  
Satureja douglasii Yerba buena Perennial herb 34
Saussurea americana American saw wort Perennial herb 1
Saxifraga aprica Sierra saxifrage Perennial herb  
Saxifraga californica Greene's saxifrage Perennial herb  
Saxifraga cespitosa Tufted saxifrage Perennial herb  
Saxifraga fallax California saxifrage Perennial herb  
Saxifraga ferruginea Rusty hair saxifrage Perennial herb  
Saxifraga ferruginea var. ferruginea Russethair saxifrage Perennial herb  
Saxifraga ferruginea var. macounii Rusty hair saxifrage Perennial herb  
Saxifraga howellii Howell's saxifrage Perennial herb (rhizomatous)  
Saxifraga integrifolia Smooth leaf saxifrage Perennial herb  
Saxifraga marshallii Marshall's saxifrage Perennial herb  
Saxifraga mertensiana Wood saxifrage Perennial herb  
Saxifraga nidifica Peak saxifrage Perennial herb  
Saxifraga nidifica var. nidifica Peak saifrage Perennial herb  
Saxifraga odontoloma Brook saxifrage Perennial herb 1
Saxifraga oregana Bog saxifrage Perennial herb  
Saxifraga rufidula Rusty saxifrage Perennial herb (rhizomatous)  
Saxifraga tolmiei Tolmie's saxifrage Perennial herb  
Saxifragopsis fragarioides Strawberry saxifrage Perennial herb  
Schoenoplectus acutus Hardstem bulrush Perennial grass 24
Schoenoplectus acutus var. occidentalis Tule Perennial grass 1
Schoenoplectus americanus Chairmaker's bulrush Perennial grass 17
Schoenoplectus pungens Common threesquare Perennial grass 2
Schoenoplectus tabernaemontani Softstem bulrush Perennial grass 12
Scirpus acutus var. occidentalis Hard stemmed tule Perennial grass 1
Scirpus americanus American tule Perennial grass 17
Scirpus congdonii Congdon's bulrush Perennial grass  
Scirpus maritimus Prairie bulrush Perennial grass 14
Scirpus microcarpus Small fruited bulrush Perennial grass 19
Scirpus nevadensis Great basin bulrush Perennial grass  
Scirpus pendulus Drooping bulrush Perennial grass  
Scirpus pungens Three square Perennial grass 2
Scirpus robustus Big bulrush Perennial grass 10
Scirpus tabernaemontani Mountain bulrush Perennial grass 4
Scrophularia californica California bee plant Perennial herb 30
Scrophularia californica ssp. floribunda Common california figwort Perennial herb 29
Scrophularia desertorum Desert figwort Perennial herb  
Scrophularia lanceolata Mountain figwort Perennial herb 1
Scutellaria antirrhinoides Snapdragon skullcap Perennial herb 2
Scutellaria galericulata Marsh skullcap Perennial herb (rhizomatous)  
Scutellaria nana Little skullcap Perennial herb (rhizomatous)  
Scutellaria siphocampyloides Gray leaved skullcap Perennial herb 5
Scutellaria tuberosa Danny's scullcap Perennial herb 1
Sedum divergens Cascade stonecrop Perennial herb 13
Sedum kiersteadiae The Eddys stonecrop Perennial herb  
Sedum lanceolatum Lance leaf stonecrop Perennial herb 4
Sedum laxum Rose flowered stonecrop Perennial herb 4
Sedum laxum ssp. flavidum Pale yellow stonecrop Perennial herb  
Sedum laxum ssp. heckneri Heckner's stonecrop Perennial herb 2
Sedum laxum ssp. laxum Rose flowered stonecrop Perennial herb 2
Sedum oblanceolatum Applegate stonecrop Perennial herb 2
Sedum obtusatum Sierra stonecrop Perennial herb 7
Sedum obtusatum ssp. boreale Small flowered sierra stonecrop Perennial herb 1
Sedum obtusatum ssp. obtusatum Sierra stonecrop Perennial herb  
Sedum obtusatum ssp. retusum Klamath stonecrop Perennial herb  
Sedum oreganum Oregon stonecrop Perennial herb 16
Sedum oregonense Cream stonecrop Perennial herb 4
Sedum roseum ssp. integrifolium Rosy stonecrop Perennial herb  
Sedum spathulifolium Pacific stonecrop Perennial herb 29
Sedum stenopetalum Narrow leaf stonecrop Perennial herb 9
Selaginella scopulorum Rocky mountain spike-moss Perennial herb  
Senecio aronicoides Butterweed Perennial herb  
Senecio canus Woolly ragwort Perennial herb  
Senecio clevelandii Cleveland's ragwort Perennial herb  
Senecio clevelandii var. heterophyllus Red hills ragwort Perennial herb  
Senecio cymbalarioides Cleft leaved groundsel Perennial herb  
Senecio fremontii Fremont's groundsel Perennial herb  
Senecio fremontii var. fremontii Fremont's groundsel Perennial herb  
Senecio fremontii var. occidentalis Western fremont's groundsel Perennial herb  
Senecio hydrophiloides Sweet marsh ragwort Perennial herb  
Senecio hydrophilus Alkali marsh ragwort Perennial herb  
Senecio integerrimus Mountain butterweed Perennial herb  
Senecio integerrimus var. exaltatus Columbia mountain butterweed Perennial herb  
Senecio integerrimus var. major Lambstongue groundsel Perennial herb  
Senecio integerrimus var. ochroleucus White flowered mountain butterweed Perennial herb  
Senecio macounii Siskiyou mtns. ragwort Perennial herb  
Senecio scorzonella Sierra ragwort Perennial herb  
Senecio serra Tall ragwort Perennial herb  
Senecio streptanthifolius Cleft leaved groundsel Perennial herb  
Senecio triangularis Groundsel Perennial herb  
Sericocarpus oregonensis Oregon whitetop aster Perennial herb  
Sericocarpus oregonensis ssp. oregonensis Oregon whitetop aster Perennial herb  
Sericocarpus oregonensis var. oregonensis Oregon whitetop aster Perennial herb  
Sibbaldia procumbens Sibbaldia Perennial herb  
Sidalcea asprella Harsh checker mallow Perennial herb (rhizomatous)  
Sidalcea asprella ssp. asprella Harsh checkerbloom, sierra foothills checkerbloom Perennial herb  
Sidalcea asprella ssp. nana Dwarf sierran checkerbloom Perennial herb  
Sidalcea celata Redding checkerbloom Perennial herb  
Sidalcea elegans Del norte checkerbloom Perennial herb  
Sidalcea glaucescens Glaucous checker mallow Perennial herb  
Sidalcea malachroides Maple leaved checkerbloom Perennial herb  
Sidalcea malviflora Wild hollyhock Perennial herb 20
Sidalcea malviflora ssp. asprella Harsh checker mallow Perennial herb (rhizomatous)  
Sidalcea oregana Oregon checker mallow Perennial herb 4
Sidalcea oregana ssp. eximia Coast checkerbloom Perennial herb  
Sidalcea oregana ssp. hydrophila Marsh checkerbloom Perennial herb  
Sidalcea oregana ssp. oregana Oregon checker mallow Perennial herb  
Sidalcea oregana ssp. spicata Oregon checker mallow Perennial herb 1
Sidalcea setosa Bristly checkerbloom Perennial herb 1
Silene bernardina Palmer's campion Perennial herb  
Silene campanulata Campanulate campion Perennial herb  
Silene campanulata ssp. glandulosa Campanulate catchfly Perennial herb  
Silene douglasii Douglas' campion Perennial herb 1
Silene douglasii var. douglasii Douglas's catchfly Perennial herb  
Silene grayi Gray's campion Perennial herb  
Silene hookeri Hooker's campion Perennial herb 1
Silene invisa Short petaled campion Perennial herb  
Silene laciniata Cardinal catchfly Perennial herb 6
Silene laciniata ssp. californica California indian pink Perennial herb 2
Silene lemmonii Lemmon's catchfly Perennial herb  
Silene marmorensis Marble mtn. campion Perennial herb  
Silene menziesii Menzies' campion Perennial herb  
Silene occidentalis Western campion Perennial herb 1
Silene serpentinicola Serpentine catchfly Perennial herb (rhizomatous) 2
Silene suksdorfii Cascade alpine catchfly Perennial herb  
Sisyrinchium bellum Blue eyed grass Perennial herb 62
Sisyrinchium douglasii var. douglasii Douglas' blue eyed grass Perennial herb 1
Sisyrinchium elmeri Elmer's golden eyed grass Perennial herb 1
Sisyrinchium idahoense Idaho blue eyed grass Perennial herb 5
Sisyrinchium idahoense var. idahoense Idaho blue eyed grass Perennial herb 1
Sisyrinchium idahoense var. occidentale Idaho blue eyed grass Perennial herb  
Sium suave Hemlock water parsnip Perennial herb 1
Smilacina racemosa Western false solomon's seal Perennial herb 19
Smilacina stellata Star flowered false solomon's seal Perennial herb 17
Smilax californica Greenbriar Perennial herb, Vine  
Smilax jamesii English peak greenbriar Perennial herb (rhizomatous)  
Solidago californica Oreja de liebre Perennial herb 27
Solidago canadensis Canada goldenrod Perennial herb 16
Solidago canadensis ssp. elongata Canada goldenrod Perennial herb 4
Solidago canadensis var. salebrosa Rough canada goldenrod Perennial herb 1
Solidago elongata West coast canada goldenrod Perennial herb 4
Solidago gigantea Smooth goldenrod Perennial herb (rhizomatous)  
Solidago lepida Western goldenrod Perennial herb (rhizomatous)  
Solidago lepida var. salebrosa Western goldenrod Perennial herb (rhizomatous) 1
Solidago multiradiata Northern goldenrod Perennial herb 1
Solidago sparsiflora Great basin goldenrod Perennial herb 4
Solidago spectabilis Showy goldenrod Perennial herb 3
Solidago velutina Threenerve goldenrod Perennial herb 8
Solidago velutina ssp. californica Oreja de liebre Perennial herb 27
Sparganium angustifolium Narrow leaved bur reed Perennial herb 2
Sparganium emersum Emersed bur-reed Perennial herb 2
Sparganium eurycarpum Broadfruit bur reed Perennial herb 5
Sparganium eurycarpum ssp. eurycarpum Bur reed Perennial herb 3
Sparganium eurycarpum var. eurycarpum Broadfruit bur reed Perennial herb  
Sparganium natans Small bur reed Perennial herb (rhizomatous)  
Spartina gracilis Alkali cord grass Perennial grass (rhizomatous)  
Sphaeralcea ambigua Desert mallow Perennial herb 29
Sphenosciadium capitellatum Grayswamp whiteheads Perennial herb 2
Spiranthes porrifolia Western ladies tresses Perennial herb  
Spiranthes romanzoffiana Ladies' tresses Perennial herb  
Spirodela polyrhiza Giant duckmeat Perennial herb  
Spirodela polyrrhiza Giant duckmeat Perennial herb  
Stachys ajugoides Hedge nettle Perennial herb 6
Stachys ajugoides var. rigida Hedge nettle Perennial herb  
Stachys bergii Berg's hedgenettle Perennial herb  
Stachys mexicana Mexican hedgenettle Perennial herb  
Stachys palustris Marsh hedgenettle Perennial herb 1
Stachys palustris ssp. pilosa Marsh hedge nettle Perennial herb 1
Stachys pilosa Prairie woundwort Perennial herb 1
Stachys pycnantha Short spike hedge nettle Perennial herb 2
Stachys rigida Rough hedgenettle Perennial herb 3
Stachys rigida var. quercetorum Rough hedgenettle Perennial herb  
Stachys rigida var. rigida Rough hedgenettle Perennial herb  
Stachys stricta Sonoma hedge nettle Perennial herb  
Stellaria borealis Boreal starwort Perennial herb  
Stellaria borealis ssp. sitchana Boreal starwort Perennial herb  
Stellaria calycantha Northern bogwort Perennial herb  
Stellaria crispa Ruffled starwort Perennial herb  
Stellaria longipes Longstalk starwort Perennial herb  
Stellaria longipes ssp. longipes Chickweed, starwort Perennial herb  
Stellaria longipes var. longipes Long stalked starwort Perennial herb  
Stellaria umbellata Umbellate chickweed Perennial herb  
Stenanthium occidentale Western stenanthium Perennial herb  
Stephanomeria lactucina Large flowered stephanomeria Perennial herb  
Stephanomeria tenuifolia Narrow leaved wire lettuce Perennial herb  
Stipa comata Needle-and-thread Perennial grass 10
Stipa exigua Little ricegrass Perennial grass  
Stipa hymenoides Indian rice grass Perennial grass 15
Stipa latiglumis Wide-glumed needle grass Perennial grass  
Stipa lemmonii Lemmon's needle grass Perennial grass 1
Stipa lemmonii var. lemmonii Lemmon's needle grass Perennial grass  
Stipa nelsonii Mountain needle grass Perennial grass  
Stipa nelsonii var. dorei Mountain needle grass Perennial grass 4
Stipa nevadensis Nevada needle grass Perennial grass  
Stipa occidentalis Western needlegrass Perennial grass 1
Stipa occidentalis var. californica California needle grass Perennial grass  
Stipa occidentalis var. occidentalis Western needle grass Perennial grass  
Stipa occidentalis var. pubescens Common western needle grass Perennial grass  
Stipa thurberiana Thurber's needle grass Perennial grass  
Streptanthus barbatus Pacific jewelflower Perennial herb  
Streptanthus cordatus Heartleaf jewelflower Perennial herb  
Streptanthus cordatus var. cordatus Heartleaf jewelflower Perennial herb  
Streptanthus cordatus var. duranii Duran's jewelflower Perennial herb  
Streptopus amplexifolius Claspleaf twistedstalk Perennial herb 1
Streptopus amplexifolius var. americanus Twisted stalk Perennial herb  
Stuckenia filiformis Fineleaf pondweed Perennial herb (rhizomatous)  
Stuckenia filiformis ssp. alpina Fineleaf pondweed Perennial herb  
Stuckenia pectinata Sago pondweed Perennial herb (aquatic)  
Suksdorfia ranunculifolia Buttercup suksdorfia Perennial herb  
Swertia albicaulis Whitestem gentian Perennial herb  
Swertia albicaulis var. albicaulis White stem green gentian Perennial herb  
Swertia albicaulis var. nitida Shining swertia Perennial herb  
Swertia radiata Giant frasera Perennial herb  
Swertia radiata var. radiata Elkweed Perennial herb  
Swertia shastaensis Perennial herb  
Symphyotrichum ascendens Western aster Perennial herb 1
Symphyotrichum bracteolatum Eaton's aster Perennial herb 2
Symphyotrichum campestre Western meadow aster Perennial herb  
Symphyotrichum eatonii Eaton's aster Perennial herb 2
Symphyotrichum foliaceum Alpine leafybract aster Perennial herb 2
Symphyotrichum foliaceum var. parryi Parry's aster Perennial herb 1
Symphyotrichum spathulatum Western mountain aster Perennial herb 1
Symphyotrichum spathulatum var. intermedium Larger western mountain aster Perennial herb  
Symphyotrichum spathulatum var. spathulatum Western mountain aster Perennial herb  
Symphyotrichum spathulatum var. yosemitanum Western bog aster Perennial herb  
Synthyris reniformis Snow queen Perennial herb 1
Taraxia subacaulis Long leaved suncup Perennial herb  
Taraxia tanacetifolia Tansy leaf evening primrose Perennial herb  
Tauschia howellii Howell's tauschia Perennial herb  
Tauschia kelloggii Kellogg's tauschia Perennial herb  
Tellima grandiflora Fringe cups Perennial herb 30
Thalictrum fendleri Fendler's meadow rue Perennial herb 10
Thalictrum fendleri var. polycarpum Torrey's meadow rue Perennial herb 13
Thalictrum polycarpum Fendler's meadow-rue Perennial herb 13
Thelypodium brachycarpum Short podded thelypodium Perennial herb  
Thelypodium flexuosum Nodding thelypodium Perennial herb  
Thelypodium laciniatum Feathery thelypodium Perennial herb 1
Thermopsis californica California goldenbanner Perennial herb 1
Thermopsis californica var. argentata Silvery false lupine Perennial herb (rhizomatous)  
Thermopsis gracilis Slender goldenbanner Perennial herb (rhizomatous) 1
Thermopsis gracilis var. gracilis Slender false lupine Perennial herb (rhizomatous) 1
Thermopsis macrophylla Santa ynez false lupine Perennial herb 2
Thermopsis macrophylla var. argentata Silvery false lupine Perennial herb (rhizomatous)  
Thermopsis macrophylla var. venosa Klamath false lupine Perennial herb (rhizomatous) 1
Thermopsis robusta Robust false lupine Perennial herb (rhizomatous)  
Tiarella trifoliata Sugar scoop Perennial herb 8
Tiarella trifoliata var. unifoliata Foamflower Perennial herb 4
Tofieldia occidentalis ssp. occidentalis Western tofieldia Perennial herb  
Tolmiea diplomenziesii Perennial herb 14
Tolmiea menziesii Pig a back plant Perennial herb 14
Tonestus lyallii Lyall's tonestus Perennial herb (rhizomatous)  
Torreyochloa erecta Upright mannagrass Perennial grass  
Torreyochloa pallida Pale false mannagrass Perennial grass (rhizomatous)  
Torreyochloa pallida var. pauciflora Mannagrass Perennial grass (rhizomatous)  
Toxicoscordion micranthum Small flowered star lily Perennial herb  
Toxicoscordion paniculatum Foothill deathcamas Perennial herb 2
Toxicoscordion venenosum Meadow deathcamas Perennial herb  
Toxicoscordion venenosum var. venenosum Meadow deathcamas Perennial herb  
Trautvetteria caroliniensis Carolina bugbane Perennial herb 1
Trautvetteria caroliniensis var. occidentalis Western trautvetteria Perennial herb 1
Triantha occidentalis Western false asphodel Perennial herb  
Triantha occidentalis ssp. occidentalis Western false asphodel Perennial herb  
Trientalis latifolia Western star flower Perennial herb 2
Trifolium andersonii Anderson's clover Perennial herb  
Trifolium andersonii ssp. andersonii Anderson's clover Perennial herb  
Trifolium andersonii var. andersonii Anderson's clover Perennial herb  
Trifolium breweri Brewer's clover Perennial herb  
Trifolium eriocephalum Woollyhead clover Perennial herb  
Trifolium eriocephalum ssp. eriocephalum Woollyhead clover Perennial herb  
Trifolium eriocephalum var. eriocephalum Hairy head clover Perennial herb  
Trifolium howellii Howell's clover Perennial herb  
Trifolium kingii King's clover Perennial herb  
Trifolium kingii var. productum King's clover Perennial herb  
Trifolium longipes Long stalked clover Perennial herb  
Trifolium longipes ssp. atrorubens Longstalk clover Perennial herb  
Trifolium longipes ssp. elmeri Elmer's clover Perennial herb  
Trifolium longipes ssp. hansenii Hansen's clover Perennial herb  
Trifolium longipes ssp. oreganum Oregon clover Perennial herb  
Trifolium longipes ssp. shastense Longstalk clover Perennial herb  
Trifolium longipes var. elmeri Elmer's clover Perennial herb  
Trifolium longipes var. longipes Long stalked clover Perennial herb  
Trifolium longipes var. nevadense Mountain clover Perennial herb  
Trifolium longipes var. oreganum Oregon clover Perennial herb  
Trifolium longipes var. shastense Shasta clover Perennial herb  
Trifolium macrocephalum Big headed clover Perennial herb  
Trifolium monanthum Carpet clover Perennial herb  
Trifolium productum Productive clover Perennial herb  
Trifolium siskiyouense Siskiyou clover Perennial herb  
Trifolium wormskioldii Cow clover Perennial herb 7
Trifolium wormskioldii var. siskiyouense Siskiyou clover Perennial herb  
Triglochin concinna Arrow grass Perennial herb (aquatic)  
Triglochin concinna var. debilis Slender arrow grass Perennial herb (aquatic)  
Triglochin maritima Seaside arrow grass Perennial herb (aquatic) 5
Trillium albidum Giant white wakerobin Perennial herb 3
Trillium angustipetalum Narrow petaled wakerobin Perennial herb 3
Trillium chloropetalum Giant wakerobin Perennial herb 7
Trillium ovatum Western wakerobin Perennial herb 10
Trillium ovatum ssp. oettingeri Salmon mtns. wakerobin Perennial herb  
Trillium ovatum ssp. ovatum Western wakerobin Perennial herb 2
Trillium rivale Siskiyou wakerobin Perennial herb 1
Trimorpha acris var. debilis Northern daisy Perennial herb  
Trisetum canescens Nodding trisetum Perennial grass  
Trisetum cernuum Nodding oatgrass Perennial grass  
Trisetum cernuum var. projectum Nodding oatgrass Perennial grass  
Trisetum spicatum Narrow oatgrass Perennial grass  
Trisetum wolfii Beardless oatgrass Perennial grass  
Triteleia bridgesii Bridges' brodiaea Perennial herb 3
Triteleia crocea Yellow brodiaea Perennial herb  
Triteleia crocea var. crocea Yellow triteleia Perennial herb (bulb)  
Triteleia crocea var. modesta Trinity mountains pretty face Perennial herb (bulb)  
Triteleia dudleyi Dudley's triplet lily Perennial herb  
Triteleia grandiflora Largeflower triteleia Perennial herb  
Triteleia grandiflora var. howellii Howell's triteleia Perennial herb  
Triteleia hendersonii Henderson's triteleia Perennial herb (bulb)  
Triteleia hendersonii var. hendersonii Henderson's triteleia Perennial herb (bulb)  
Triteleia hyacinthina Wild hyacinth Perennial herb 9
Triteleia ixioides Pretty face Perennial herb 7
Triteleia ixioides ssp. anilina Mountain pretty face Perennial herb 1
Triteleia ixioides ssp. scabra Foothill triteleia Perennial herb 1
Turritis glabra Tower rockcress Perennial herb  
Typha latifolia Broadleaf cattail Perennial herb (aquatic) 22
Urtica dioica Stinging nettle Perennial herb 10
Urtica dioica ssp. gracilis Nettle Perennial herb  
Urtica dioica ssp. holosericea Stinging nettle Perennial herb 5
Utricularia macrorhiza Common bladderwort Perennial herb  
Vahlodea atropurpurea Mountain hairgrass Perennial grass 1
Valeriana californica California valerian Perennial herb  
Valeriana hookeri Scouler's valerian Perennial herb  
Valeriana sitchensis Sitka valerian Perennial herb 1
Valeriana sitchensis ssp. scouleri Scouler's valerian Perennial herb  
Valeriana sitchensis ssp. sitchensis Sitka valerian Perennial herb 1
Vancouveria chrysantha Siskiyou inside out flower Perennial herb (rhizomatous) 2
Vancouveria hexandra Northern vancouveria Perennial herb 21
Vancouveria planipetala Inside out flower Perennial herb 4
Veratrum californicum California false hellebore Perennial herb 3
Veratrum californicum var. californicum California corn lily Perennial herb  
Veratrum insolitum Siskiyou false hellebore Perennial herb  
Veratrum viride American false hellebore Perennial herb 4
Verbena lasiostachys Western vervain Perennial herb 17
Verbena lasiostachys var. lasiostachys Vervain Perennial herb 17
Veronica americana American brooklime Perennial herb 6
Veronica copelandii Copeland's speedwell Perennial herb  
Veronica cusickii Cusick's speedwell Perennial herb  
Veronica scutellata Marsh speedwell Perennial herb  
Veronica serpyllifolia Thymeleaf speedwell Perennial herb  
Veronica serpyllifolia ssp. humifusa Sprawling speedwell Perennial herb  
Veronica wormskjoldii American alpine speedwell Perennial herb  
Vicia americana American vetch Perennial herb, Vine 4
Vicia americana ssp. americana American vetch Perennial herb, Vine  
Vicia americana var. americana Vetch Perennial herb, Vine  
Viola adunca Western dog violet Perennial herb 18
Viola adunca ssp. adunca Western dog violet Perennial herb 1
Viola adunca var. adunca Western bog violet Perennial herb 1
Viola adunca var. kirkii Yosemite dog violet Perennial herb 1
Viola bakeri Baker's violet Perennial herb 1
Viola beckwithii Great basin violet Perennial herb  
Viola cuneata Wedge leaf violet Perenn