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Criteria:   found in Los Angeles County  •   is native  •  group by lifeform
3845  records include photos for these plants # number of sources
Scientific Name Common Name Lifeform #
  Lifeform: Annual1389 plants
Abronia pogonantha Mohave sand verbena Annual herb  
Abronia turbinata Trans montane sand verbena Annual herb  
Abronia villosa Hairy sand verbena Annual herb 4
Abronia villosa var. aurita Yellow hairy sand verbena Annual herb  
Abronia villosa var. villosa Hairy sand verbena Annual herb  
Acanthomintha ilicifolia San Diego thorn mint Annual herb  
Acanthomintha obovata Obvate-leafed thorn mint Annual herb  
Acanthomintha obovata ssp. cordata Heart leaved thorn mint Annual herb  
Acanthoscyphus parishii Parish's oxytheca Annual herb  
Acanthoscyphus parishii var. abramsii Abrams' oxytheca Annual herb  
Acanthoscyphus parishii var. cienegensis Cienega seca oxytheca Annual herb  
Acanthoscyphus parishii var. goodmaniana Cushenbury oxytheca Annual herb  
Acanthoscyphus parishii var. parishii Parish's oxytheca Annual herb  
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 maritimus Coastal lotus Annual herb 2
Acmispon maritimus var. brevivexillus Coastal lotus Annual herb  
Acmispon maritimus var. maritimus Coastal lotus Annual herb  
Acmispon micranthus Small flowered lotus Annual herb 2
Acmispon parviflorus Hill lotus Annual herb  
Acmispon strigosus Strigose lotus Annual herb 3
Acmispon wrangelianus Chilean trefoil Annual herb  
Agoseris heterophylla Mountain dandelion Annual herb  
Agoseris heterophylla var. crenulata Annual agoseris Annual herb  
Agoseris heterophylla var. cryptopleura Mountain dandelion Annual herb  
Agoseris heterophylla var. heterophylla Annual agoseris Annual herb  
Agoseris heterophylla var. turgida Annual agoseris Annual herb  
Aliciella latifolia Broad leaf gilia Annual herb  
Aliciella latifolia ssp. latifolia Broadleaf gilia Annual herb  
Aliciella leptomeria Sand aliciella Annual herb  
Aliciella lottiae Lott's gilia Annual herb  
Allophyllum divaricatum Purple false gilia Annual herb  
Allophyllum gilioides Dense false gilia Annual herb  
Allophyllum gilioides ssp. gilioides Dense false gilia Annual herb  
Allophyllum gilioides ssp. violaceum Dense false gilia Annual herb  
Allophyllum glutinosum Sticky false gilia Annual herb  
Allophyllum integrifolium White allophyllum Annual herb  
Alopecurus carolinianus Carolina foxtail Annual grass  
Alopecurus saccatus Foxtail Annual grass  
Amaranthus blitoides Prostrate pigweed Annual herb  
Amaranthus californicus California amaranth Annual herb  
Amaranthus palmeri Palmer's amaranth Annual herb  
Amaranthus powellii Powell's amaranth Annual herb  
Amaranthus watsonii Watson's amaranth Annual herb  
Amblyopappus pusillus Pineapple weed Annual herb  
Ambrosia acanthicarpa Annual burrweed Annual herb 3
Ammannia coccinea Red ammannia Annual herb  
Ammannia robusta Grand ammania Annual herb  
Amsinckia douglasiana Douglas' fiddleneck Annual herb  
Amsinckia eastwoodiae Eastwood's fiddleneck Annual herb 1
Amsinckia intermedia Common fiddleneck Annual herb  
Amsinckia lunaris Bent flowered 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 spectabilis Seaside fiddleneck Annual herb  
Amsinckia spectabilis var. spectabilis Seaside 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
Amsinckia vernicosa Green fiddleneck Annual herb  
Amsinckia vernicosa var. vernicosa Green fiddleneck Annual herb  
Ancistrocarphus filagineus Woolly fishhooks Annual herb  
Androsace elongata California rockjasmine Annual herb  
Androsace elongata ssp. acuta California androsace Annual herb  
Anisocoma acaulis Scale bud Annual herb 2
Antirrhinum coulterianum Coulter's snapdragon Annual herb 2
Antirrhinum kelloggii Lax snapdragon Annual herb 1
Antirrhinum multiflorum Sticky snapdragon Annual, Perennial herb 4
Antirrhinum nuttallianum Nuttall's snapdragon Annual, Perennial herb 1
Antirrhinum nuttallianum ssp. nuttallianum Nuttall's snapdragon Annual, Perennial herb  
Antirrhinum nuttallianum ssp. subsessile Nuttall's snapdragon Annual, Perennial herb  
Aphanes occidentalis Ladie's mantle Annual, Perennial herb  
Aphanisma blitoides Aphanisma Annual herb  
Aphyllon purpureum Naked broom rape Annual herb  
Aphyllon vallicolum Valley broom rape Annual herb  
Apiastrum angustifolium Wild celery Annual herb  
Argemone munita Prickly poppy Annual, Perennial herb 4
Aristida adscensionis Three awn Annual grass 4
Aster frondosus Short rayed alkali aster Annual herb  
Astragalus acutirostris Beaked rattle weed Annual herb  
Astragalus didymocarpus Dwarf white milk vetch Annual herb  
Astragalus didymocarpus var. didymocarpus Common dwarf milkvetch Annual herb  
Astragalus didymocarpus var. dispermus Notch leaved locoweed Annual herb  
Astragalus didymocarpus var. obispoensis San luis obispo milk vetch Annual herb  
Astragalus gambelianus Loco weed Annual herb  
Astragalus hornii Horn's milkvetch Annual herb  
Astragalus hornii var. hornii Horn's milk vetch Annual herb  
Astragalus lentiginosus Freckled milk vetch Annual, Perennial herb  
Astragalus lentiginosus var. albifolius White leaved milk vetch Annual, Perennial herb  
Astragalus lentiginosus var. borreganus Borrego milk vetch Annual herb  
Astragalus lentiginosus var. fremontii Fremont's milk vetch Annual, Perennial herb  
Astragalus lentiginosus var. nigricalycis Black hair milk vetch Annual, Perennial herb  
Astragalus lentiginosus var. variabilis Freckled milk vetch Annual, Perennial herb  
Astragalus nutans Providence Mountain milkvetch Annual herb  
Astragalus rattanii Rattan's milk vetch Annual herb  
Astragalus tener Alkali milk vetch Annual herb  
Astragalus tener var. titi Coastal dunes milk vetch Annual herb  
Athysanus pusillus Dwarf athysanus Annual herb  
Athysanus unilateralis Ladiestongue mustard Annual herb  
Atriplex argentea Silverscale saltbush Annual herb 2
Atriplex argentea var. expansa Mojave silverscale Annual herb 2
Atriplex argentea var. mohavensis Mojave silverscale Annual herb 2
Atriplex coronata Crownscale Annual herb  
Atriplex coronata var. coronata Crownscale Annual herb  
Atriplex covillei Coville's orach Annual herb  
Atriplex dioica Spike saltbush Annual herb  
Atriplex elegans Wheelscale Annual herb  
Atriplex pacifica South coast saltscale Annual herb  
Atriplex parishii Parish's brittlescale Annual herb  
Atriplex patula Spear oracle Annual herb 3
Atriplex phyllostegia Leafcover saltweed Annual herb 1
Atriplex serenana Saltscale Annual herb 1
Atriplex serenana var. davidsonii Davidson's saltscale Annual herb  
Atriplex serenana var. serenana Saltscale Annual herb  
Atriplex subspicata Spike saltbush Annual herb  
Atriplex torreyi Torrey's saltbush Annual herb  
Atriplex torreyi var. torreyi Torrey's saltbush Annual herb  
Baileya pleniradiata Wooly marigold Annual, Perennial herb 2
Bergia texana Texas bergia Annual herb  
Bidens frondosa Sticktight Annual herb  
Blennosperma nanum Yellow carpet Annual herb  
Blennosperma nanum var. nanum Common blennosperma Annual herb  
Bowlesia incana Bowlesia Annual herb 1
Bromus arizonicus Arizona brome Annual grass 1
Bromus orcuttianus Orcutt's brome grass Annual grass 1
Bromus vulgaris Common brome Annual grass 1
Calandrinia breweri Brewer's calandrinia Annual herb  
Calandrinia ciliata Redmaids Annual herb 6
Calandrinia maritima Seaside calandrinia Annual herb  
Calandrinia menziesii Calandrinia Annual herb 6
Calibrachoa parviflora Seaside petunia Annual herb  
California macrophylla Round leaved filaree Annual herb  
Callitriche marginata Winged water starwort Annual herb (aquatic)  
Calycoseris parryi Yellow tackstem Annual herb  
Calyptridium monandrum Common pussypaws Annual herb  
Calyptridium parryi Parry's pussypaws Annual herb  
Calyptridium parryi var. parryi Parry's pussypaws Annual herb  
Calyptridium umbellatum Pussy toes Annual, Perennial herb 3
Calystegia felix Lucky morning-glory Annual herb  
Camissonia bistorta California sun cup Annual herb 5
Camissonia boothii Booth's sun cup Annual herb  
Camissonia boothii ssp. boothii Booth's evening primrose Annual herb  
Camissonia boothii ssp. condensata Clustered booth's desert primrose Annual herb  
Camissonia boothii ssp. decorticans Redish shredding primrose Annual herb  
Camissonia boothii ssp. desertorum Desert shredding primrose Annual herb  
Camissonia brevipes Yellov cups Annual herb  
Camissonia brevipes ssp. brevipes Golden sun cup Annual herb  
Camissonia californica California primrose Annual herb 1
Camissonia campestris Field primrose Annual herb  
Camissonia campestris ssp. campestris Field sun cup Annual herb  
Camissonia claviformis Brown eyed primrose Annual herb  
Camissonia claviformis ssp. aurantiaca Pinnate leaved primrose Annual herb  
Camissonia claviformis ssp. claviformis Clavate fruited primrose Annual herb  
Camissonia confusa San bernardino sun cup Annual herb  
Camissonia contorta Contorted sun cup Annual herb  
Camissonia graciliflora Hill sun cup Annual herb  
Camissonia guadalupensis Guadalupe suncup Annual herb  
Camissonia guadalupensis ssp. clementina San clemente island evening primrose Annual herb  
Camissonia hardhamiae Hardham's evening primrose Annual herb  
Camissonia hirtella Hairy sun cups Annual herb  
Camissonia ignota Jurupa hills sun cups Annual herb 1
Camissonia intermedia Intermediate sun cups Annual herb  
Camissonia kernensis Kern sun cups Annual herb  
Camissonia kernensis ssp. gilmanii Gilman's evening primrose Annual herb  
Camissonia lacustris Lakebed sun cup Annual herb  
Camissonia lewisii Lewis's evening primrose Annual herb  
Camissonia micrantha Spencer primrose Annual herb 2
Camissonia pallida Pale yellow sun cup Annual herb 2
Camissonia pallida ssp. pallida Pale sun cup Annual herb  
Camissonia palmeri Palmer's sun cup Annual herb  
Camissonia pusilla Little wiry sun cup Annual herb  
Camissonia refracta Narrow leaved primrose Annual herb  
Camissonia robusta Robust sun cup Annual herb  
Camissonia strigulosa Contorted primrose Annual herb  
Camissoniopsis bistorta California sun cup Annual herb 5
Camissoniopsis cheiranthifolia ssp. cheiranthifolia Beach evening-primrose Annual, Perennial herb 1
Camissoniopsis confusa San bernardino sun cup Annual herb  
Camissoniopsis guadalupensis San clemente island evening-primrose Annual herb  
Camissoniopsis guadalupensis ssp. clementina San clemente island evening-primrose Annual herb  
Camissoniopsis hardhamiae Hardham's evening-primrose Annual herb  
Camissoniopsis hirtella Hairy sun cup Annual herb  
Camissoniopsis ignota Jurupa hills sun cup Annual herb 1
Camissoniopsis intermedia Intermediate sun cups Annual herb  
Camissoniopsis lewisii Lewis' evening-primrose Annual herb  
Camissoniopsis luciae Santa lucia sun cup Annual herb  
Camissoniopsis micrantha Spencer primrose Annual herb 2
Camissoniopsis pallida Pale yellow sun cup Annual herb 2
Camissoniopsis pallida ssp. pallida Pale sun cup Annual herb  
Camissoniopsis robusta Robust subcup Annual herb  
Canbya candida Pygmy poppy Annual herb  
Cardamine oligosperma Idaho bittercress Annual, Perennial herb  
Castilleja attenuata Narrow leaved owl's clover Annual herb  
Castilleja densiflora Dense flower owl's clover Annual herb  
Castilleja densiflora ssp. densiflora Dense flower owl's clover Annual herb  
Castilleja densiflora ssp. gracilis Graceful 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 exserta ssp. venusta Purple owl's clover Annual herb  
Castilleja minor Little paintbrush Annual herb 1
Castilleja minor ssp. spiralis Lesser paintbrush Annual herb  
Caulanthus amplexicaulis Clasping leaved caulanthus Annual herb  
Caulanthus amplexicaulis var. amplexicaulis Clasping leaved caulanthus Annual herb  
Caulanthus anceps Lemmon's mustard Annual herb  
Caulanthus cooperi Cooper caulanthus Annual herb  
Caulanthus coulteri Coulter's jewel flower Annual herb  
Caulanthus coulteri var. coulteri Coulter's jewel flower Annual herb  
Caulanthus heterophyllus Slender pod jewelflower Annual herb  
Caulanthus heterophyllus var. heterophyllus Slender pod jewelflower Annual herb  
Caulanthus inflatus Desert candle Annual herb 3
Caulanthus lasiophyllus California mustard Annual herb  
Caulanthus pilosus Hairy wild cabbage Annual, Perennial herb  
Cenchrus spinifex Coastal sandbur Annual grass  
Centaurium davyi Davy's centaury Annual herb  
Centaurium exaltatum Cancha lagua Annual herb  
Centaurium muehlenbergii Monterey centaury Annual herb 2
Centaurium venustum Beautiful centaury Annual herb  
Centromadia parryi Pappose tarweed Annual herb  
Centromadia parryi ssp. australis Southern tarplant Annual herb 1
Centromadia parryi ssp. parryi Pappose tarplant Annual herb  
Centromadia pungens Common tarweed Annual herb 1
Centromadia pungens ssp. laevis Smooth tarplant Annual herb  
Centromadia pungens ssp. maritima Common tarweed Annual herb  
Centromadia pungens ssp. pungens Common tarweed Annual herb  
Centromadia pungens ssp. septentrionalis Common tarweed Annual herb  
Centrostegia thurberi Thurber spiny herb Annual herb  
Chaenactis artemisiifolia Artemisia leaved chaenactis Annual herb 4
Chaenactis carphoclinia Pebble pincushion Annual herb  
Chaenactis douglasii Chaenactis Annual, Perennial herb  
Chaenactis douglasii var. douglasii Dusty pincushions Annual, Perennial herb  
Chaenactis fremontii Fremont pincushion Annual herb  
Chaenactis glabriuscula Common yellow chaenactis Annual herb 3
Chaenactis glabriuscula var. glabriuscula Common yellow chaenactis Annual herb  
Chaenactis glabriuscula var. lanosa Pincushion flower Annual herb  
Chaenactis glabriuscula var. orcuttiana Orcutt's yellow chaenactis Annual herb  
Chaenactis macrantha Mohave pincushion Annual herb  
Chaenactis stevioides Esteve pincushion Annual herb 2
Chaenactis xantiana Xantus' chaenactis Annual herb 1
Chamaesyce abramsiana Abrams' prostrate spurge Annual herb  
Chamaesyce micromera Desert spurge Annual herb  
Chamaesyce ocellata Contura creek spurge Annual herb  
Chamaesyce ocellata ssp. arenicola Sand spurge Annual herb  
Chamaesyce ocellata ssp. ocellata Contura creek sandmat Annual herb  
Chamaesyce serpens Creeping spurge Annual herb  
Chamaesyce serpyllifolia Thyme leafed spurge Annual herb  
Chamaesyce serpyllifolia ssp. hirtula Hairy thyme leafed spurge Annual herb  
Chamaesyce serpyllifolia ssp. serpyllifolia Thyme leafed spurge Annual herb  
Chamaesyce setiloba Yuma spurge Annual herb  
Chamomilla occidentalis Western chamomile Annual herb  
Chamomilla suaveolens Common pineapple weed Annual herb  
Chenopodium album var. stevensii Stevens' lambsquarters Annual herb  
Chenopodium atrovirens Dark green goosefoot Annual herb  
Chenopodium berlandieri Pit seed goosefoot Annual herb  
Chenopodium berlandieri var. sinuatum Pitseed goosefoot Annual herb  
Chenopodium berlandieri var. zschackei Pit seed goosefoot Annual herb  
Chenopodium desiccatum Dry goosefoot Annual herb  
Chenopodium fremontii Fremont's goosefoot Annual herb  
Chenopodium glaucum Oak leaved goosefoot Annual herb  
Chenopodium hians Gaping goosefoot Annual herb  
Chenopodium incognitum Masked goosefoot Annual herb  
Chenopodium leptophyllum Thin leaved goosefoot Annual herb  
Chenopodium littoreum Coastal goosefoot Annual herb  
Chenopodium pratericola Meadow goosefoot Annual herb  
Chenopodium rubrum Red goosefoot Annual herb  
Chloropyron maritimum Salt marsh bird's beak Annual herb  
Chloropyron maritimum ssp. canescens Salt marsh bird's beak Annual herb  
Chloropyron maritimum ssp. maritimum Salt marsh bird's-beak Annual herb  
Chloropyron molle Soft bird's beak Annual herb  
Chorizanthe angustifolia Narrow leaf spineflower Annual herb  
Chorizanthe brevicornu Brittle spine flower Annual herb  
Chorizanthe brevicornu var. brevicornu Brittle spineflower Annual herb  
Chorizanthe breweri Brewer's spineflower Annual herb  
Chorizanthe clevelandii Cleveland's spineflower Annual herb  
Chorizanthe diffusa Diffuse spineflower Annual herb  
Chorizanthe leptotheca Peninsular spineflower Annual herb  
Chorizanthe membranacea Pink spineflower Annual herb 1
Chorizanthe parryi Parry's spineflower Annual herb  
Chorizanthe parryi var. fernandina San fernando valley spineflower Annual herb  
Chorizanthe parryi var. parryi Parry's spineflower Annual herb  
Chorizanthe procumbens Prostrate spineflower Annual herb  
Chorizanthe pungens Monterey spineflower Annual herb  
Chorizanthe rigida Rigid spiny herb Annual herb  
Chorizanthe spinosa Mojave spineflower Annual herb  
Chorizanthe staticoides Turkish rugging Annual herb 3
Chorizanthe watsonii Watson's spineflower Annual herb  
Chorizanthe xanti Xantus' spineflower Annual herb  
Chorizanthe xanti var. xanti Xantus' spineflower Annual herb  
Chylismia brevipes Yellow cups Annual, Perennial herb 1
Chylismia claviformis Clavate fruited primrose Annual, Perennial herb  
Chylismia claviformis ssp. aurantiaca Pinnate leaved primrose Annual, Perennial herb  
Chylismia claviformis ssp. claviformis Browneyes Annual, Perennial herb  
Chylismia claviformis ssp. funerea Clavate fruited primrose Annual, Perennial herb  
Chylismia claviformis ssp. integrior Clavate fruited primrose Annual, Perennial herb  
Chylismia claviformis ssp. lancifolia Clavate fruited primrose Annual, Perennial herb  
Chylismia claviformis ssp. peirsonii Peirson's clavate fruited primrose Annual, Perennial herb  
Chylismia claviformis ssp. yumae Yuma clavate fruited primrose Annual, Perennial herb  
Cistanthe maritima Seaside calandrinia Annual herb  
Clarkia affinis Chaparral fairyfan Annual herb  
Clarkia amoena Farewell to spring Annual herb 16
Clarkia amoena ssp. amoena Farewell to spring Annual herb 1
Clarkia amoena ssp. whitneyi Farewell to spring Annual herb 2
Clarkia biloba Two lobed clarkia Annual herb  
Clarkia biloba ssp. brandegeae Brandegee's two lobed clarkia Annual herb  
Clarkia biloba ssp. brandegeeae Brandegee's clarkia Annual herb  
Clarkia bottae Punch bowl godetia Annual herb 7
Clarkia concinna Red ribbons Annual herb 4
Clarkia cylindrica Speckled clarkia Annual herb  
Clarkia cylindrica ssp. clavicarpa Speckled clarkia Annual herb  
Clarkia cylindrica ssp. cylindrica Speckled clarkia Annual herb  
Clarkia dudleyana Dudley's clarkia Annual herb  
Clarkia epilobioides Willow herb clarkia Annual herb  
Clarkia heterandra California gaura Annual herb  
Clarkia purpurea Purple clarkia Annual herb 9
Clarkia purpurea ssp. purpurea Purple clarkia Annual herb 2
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 rubicunda Farewell to spring Annual herb 8
Clarkia similis Ramona clarkia Annual herb  
Clarkia speciosa Red spotted clarkia Annual herb 3
Clarkia speciosa ssp. polyantha Red spot clarkia Annual herb  
Clarkia unguiculata Woodland clarkia Annual herb 18
Clarkia xantiana Xantus' clarkia Annual herb  
Clarkia xantiana ssp. parviflora Kern canyon clarkia Annual herb  
Clarkia xantiana ssp. xantiana Xantus' clarkia Annual herb  
Claytonia exigua Little spring beauty Annual herb  
Claytonia exigua ssp. exigua Viridis Annual herb  
Claytonia exigua ssp. glauca Blue leaved spring beauty Annual herb  
Claytonia gypsophiloides Gypsum spring beauty 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 parviflora ssp. viridis Green miner's lettuce Annual herb 1
Claytonia perfoliata Miner's lettuce Annual herb 5
Claytonia perfoliata ssp. intermontana Miner's lettuce Annual herb  
Claytonia perfoliata ssp. mexicana Southern 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  
Cleomella obtusifolia Mojave cleomella Annual herb  
Collinsia bartsiifolia White collinsia Annual herb 1
Collinsia bartsiifolia var. bartsiifolia White chinese houses Annual herb  
Collinsia bartsiifolia var. davidsonii Davidson's collinsia Annual herb 1
Collinsia bartsiifolia var. stricta White blue eyed mary Annual herb 1
Collinsia callosa Desert collinsia Annual herb  
Collinsia childii Child's collinsia Annual herb  
Collinsia concolor White collinsia Annual herb  
Collinsia heterophylla Chinese houses Annual herb 19
Collinsia heterophylla var. austromontana Southern chinese houses Annual herb  
Collinsia heterophylla var. heterophylla Purple chinese houses Annual herb  
Collinsia parryi Parry's collinsia Annual herb  
Collinsia parviflora Few flowered blue eyed mary Annual herb  
Collinsia sparsiflora Few flowered collinsia Annual herb  
Collinsia tinctoria Tincture plant Annual herb 1
Collinsia torreyi Torrey's collinsia Annual herb  
Collinsia torreyi var. brevicarinata Torrey's collinsia Annual herb  
Collinsia torreyi var. torreyi Torrey's collinsia Annual herb  
Collinsia torreyi var. wrightii Wright's collinsia Annual herb  
Collomia grandiflora Large flowered collomia Annual herb 3
Convolvulus simulans Small flowered morning glory Annual herb  
Conyza canadensis Canada horseweed Annual herb  
Conyza canadensis var. canadensis Canadian horseweed Annual herb  
Conyza coulteri Coulter's horseweed Annual herb  
Cordylanthus eremicus Desert bird's beak Annual herb (hemiparasitic)  
Cordylanthus eremicus ssp. eremicus Desert bird's beak Annual herb (hemiparasitic)  
Cordylanthus maritimus Salt marsh bird's beak Annual herb  
Cordylanthus maritimus ssp. canescens Salt marsh bird's beak Annual herb  
Cordylanthus maritimus ssp. maritimus Salt marsh bird's beak Annual herb (hemiparasitic)  
Cordylanthus mollis Soft bird's beak Annual herb  
Cordylanthus nevinii Nevin's bird's beak Annual herb  
Cordylanthus rigidus Rigid bird's beak Annual herb  
Cordylanthus rigidus ssp. brevibracteatus Short bracted bird's beak Annual herb  
Cordylanthus rigidus ssp. rigidus Rigid bird's beak Annual herb  
Cordylanthus rigidus ssp. setiger Bristly Bird's Beak Annual herb (hemiparasitic)  
Cordylanthus rigidus ssp. setigerus Bird's beak Annual herb  
Coreopsis bigelovii Bigelow coreopsis Annual herb 3
Coreopsis californica var. californica California coreopsis Annual herb  
Coreopsis calliopsidea Leafy stemmed coreopsis Annual herb 2
Coreopsis douglasii Douglas' coreopsis Annual herb 1
Crassula aquatica Aquatic pygmy weed Annual herb  
Crassula connata Sand pygmy weed Annual herb 1
Crassula saginoides Aquatic pygmy weed Annual herb  
Crassula solieri Little pygmy weed Annual herb  
Croton setiger Turkey-mullein Annual herb 4
Croton setigerus Dove weed Annual herb 1
Cryptantha affinis Common cryptantha Annual herb  
Cryptantha barbigera Bearded cryptantha Annual herb  
Cryptantha barbigera var. barbigera Bearded cryptantha Annual herb  
Cryptantha barbigera var. fergusoniae Palm springs cryptantha Annual herb  
Cryptantha circumscissa Western forget me not Annual herb  
Cryptantha circumscissa var. circumscissa Cushion cryptantha Annual herb  
Cryptantha clevelandii Common cryptantha Annual herb  
Cryptantha clevelandii var. clevelandii Cleveland's cryptantha Annual herb  
Cryptantha clevelandii var. florosa Coastal cryptantha Annual herb  
Cryptantha clokeyi Prickly cryptantha Annual herb  
Cryptantha corollata Coast range cryptantha Annual herb  
Cryptantha decipiens Gravel cryptantha Annual herb  
Cryptantha dumetorum Bush loving cryptantha Annual herb  
Cryptantha echinella Prickly cryptantha Annual herb  
Cryptantha flaccida Beaked cryptantha Annual herb  
Cryptantha holoptera Rough stemmed forget me not Annual herb  
Cryptantha intermedia Common cryptanth Annual herb  
Cryptantha intermedia var. intermedia Common cryptantha Annual herb  
Cryptantha leiocarpa Popcorn flower Annual herb  
Cryptantha maritima Guadalupe island cryptantha Annual herb  
Cryptantha micrantha Purple root cryptantha Annual herb  
Cryptantha micrantha var. lepida Mountain red-root cryptantha Annual herb  
Cryptantha micrantha var. micrantha Red-root cryptantha Annual herb  
Cryptantha micromeres Small flowered cryptantha Annual herb  
Cryptantha microstachys Tejon cryptantha Annual herb  
Cryptantha muricata Prickly cryptantha Annual herb 2
Cryptantha muricata var. denticulata Prickly-nut cryptantha Annual herb 2
Cryptantha muricata var. jonesii Jones' cryptantha Annual herb 2
Cryptantha muricata var. muricata Showy prickly-nut cryptantha Annual herb 2
Cryptantha nemaclada Colusa cryptantha Annual herb  
Cryptantha nevadensis Nevada forget me not Annual herb  
Cryptantha nevadensis var. nevadensis Nevada cryptantha Annual herb  
Cryptantha nevadensis var. rigida Rigid cryptantha Annual herb  
Cryptantha oxygona Sharp nut cryptantha Annual herb  
Cryptantha pterocarya Winged nut forget me not Annual herb  
Cryptantha pterocarya var. pterocarya Wingnut cryptantha Annual herb  
Cryptantha pterocarya var. purpusii Purpus' cryptantha Annual herb  
Cryptantha rattanii Rattan's cryptantha Annual herb  
Cryptantha similis Cushion cryptantha Annual herb  
Cryptantha simulans Pine cryptantha Annual herb  
Cryptantha sparsiflora Slender cryptantha Annual herb  
Cryptantha traskiae Trask's cryptantha Annual herb  
Cryptantha utahensis Scented forget me not Annual herb  
Cryptantha wigginsii Wiggins' cryptantha Annual herb  
Cucurbita palmata Coyote melon Annual, Perennial herb  
Cuscuta californica California dodder Annual herb, Vine (parasitic)  
Cuscuta californica var. breviflora California dodder Annual herb, Vine (parasitic)  
Cuscuta californica var. californica Short flowered dodder Annual herb, Vine (parasitic)  
Cuscuta californica var. papillosa Papillate dodder Annual herb, Vine (parasitic)  
Cuscuta campestris Field dodder Annual herb, Vine (parasitic)  
Cuscuta denticulata Desert dodder Annual herb, Vine (parasitic)  
Cuscuta indecora Big seed alfalfa dodder Annual herb, Vine (parasitic)  
Cuscuta indecora var. indecora Big seed alfalfa dodder Annual herb, Vine (parasitic)  
Cuscuta indecora var. neuropetala Nerve petaled dodder Annual herb, Vine (parasitic)  
Cuscuta obtusiflora Peruvian dodder Annual herb, Vine (parasitic)  
Cuscuta obtusiflora var. glandulosa Peruvian dodder Annual herb, Vine (parasitic)  
Cuscuta occidentalis California dodder Annual herb, Vine (parasitic)  
Cuscuta pacifica Goldenthread Annual herb, Vine (parasitic)  
Cuscuta pacifica var. pacifica Dodder Annual herb, Vine (parasitic)  
Cuscuta pentagona Western field dodder Annual herb, Vine (parasitic)  
Cuscuta salina Saltmarsh dodder Annual herb, Vine (parasitic)  
Cuscuta salina var. major Dodder Annual herb, Vine (parasitic)  
Cuscuta salina var. salina Salt marsh dodder Annual herb, Vine (parasitic)  
Cuscuta subinclusa Canyon dodder Annual herb, Vine (parasitic)  
Cyperus acuminatus Short pointed cyperus 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
Deinandra fasciculata Clustered tarweed Annual herb 5
Deinandra increscens ssp. foliosa Leafy tarplant Annual herb  
Deinandra kelloggii Kellogg's tarweed Annual herb 1
Deinandra pallida Kern tarweed Annual herb  
Deinandra paniculata Paniculate tarplant Annual herb 2
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. glabra Smooth western tansy mustard Annual herb  
Descurainia pinnata ssp. halictorum Alkali western tansy mustard Annual herb  
Descurainia pinnata ssp. intermedia Intermediate western tansy mustard Annual herb  
Descurainia pinnata ssp. menziesii Menzies' tansy mustard Annual herb  
Dicoria canescens Desert dicoria Annual herb  
Diplacus bigelovii Bigelow mimulus Annual herb 2
Diplacus bigelovii var. bigelovii Bigelow's monkeyflower Annual herb  
Diplacus bigelovii var. cuspidatus Bigelow's monkeyflower Annual herb  
Diplacus bolanderi Bolander's monkeyflower Annual herb  
Diplacus brevipes Wide throated yellow monkeyflower Annual herb 2
Diplacus constrictus Dense fruited monkeyflower Annual herb  
Diplacus fremontii Fremont's monkeyflower Annual herb  
Diplacus johnstonii Johnston's monkeyflower Annual herb  
Diplacus parviflorus Annual herb 3
Diplacus pictus calico monkeyflower Annual herb 3
Diplacus rutilus Annual herb 3
Diplacus speciosus Annual herb 2
Diplacus traskiae Santa Catalina Island monkeyflower Annual herb  
Dissanthelium californicum California dissanthelium Annual grass 1
Dithyrea californica Spectacle pod Annual herb  
Dodecahema leptoceras Slender horned spineflower Annual herb  
Draba albertina Alberta whitlow grass Annual, Perennial herb  
Draba cuneifolia Wedge leaved draba Annual herb  
Draba cuneifolia var. integrifolia Wedgeleaf draba Annual herb  
Draba cuneifolia var. sonorae Sonora draba Annual herb  
Draba stenoloba var. ramosa Alaska draba Annual, Perennial herb  
Echinochloa crus-pavonis var. macera Gulf cockspur grass Annual grass  
Echinochloa muricata var. microstachya Rough barnyardgrass Annual grass  
Eclipta prostrata False daisy Annual herb 1
Elatine brachysperma Short seed waterwort Annual, Perennial herb  
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 geniculata Bent spikerush Annual grass  
Eleocharis obtusa Broad spiked spikerush Annual grass 3
Emmenanthe penduliflora Whispering bells Annual herb 2
Emmenanthe penduliflora var. penduliflora Whispering bells Annual herb  
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 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. mexicana New mexico lovegrass Annual grass  
Eragrostis mexicana ssp. virescens Orcutt's eragrostis Annual grass  
Eragrostis pectinacea Tufted lovegrass Annual grass  
Eragrostis pectinacea var. pectinacea Tufted lovegrass Annual grass  
Eragrostis superba Wilman lovegrass Annual grass 1
Eremalche exilis White mallow Annual herb  
Eremocarpus setigerus Turkey mullein Annual herb 4
Eremothera boothii Booth's sun cup Annual herb  
Eremothera boothii ssp. boothii Booth's evening-primrose Annual herb  
Eremothera boothii ssp. condensata Clustered booth's desert primrose Annual herb  
Eremothera boothii ssp. decorticans Shredding evening-primrose Annual herb  
Eremothera boothii ssp. desertorum Booth's desert primrose Annual herb  
Eremothera refracta Narrow leaved primrose Annual herb  
Eriastrum diffusum Miniature wool star Annual herb 1
Eriastrum eremicum Desert woollystar Annual herb  
Eriastrum eremicum ssp. eremicum Desert wool star Annual herb  
Eriastrum filifolium Lavender eriastrum Annual herb  
Eriastrum hooveri Hoover's eriastrum Annual herb  
Eriastrum pluriflorum Many flowered eriastrum Annual herb  
Eriastrum pluriflorum ssp. albifaux Many flowered eriastrum Annual herb  
Eriastrum pluriflorum ssp. pluriflorum Many-flowered eriastrum Annual herb  
Eriastrum pluriflorum ssp. sherman-hoytiae Many flowered eriastrum Annual herb  
Eriastrum rosamondense Rosamond eriastrum Annual herb  
Eriastrum sapphirinum Sapphire eriastrum Annual herb 1
Eriastrum sapphirinum ssp. brevibracteatum Sapphire woollystar Annual herb  
Eriastrum sapphirinum ssp. dasyanthum Sapphire woollystar Annual herb  
Eriastrum sapphirinum ssp. sapphirinum Sapphire woollystar Annual herb  
Eriastrum signatum Maroon-spotted Woollystar Annual herb  
Eriastrum sparsiflorum Great basin eriastrum Annual herb  
Eriastrum tracyi Tracy's eriastrum Annual herb  
Eriastrum virgatum Virgate eriastrum Annual herb  
Erigeron canadensis Canada horseweed Annual herb  
Eriochloa acuminata Tapertip cupgrass Annual grass  
Eriochloa acuminata var. acuminata Taper tipped cupgrass Annual grass  
Eriogonum ampullaceum Mono buckwheat Annual herb  
Eriogonum angulosum Angled stem buckwheat Annual herb  
Eriogonum baileyi Bailey buckwheat Annual herb  
Eriogonum baileyi var. baileyi Bailey's buckwheat Annual herb  
Eriogonum baileyi var. praebens Bailey's buckwheat Annual herb  
Eriogonum brachyanthum Yellow buckwheat Annual herb  
Eriogonum brachypodum Parry's buckwheat Annual herb  
Eriogonum cithariforme Cithara buckwheat Annual herb  
Eriogonum cithariforme var. agninum Cithara buckwheat Annual herb  
Eriogonum cithariforme var. cithariforme Cithara buckwheat Annual herb  
Eriogonum clavatum Hoover's buckwheat Annual herb  
Eriogonum contiguum Reveal's buckwheat Annual herb  
Eriogonum covilleanum Coville's buckwheat Annual herb  
Eriogonum davidsonii Davidson buckwheat Annual herb 2
Eriogonum deflexum Flat topped buckwheat Annual herb  
Eriogonum deflexum var. baratum Flat topped buckwheat Annual herb  
Eriogonum elegans Elegant buckwheat Annual herb  
Eriogonum evanidum Vanishing wild buckwheat Annual herb  
Eriogonum foliosum Leafy buckwheat Annual herb  
Eriogonum glandulosum Glandular buckwheat Annual herb  
Eriogonum gracile Slender buckwheat Annual herb 3
Eriogonum gracile var. gracile Slender buckwheat Annual herb  
Eriogonum gracile var. incultum Slender buckwheat Annual herb  
Eriogonum gracillimum Rose and white buckwheat Annual herb 1
Eriogonum hirtiflorum Hairy flowered buckwheat Annual herb  
Eriogonum inerme Unarmed buckwheat Annual herb  
Eriogonum inerme var. hispidulum Unarmed buckwheat Annual herb  
Eriogonum inerme var. inerme Unarmed buckwheat Annual herb  
Eriogonum maculatum Angle stermed buckwheat Annual herb  
Eriogonum mohavense Western mojave buckwheat Annual herb  
Eriogonum molestum Pineland buckwheat Annual herb  
Eriogonum nidularium Whisk broom Annual herb  
Eriogonum nudum var. pubiflorum Hairy flowered buckwheat Annual herb  
Eriogonum ordii Fort mojave buckwheat Annual herb  
Eriogonum palmerianum Palmer's buckwheat Annual herb  
Eriogonum parishii Parish's buckwheat Annual herb 1
Eriogonum pusillum Yellow turban Annual herb  
Eriogonum reniforme Kidney leaf 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 thurberi Thurber eriogonum Annual herb  
Eriogonum trichopes Little desert buckwheat Annual herb  
Eriogonum trichopes var. hooveri Hoover's buckwheat Annual herb  
Eriogonum vimineum Wicker stemmed eriogonum Annual herb 2
Eriogonum viridescens Bright green buckwheat Annual herb  
Eriophyllum ambiguum Annual woolly sunflower Annual herb  
Eriophyllum ambiguum var. paleaceum Annual woolly sunflower Annual herb  
Eriophyllum mohavense Barstow woolly sunflower Annual herb  
Eriophyllum multicaule Many stemmed eriophyllum Annual herb  
Eriophyllum pringlei Pringle eriophyllum Annual herb  
Eriophyllum wallacei Wallace eriophyllum Annual herb  
Erodium macrophyllum Large leaved filaree Annual herb  
Erodium texanum Desert heron's bill Annual herb  
Eryngium aristulatum var. parishii San diego button celery Annual, Perennial herb  
Erythranthe androsacea Androsace monkeyflower Annual herb  
Erythranthe arenaria Annual herb  
Erythranthe breweri Brewer's monkeyflower Annual herb  
Erythranthe diffusa Palomar monkeyflower Annual herb  
Erythranthe floribunda Many flowered monkey flower Annual herb 1
Erythranthe glaucescens shield-bracted monkeyflower Annual herb  
Erythranthe grandis Annual herb  
Erythranthe guttata Yellow monkey flower Annual, Perennial herb (rhizomatous) 37
Erythranthe latidens Broad toothed monkeyflower Annual herb  
Erythranthe microphylla Small leaved monkeyflower Annual herb  
Erythranthe palmeri Palmer's monkeyflower Annual herb  
Erythranthe parishii Parish mimulus Annual herb  
Erythranthe rubella Red stemmed himulus Annual herb  
Erythranthe suksdorfii Suksdorf's monkeyflower Annual herb  
Eschscholzia caespitosa Tufted eschscholzia Annual herb 15
Eschscholzia californica California poppy Annual, Perennial herb 50
Eschscholzia glyptosperma Desert gold poppy Annual herb  
Eschscholzia hypecoides Leafy stemmed poppy Annual herb  
Eschscholzia lobbii Frying pans Annual herb 4
Eschscholzia minutiflora Coville s poppy Annual herb  
Eschscholzia minutiflora ssp. covillei Coville's pygmy poppy Annual herb  
Eschscholzia minutiflora ssp. minutiflora Pygmy poppy Annual herb  
Eschscholzia parishii Pygmy poppy Annual herb  
Eschscholzia ramosa Island poppy Annual herb  
Eucrypta chrysanthemifolia Spotted eucrypta Annual herb 2
Eucrypta chrysanthemifolia var. bipinnatifida Torrey eucrypta Annual herb  
Eucrypta chrysanthemifolia var. chrysanthemifolia Common eucrypta Annual herb  
Eulobus californicus California primrose Annual herb 1
Euphorbia abramsiana Abrams' spurge Annual herb  
Euphorbia crenulata Chinesecaps Annual, Perennial herb  
Euphorbia micromera Sonoran sandmat Annual herb  
Euphorbia ocellata Contura creek spurge Annual herb  
Euphorbia ocellata ssp. arenicola Dune spurge Annual, Perennial herb  
Euphorbia ocellata ssp. ocellata Valley spurge Annual, Perennial herb  
Euphorbia serpillifolia Thyme-leafed spurge Annual herb  
Euphorbia serpillifolia ssp. hirtula Hairy thyme leafed spurge Annual, Perennial herb  
Euphorbia serpillifolia ssp. serpillifolia Thyme leafed spurge Annual, Perennial herb  
Euphorbia setiloba Yuma sandmat Annual herb  
Euphorbia spathulata Reticulate seeded spurge Annual herb  
Eustoma exaltatum Catchfly prairie gentian Annual, Perennial herb  
Festuca microstachys Small fescue Annual grass  
Festuca octoflora Sixweeks grass Annual grass 5
Filago arizonica Arizona filago Annual herb  
Filago californica California filago Annual herb  
Filago depressa Dwarf filago Annual herb  
Galium aparine Cleavers Annual herb  
Galium bifolium Low mountain bedstraw Annual herb  
Galium triflorum Sweet bedstraw Annual herb  
Gaura coccinea Scarlet gaura Annual, Perennial herb  
Gayophytum decipiens Deceiving gayophytum Annual herb  
Gayophytum diffusum Spreading groundsmoke Annual herb  
Gayophytum diffusum ssp. diffusum Diffuse gayophytum 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 oligospermum Pinegrove gayophytum Annual herb  
Gayophytum racemosum Black foot gayophytum Annual herb  
Gayophytum ramosissimum Pinyon gayophytum Annual herb  
Geranium bicknellii Bicknell's geranium Annual herb  
Geranium carolinianum Carolina geranium Annual herb  
Gilia achilleifolia California gilia Annual herb 2
Gilia achilleifolia ssp. achilleifolia California gilia Annual herb  
Gilia achilleifolia ssp. multicaulis Many stemmed gilia Annual herb  
Gilia aliquanta Puff calyx gilia Annual herb  
Gilia aliquanta ssp. aliquanta Puff calyx gilia Annual herb  
Gilia aliquanta ssp. breviloba Puff calyx gilia Annual herb  
Gilia angelensis Chaparral gilia Annual herb  
Gilia australis Splendid gilia Annual herb  
Gilia austro-occidentalis Southwestern gilia Annual herb  
Gilia brecciarum Small gilia Annual herb  
Gilia brecciarum ssp. brecciarum Nevada gilia Annual herb  
Gilia brecciarum ssp. jacens Nevada gilia Annual herb  
Gilia brecciarum ssp. neglecta Nevada gilia Annual herb  
Gilia cana Showy gilia Annual herb  
Gilia cana ssp. triceps Showy gilia Annual herb  
Gilia capillaris Smooth leaved gilia Annual herb  
Gilia capitata Blue field gilia Annual herb 17
Gilia capitata ssp. abrotanifolia Ball gilia Annual herb  
Gilia capitata ssp. capitata Blue field gilia Annual herb 2
Gilia capitata ssp. staminea Globe gilia Annual herb  
Gilia caruifolia Broad flowered gilia Annual herb  
Gilia clivorum Purple spot gilia Annual herb  
Gilia diegensis Coastal gilia Annual herb  
Gilia inconspicua Shy gilia Annual herb  
Gilia jacens Nevada gilia Annual herb  
Gilia latiflora Broad flowered gilia Annual herb  
Gilia latiflora ssp. cuyamensis Cuyama gilia Annual herb  
Gilia latiflora ssp. davyi Broad flowered gilia Annual herb  
Gilia latiflora ssp. elongata Broad flowered gilia Annual herb  
Gilia latiflora ssp. latiflora Holly leaf gilia Annual herb  
Gilia latifolia Troadleaf gilia Annual herb  
Gilia leptalea Bridges' gilia Annual herb  
Gilia leptalea ssp. bicolor Purple throat gilia Annual herb  
Gilia leptantha Fine flower gilia Annual herb 5
Gilia leptantha ssp. leptantha Fine flower gilia Annual herb  
Gilia leptantha ssp. purpusii Purpus' gilia Annual herb 2
Gilia leptantha ssp. transversa Fine flower gilia Annual herb  
Gilia leptomeria Tooth leaved gilia Annual herb  
Gilia lottiae Lott's gilia Annual herb  
Gilia malior Scrub gilia Annual herb  
Gilia minor Little gilia Annual herb  
Gilia modocensis Modoc gilia Annual herb  
Gilia nevinii Nevin's gilia Annual herb 2
Gilia ochroleuca Volcanic gilia Annual herb  
Gilia ochroleuca ssp. bizonata Volcanic gilia Annual herb  
Gilia ochroleuca ssp. exilis Volcanic gilia Annual herb  
Gilia ochroleuca ssp. ochroleuca Volcanic gilia Annual herb  
Gilia ochroleuca ssp. vivida Volcanic gilia Annual herb  
Gilia scopulorum Rock gilia Annual herb  
Gilia sinuata Cinder gilia Annual herb  
Gilia splendens Splendid gilia Annual herb  
Gilia splendens ssp. grantii Grant's gilia Annual herb  
Gilia splendens ssp. splendens Splendid gilia Annual herb  
Gilia stellata Star gilia Annual herb  
Gilia tenuiflora Slender flowered gilia Annual herb  
Gilia tenuiflora ssp. tenuiflora Slender flowered gilia Annual herb  
Gilia tetrabreccia Mt. pinos gilia Annual herb  
Gilia transmontana Trans montane gilia Annual herb  
Gilia tricolor Bird's eyes Annual herb 14
Gilia tricolor ssp. diffusa Bird's eyes Annual herb  
Githopsis diffusa San gabriel bluecup Annual herb  
Githopsis diffusa ssp. diffusa Southern blue cup Annual herb  
Githopsis diffusa ssp. robusta San gabriel bluecup Annual herb  
Githopsis specularioides Venus' looking glass Annual herb  
Glyptopleura marginata Keysia Annual herb  
Glyptopleura setulosa Holy dandelion Annual herb  
Gnaphalium californicum California everlasting Annual, Perennial herb 12
Gnaphalium palustre Lowland cudweed Annual herb  
Gnaphalium purpureum Purple cudweed Annual, Perennial herb  
Gnaphalium stramineum Cotton batting Annual, Perennial herb 3
Goodmania luteola Golden goodmania Annual herb  
Guillenia lasiophylla Shaggy thelypod Annual herb  
Harpagonella palmeri Palmer's grapplinghook Annual herb  
Helianthus annuus Hairy leaved sunflower Annual herb 16
Helianthus exilis Serpentine sunflower Annual herb 3
Hemizonella minima Opposite leaved tarweed Annual herb  
Hemizonia congesta Hayfield tarweed Annual herb 5
Hemizonia congesta ssp. congesta Hayfield tarweed Annual herb 1
Hemizonia congesta ssp. leucocephala Hayfield tarplant Annual herb  
Hemizonia congesta ssp. luzulifolia Woodrush tarweed Annual herb 6
Hemizonia fasciculata Common tarweed Annual herb 5
Hemizonia increscens ssp. foliosa Leafy grassland tarweed Annual herb  
Hemizonia kelloggii Kellogg's tarweed Annual herb 1
Hemizonia pallida Kern tarweed Annual herb  
Hemizonia paniculata San diego tarweed Annual herb 2
Hemizonia parryi Parry's tarweed Annual herb 1
Hemizonia parryi ssp. australis Southern tarplant Annual herb 1
Hemizonia pungens Common spikeweed Annual herb 1
Hemizonia pungens ssp. laevis Smooth tarplant Annual herb  
Hemizonia pungens ssp. maritima Maritime spikeweed Annual herb  
Hemizonia pungens ssp. pungens Common tarweed Annual herb  
Hemizonia pungens ssp. septentrionalis Northern spikeweed Annual herb  
Hesperevax sparsiflora Few flowered evax Annual herb  
Hesperocnide tenella Western stinging nettle Annual herb  
Hesperolinon micranthum Small flower western flax Annual herb  
Heterocodon rariflorum Heterocodon Annual herb  
Heterodraba unilateralis Ladiestongue mustard Annual herb  
Heterotheca grandiflora Telegraph weed Annual, Perennial herb 4
Heterotheca psammophila Camphor weed Annual, Perennial herb 1
Heterotheca sessiliflora Golden aster Annual herb 9
Heterotheca subaxillaris ssp. latifolia Camphor weed Annual, Perennial herb  
Holocarpha heermannii Heermann's tarweed Annual herb  
Hordeum depressum Alkali barley Annual grass 3
Hordeum intercedens Vernal barley Annual grass 2
Isolepis cernua Low bulrush Annual grass 14
Johnstonella holoptera winged cryptantha Annual herb  
Juncus ambiguus Saline toad rush Annual grass  
Juncus bufonius Common toad rush Annual grass 6
Juncus bufonius var. bufonius Toad rush Annual grass  
Juncus bufonius var. congestus Clustered toad rush Annual grass 1
Juncus tiehmii Tiehm's rush Annual grass  
Laennecia coulteri Coulter's horseweed Annual herb  
Lagophylla ramosissima Common hareleaf Annual herb  
Lagophylla ramosissima ssp. ramosissima Common hareleaf Annual herb  
Langloisia setosissima Lilac sunbonnet Annual herb  
Langloisia setosissima ssp. punctata Lilac sunbonnet Annual herb  
Lastarriaea coriacea Leather spineflower Annual herb  
Lasthenia californica Goldfields Annual herb 12
Lasthenia californica ssp. californica California goldfields Annual herb 2
Lasthenia coronaria Royal goldfields Annual herb 2
Lasthenia glabrata Yellow rayed goldfields Annual herb 8
Lasthenia glabrata ssp. coulteri Goldfields Annual herb  
Lasthenia glabrata ssp. glabrata Yellow rayed goldfields Annual herb  
Lasthenia gracilis Needle goldfields Annual herb  
Lasthenia macrantha Perennial goldfields Annual herb 3
Lasthenia macrantha ssp. macrantha Perennial goldfields Annual herb 3
Lasthenia microglossa Small rayed goldfields Annual herb  
Lasthenia minor Coastal goldfields Annual herb  
Lasthenia platycarpha Alkali goldfields Annual herb  
Layia glandulosa White layia Annual herb 5
Layia hieracioides Hawkweed layia Annual herb 1
Layia pentachaeta Sierra tidy tips Annual herb 1
Layia pentachaeta ssp. albida White sierra tidy tips Annual herb 1
Layia platyglossa Tidy tips Annual herb 19
Lepidium acutidens Net pepper grass Annual, Perennial herb  
Lepidium densiflorum Common pepper grass Annual herb  
Lepidium densiflorum var. ramosum Common pepper grass Annual herb  
Lepidium dictyotum Net pepper grass Annual herb  
Lepidium dictyotum var. acutidens Net pepper grass Annual herb  
Lepidium dictyotum var. dictyotum Net pepper grass Annual herb  
Lepidium flavum Yellow pepper grass Annual herb  
Lepidium lasiocarpum Shaggyfruit pepperweed Annual herb  
Lepidium lasiocarpum ssp. lasiocarpum Shaggyfruit pepperweed Annual herb  
Lepidium lasiocarpum var. lasiocarpum Sand peppergrass Annual herb  
Lepidium latipes Dwarf pepper grass Annual herb  
Lepidium latipes var. latipes Dwarf pepper grass Annual herb  
Lepidium nitidum Shining pepper grass Annual herb 2
Lepidium nitidum var. howellii Howell's pepper grass Annual herb 2
Lepidium nitidum var. nitidum Shining pepper grass Annual herb  
Lepidium oblongum Veiny pepper grass Annual herb  
Lepidium oblongum var. insulare Veiny pepper grass Annual herb  
Lepidium ruderale Roadside pepperweed Annual herb  
Lepidium strictum Peppergrass Annual herb  
Lepidium virginicum Wild pepper grass Annual herb  
Lepidium virginicum ssp. menziesii Robinson's pepper grass Annual herb  
Lepidium virginicum ssp. virginicum Wild pepper grass Annual herb  
Lepidium virginicum var. medium Wild pepper grass Annual herb  
Lepidium virginicum var. pubescens Wild pepper grass Annual herb  
Lepidium virginicum var. robinsonii Robinson's pepper grass Annual herb  
Leptochloa fascicularis Sprangletop Annual grass  
Leptochloa filiformis Red sprangletop Annual grass  
Leptochloa fusca Sprangletop Annual grass  
Leptochloa fusca ssp. fascicularis Bearded sprangletop Annual grass  
Leptochloa fusca ssp. uninervia Mexican sprangletop Annual grass  
Leptochloa mucronata Mucronate sprangletop Annual grass  
Leptochloa panicea Mucronate sprangletop Annual grass  
Leptochloa panicea ssp. brachiata Mucronate sprangeltop Annual grass  
Leptochloa uninervia Sprangletop Annual grass  
Leptosiphon androsaceus False babystars Annual herb 1
Leptosiphon aureus Golden linanthus Annual herb  
Leptosiphon aureus ssp. aureus Golden linanthus Annual herb  
Leptosiphon aureus ssp. decorus Golden linanthus Annual herb  
Leptosiphon bicolor True babystars Annual herb  
Leptosiphon breviculus Mojave linanthus Annual herb  
Leptosiphon ciliatus Whiskerbrush Annual herb 1
Leptosiphon ciliatus ssp. ciliatus Whiskerbrush Annual herb  
Leptosiphon croceus Coast yellow leptosiphon Annual herb  
Leptosiphon liniflorus Narrowflower flaxflower Annual herb  
Leptosiphon nudatus Tehachapi linanthus Annual herb  
Leptosiphon parviflorus Variable linanthus Annual herb 1
Leptosiphon pygmaeus Pygmy linanthus Annual herb  
Leptosiphon pygmaeus ssp. continentalis Pygmy linanthus Annual herb  
Leptosiphon pygmaeus ssp. pygmaeus Pygmy leptosiphon Annual herb  
Leptosiphon rattanii Rattan's leptosiphon Annual herb  
Leptosyne bigelovii Bigelow coreopsis Annual herb 3
Leptosyne californica California coreopsis Annual herb  
Leptosyne calliopsidea Leafy stemmed coreopsis Annual herb 2
Leptosyne douglasii Douglas' coreopsis Annual herb 1
Lessingia germanorum San francisco lessingia Annual herb  
Lessingia glandulifera Valley vinegar weed Annual herb  
Lessingia glandulifera var. glandulifera Sticky lessingia Annual herb 1
Lessingia glandulifera var. peirsonii Peirson's lessingia Annual herb  
Lessingia lemmonii Lemmon's lessingia Annual herb  
Lessingia lemmonii var. lemmonii Lemmon's lessingia Annual herb  
Lessingia lemmonii var. peirsonii Peirson's lessingia Annual herb  
Lessingia lemmonii var. ramulosissima Twiggy lemmon's lessingia Annual herb  
Lessingia leptoclada Sierra lessingia Annual herb 1
Lessingia pectinata var. tenuipes Sticky lessingia Annual herb 1
Lilaea scilloides Flowering quillwort Annual herb (aquatic)  
Limosella acaulis Stemless mudwort Annual herb  
Linanthus androsaceus Common linanthus Annual herb 1
Linanthus aureus Golden gilia Annual herb  
Linanthus aureus ssp. aureus Golden linanthus Annual herb  
Linanthus bicolor True baby stars Annual herb  
Linanthus bigelovii Bigelow's linanthus Annual herb  
Linanthus breviculus Mojave linanthus Annual herb  
Linanthus ciliatus Whisker brush linanthus Annual herb 1
Linanthus concinnus San gabriel linanthus Annual herb  
Linanthus croceus Coast yellow leptosiphon Annual herb  
Linanthus dianthiflorus Fringed linanthus Annual herb 1
Linanthus dichotomus Evening snow Annual herb  
Linanthus dichotomus ssp. dichotomus Evening snow Annual herb  
Linanthus liniflorus Flax flowered linanthus Annual herb  
Linanthus nudatus Tehachapi linanthus Annual herb  
Linanthus orcuttii Orcutt's linanthus Annual herb  
Linanthus parryae Parry's linanthus Annual herb 2
Linanthus parviflorus Common linanthus Annual herb 1
Linanthus pygmaeus Pygmy linanthus Annual herb  
Linanthus pygmaeus ssp. continentalis Pygmy linanthus Annual herb  
Linanthus pygmaeus ssp. pygmaeus Typical pygmy linanthus Annual herb  
Linanthus rattanii Rattan's linanthus Annual herb  
Linaria canadensis Toad flax Annual, Perennial herb  
Linaria canadensis var. texana Toad flax Annual, Perennial herb  
Lindernia dubia False pimpernel Annual herb  
Lipocarpha occidentalis Western hemicarpha Annual grass  
Loeflingia squarrosa Spreading loeflingia Annual herb  
Loeflingia squarrosa var. artemisiarum Sagebrush loeflingia Annual herb  
Loeflingia squarrosa var. squarrosa California loeflingia Annual herb  
Loeseliastrum matthewsii Desert calico Annual herb 1
Loeseliastrum schottii Schott gilia Annual herb  
Logfia arizonica Arizona cottonrose Annual herb  
Logfia depressa Dwarf cottonrose Annual herb  
Logfia filaginoides California cottonrose 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 salsuginosus Coastal lotus Annual herb 2
Lotus salsuginosus var. brevivexillus Coastal lotus Annual herb  
Lotus salsuginosus var. salsuginosus Coastal lotus Annual herb  
Lotus strigosus Strigose lotus Annual herb 3
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 affinis Fleshy lupine Annual herb  
Lupinus arizonicus Arizona lupine Annual herb 7
Lupinus benthamii Spider lupine Annual herb 3
Lupinus benthamii var. benthamii Spider lupine Annual herb 3
Lupinus bicolor Lupine Annual, Perennial herb 15
Lupinus citrinus Fragrant lupine Annual herb  
Lupinus citrinus var. citrinus Orange lupine Annual herb  
Lupinus concinnus Bajada lupine Annual herb 3
Lupinus flavoculatus Yellow eyed lupine Annual herb  
Lupinus guadalupensis Guadalupe island lupine Annual herb  
Lupinus hirsutissimus Stinging lupine Annual herb 6
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. horizontalis Chick lupine Annual herb  
Lupinus microcarpus var. microcarpus Chick lupine Annual herb 3
Lupinus nanus Valley sky lupine Annual herb 11
Lupinus odoratus Mojave lupine Annual herb 2
Lupinus odoratus var. odoratus Mojave lupine Annual herb  
Lupinus sparsiflorus Coulter's lupine Annual herb 6
Lupinus sparsiflorus ssp. sparsiflorus Coulter's lupine Annual herb  
Lupinus stiversii Harlequin lupine Annual herb 2
Lupinus succulentus Arroyo lupine Annual herb 21
Lupinus truncatus Blunt leaved lupine Annual herb 4
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 elegans ssp. vernalis Spring common madia Annual herb 11
Madia elegans ssp. wheeleri Wheeler's common madia Annual herb 11
Madia exigua Small tarweed Annual herb  
Madia gracilis Gumweed Annual herb 1
Madia minima Little tarweed Annual herb  
Madia sativa Coastal tarweed Annual herb  
Malacothrix californica Desert dandelion Annual herb  
Malacothrix clevelandii Cleveland's malacothrix Annual herb  
Malacothrix coulteri Snake's head Annual herb 2
Malacothrix foliosa Leafy malacothrix Annual herb  
Malacothrix foliosa ssp. foliosa Leafy desertdandelion Annual herb  
Malacothrix foliosa ssp. polycephala Manyhead desertdandelion Annual herb  
Malacothrix glabrata Desert dandelion Annual herb 4
Malacothrix sonchoides Sow thistle malacothrix Annual herb 1
Matricaria discoidea Pineapple weed Annual herb 3
Matricaria occidentalis Valley mayweed Annual herb  
Meconella denticulata Small flowered meconella Annual herb  
Meconella oregana White fairypoppy Annual herb  
Mentzelia affinis Yellow comet Annual herb  
Mentzelia albicaulis White stemmed blazing star Annual herb 2
Mentzelia congesta Clustered blazing star Annual herb  
Mentzelia dispersa Scattered blazing star Annual herb  
Mentzelia eremophila Pinyon blazing star Annual, Perennial herb  
Mentzelia gracilenta Blazing star Annual herb  
Mentzelia jonesii Jones' blazing star Annual herb, Vine  
Mentzelia lindleyi Lindley's blazing star Annual herb 8
Mentzelia micrantha Small flowered stickleaf Annual herb 2
Mentzelia montana Mountain blazing star Annual herb  
Mentzelia nitens Shining blazing star Annual herb  
Mentzelia obscura Pacific blazing star Annual herb  
Mentzelia pectinata San joaquin blazing star Annual herb  
Mentzelia veatchiana Veatch's blazing star Annual herb  
Micropus californicus Q tips Annual herb 1
Micropus californicus var. californicus Slender cottonweed Annual herb  
Microseris douglasii Douglas' microseris Annual herb 1
Microseris douglasii ssp. douglasii Douglas' microseris Annual herb  
Microseris douglasii ssp. platycarpha Small flowered microseris Annual herb  
Microseris douglasii ssp. tenella Short scaled microseris Annual herb  
Microseris elegans Elegant silverpuffs 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 androsaceus Androsace monkeyflower Annual herb  
Mimulus bigelovii Bigelow mimulus Annual herb 2
Mimulus bigelovii var. bigelovii Bigelow's monkeyflower Annual herb  
Mimulus bigelovii var. cuspidatus Bigelow's monkeyflower Annual herb  
Mimulus bolanderi Bolander's monkeyflower Annual herb  
Mimulus brevipes Wide throated yellow monkeyflower Annual herb 2
Mimulus breweri Brewer's monkeyflower Annual herb  
Mimulus constrictus Dense fruited monkeyflower Annual herb  
Mimulus diffusus Palomar monkeyflower Annual herb  
Mimulus floribundus Many flowered monkey flower Annual herb 1
Mimulus fremontii Fremont's monkeyflower Annual herb  
Mimulus fremontii var. fremontii One sided monkeyflower Annual herb  
Mimulus glaucescens Shield bracted monkeyflower Annual herb  
Mimulus guttatus Yellow monkey flower Annual, Perennial herb (rhizomatous) 36
Mimulus johnstonii Johnston's monkeyflower Annual herb  
Mimulus latidens Broad toothed monkeyflower Annual herb  
Mimulus microphyllus Small leaved monkeyflower Annual herb 34
Mimulus palmeri Palmer's monkeyflower Annual herb  
Mimulus parishii Parish mimulus Annual herb 34
Mimulus pictus Calico monkeyflower Annual herb 3
Mimulus pilosus Snouted monkey flower Annual herb  
Mimulus rubellus Red stemmed himulus Annual herb  
Mimulus subsecundus One sided monkeyflower Annual herb  
Mimulus suksdorfii Suksdorf's monkeyflower Annual herb  
Mimulus traskiae Santa catalina island monkeyflower Annual herb  
Minuartia californica Sandwort Annual herb  
Minuartia douglasii Douglas' sandwort Annual herb  
Minuartia pusilla Annual sandwort Annual herb  
Monardella breweri Brewer's monardella Annual herb  
Monardella breweri ssp. breweri Brewer's monardella Annual herb  
Monardella breweri ssp. glandulifera Brewer's monardella Annual herb 1
Monardella breweri ssp. lanceolata Mustang mint Annual herb 1
Monardella breweri ssp. microcephala Brewer's monardella Annual herb 1
Monardella candicans Sierra monardella Annual herb  
Monardella exilis Mojave monardella Annual herb  
Monardella lanceolata Mustang mint Annual herb 1
Monardella lanceolata var. glandulifera Mustang monardella Annual herb  
Monardella lanceolata var. lanceolata Mustang monardella Annual herb  
Monardella saxicola Rock monardella Annual herb 1
Monardella sinuata Curly leaved monardella Annual herb  
Monardella undulata Curly leaved monardella Annual herb  
Monardella undulata ssp. arguelloensis Curly leaved monardella Annual herb  
Monardella undulata ssp. crispa Crisp monardella Annual herb 1
Monardella undulata ssp. undulata San luis obispo monardella Annual herb 1
Monolepis nuttalliana Nuttall's poverty weed Annual herb  
Monolepis spathulata Beaver monolepis Annual herb  
Monolopia lanceolata Common monolopia Annual herb 3
Monolopia major Cupped monolopia Annual herb  
Monoptilon bellidiforme Desert star Annual herb  
Montia dichotoma Dwarf miner's lettuce Annual herb  
Montia fontana Water montia Annual herb  
Mucronea californica California spineflower Annual herb 2
Mucronea perfoliata Perfoliate spineflower Annual herb  
Muhlenbergia appressa Appressed muhly Annual grass  
Muhlenbergia filiformis Slender muhly Annual, Perennial grass  
Muhlenbergia microsperma Littleseed muhly Annual grass 4
Myosurus minimus Little mouse tail Annual herb  
Myosurus minimus ssp. apus Little mouse tail Annual herb  
Najas guadalupensis Guadalupe water nymph Annual herb  
Najas guadalupensis ssp. guadalupensis Southern waternymph Annual herb  
Najas marina Marine water nymph Annual herb  
Nama californica California Fiddleleaf Annual herb  
Nama californicum California fiddleleaf Annual herb  
Nama demissa Purplemat Annual herb  
Nama demissa var. demissa Purplemat Annual herb  
Nama demissum Purple mat Annual herb  
Nama demissum var. demissum Desert purple mat Annual herb  
Nama densa Leafy Nama Annual herb  
Nama densum Purple mat Annual herb  
Nama hispida Annual herb  
Nama hispida var. spathulata Purplemat Annual herb  
Nama hispidum Bristly nama Annual herb  
Nama hispidum var. spathulatum Rough purple mat Annual herb  
Nama pusilla Small Leaf Nama Annual herb  
Nama pusillum Small leaved nama Annual herb  
Nama stenocarpa Mud nama Annual herb  
Nama stenocarpum Mud nama Annual, Perennial herb  
Navarretia atractyloides Holly leaf navarretia Annual herb  
Navarretia breweri Brewer's navarretia Annual herb  
Navarretia capillaris Miniature gilia Annual herb  
Navarretia fossalis Spreading navarretia Annual herb  
Navarretia hamata Hooked navarretia Annual herb  
Navarretia hamata ssp. hamata Hooked navarretia Annual herb  
Navarretia hamata ssp. leptantha Hooked navarretia Annual herb  
Navarretia jaredii Paso robles navarretia Annual herb  
Navarretia leptalea Bridges' pincushionplant Annual herb  
Navarretia leptalea ssp. bicolor Bridges' gilia Annual herb  
Navarretia mitracarpa Paso robles navarretia Annual herb  
Navarretia ojaiensis Ojai navarretia Annual herb  
Navarretia peninsularis Baja navarretia Annual herb  
Navarretia prostrata Prostrate navarretia Annual herb  
Navarretia pubescens Purple navarretia Annual herb  
Navarretia setiloba Piute mtns. navarretia Annual herb  
Nemacaulis denudata Woolly heads Annual herb  
Nemacaulis denudata var. denudata Coast woolly heads Annual herb  
Nemacladus breviflorus Short-flowered Long-flowered Threadplant Annual herb  
Nemacladus glanduliferus Thread plant Annual herb  
Nemacladus glanduliferus var. orientalis Eastern glandular nemacladus Annual herb  
Nemacladus gracilis Slender nemacladus Annual herb  
Nemacladus longiflorus Thread plant Annual herb  
Nemacladus longiflorus var. breviflorus Long flowered nemacladus Annual herb  
Nemacladus longiflorus var. longiflorus Long flowered nemacladus Annual herb  
Nemacladus orientalis Eastern glandular nemacladus Annual herb  
Nemacladus pinnatifidus Comb leaved nemacladus Annual herb  
Nemacladus ramosissimus Nuttall's nemacladus Annual herb  
Nemacladus rubescens Desert nemacladus Annual herb  
Nemacladus secundiflorus Secund nemacladus Annual herb  
Nemacladus secundiflorus var. robbinsii Robbins' nemacladus Annual herb  
Nemacladus sigmoideus Small flowered nemacladus Annual herb  
Nemophila maculata Five spot Annual herb 16
Nemophila menziesii Baby blue eyes Annual herb 17
Nemophila menziesii var. integrifolia Baby blue eyes Annual herb  
Nemophila menziesii var. menziesii Baby blue eyes Annual herb  
Nemophila parviflora Small flowered nemophila Annual herb  
Nemophila parviflora var. quercifolia Oak leaved nemophila Annual herb  
Nemophila pedunculata Meadow nemophila Annual herb  
Nemophila pulchella Eastwood's nemophila Annual herb  
Nemophila pulchella var. fremontii Fremont's nemophila Annual herb  
Nemophila pulchella var. gracilis Slender nemophila Annual herb  
Nemophila spatulata Sierra nemophila Annual herb  
Nicotiana attenuata Coyote tobacco Annual herb  
Nicotiana bigelovii var. wallacei Indian tobacco Annual herb  
Nicotiana clevelandii Cleveland's tobacco Annual herb  
Nicotiana quadrivalvis Indian tobacco Annual herb 2
Nicotiana quadrivalvis var. wallacei Wallace's tobacco Annual herb  
Nuttallanthus canadensis Canada toadflax Annual, Biennial herb  
Nuttallanthus texanus Blue toadflax Annual, Perennial herb  
Oenothera deltoides Desert lantern Annual herb 6
Oenothera deltoides ssp. cognata Desert lantern Annual herb  
Oenothera deltoides ssp. deltoides Desert lantern Annual herb  
Oenothera primiveris Yellow desert evening primrose Annual herb  
Oenothera primiveris ssp. bufonis Large yellow desert primrose Annual herb  
Oenothera primiveris ssp. primiveris Yellow desert evening primrose Annual herb  
Oligomeris linifolia Leaved cambess Annual herb  
Orcuttia californica California orcutt grass Annual grass  
Orobanche vallicola Valley broom rape Annual herb  
Osmadenia tenella Osmadenia Annual herb  
Oxalis pilosa Hairy wood sorrel Annual herb  
Oxytheca caryophylloides Chickweed oxytheca Annual herb  
Oxytheca parishii Parish's oxytheca Annual herb  
Oxytheca parishii var. abramsii Abrams's oxytheca Annual herb  
Oxytheca parishii var. cienegensis Cienega seca oxytheca Annual herb  
Oxytheca parishii var. goodmaniana Cushenbury oxytheca Annual herb  
Oxytheca parishii var. parishii Parish's oxytheca Annual herb  
Oxytheca perfoliata Roundleaf puncturebract Annual herb  
Oxytheca trilobata Three lobed oxytheca Annual herb  
Oxytheca watsonii Watson's oxytheca Annual herb  
Panicum capillare Old witch grass Annual grass 2
Panicum hirticaule Mexican panicgrass Annual grass  
Panicum hirticaule ssp. hirticaule Roughstalk witch grass Annual grass  
Panicum hirticaule var. hirticaule Mexican panicgrass Annual grass  
Papaver californicum Fire poppy Annual herb 2
Papaver heterophyllum Wind poppy Annual herb 4
Parietaria hespera Pelitory Annual herb  
Parietaria hespera var. californica California pellitory Annual herb  
Parietaria hespera var. hespera Pellitory Annual herb  
Pectocarya linearis Sagebrush combseed Annual herb  
Pectocarya linearis ssp. ferocula Slender comb seed Annual herb  
Pectocarya penicillata Winged pectocarya Annual herb  
Pectocarya platycarpa Broad nutted comb bur Annual herb  
Pectocarya recurvata Arch nutted comb bur Annual herb  
Pectocarya setosa Moth combseed Annual herb 1
Pentachaeta aurea Golden rayed pentachaeta Annual herb  
Pentachaeta exilis Slender pentachaeta Annual herb  
Pentachaeta lyonii Lyon's pentachaeta Annual herb  
Perityle emoryi Emory's rock daisy Annual herb 3
Persicaria lapathifolia Common knotweed Annual herb  
Petunia parviflora Wild petunia Annual herb  
Phacelia affinis Limestone phacelia Annual herb  
Phacelia austromontana Southern sierra phacelia Annual herb  
Phacelia bicolor Twocolor phacelia Annual herb  
Phacelia bicolor var. bicolor Two colored phacelia Annual herb  
Phacelia brachyloba Short lobed phacelia Annual herb 1
Phacelia campanularia Desert bells Annual herb 17
Phacelia campanularia ssp. vasiformis Desert bluebells Annual herb  
Phacelia campanularia var. vasiformis Desert bluebells Annual herb  
Phacelia cicutaria Caterpillar phacelia Annual herb 5
Phacelia cicutaria var. hispida Caterpillar phacelia Annual herb  
Phacelia cicutaria var. hubbyi Hubby's caterpillar phacelia Annual herb  
Phacelia ciliata Great valley phacelia Annual herb 1
Phacelia ciliata var. ciliata Great valley phacelia Annual herb  
Phacelia coerulea Sky blue phacelia Annual herb  
Phacelia congdonii Congdon's phacelia Annual herb  
Phacelia crenulata Notch leaved phacelia Annual herb 2
Phacelia crenulata var. ambigua Heliotrope phacelia Annual herb  
Phacelia crenulata var. crenulata Heliotrope phacelia Annual herb  
Phacelia cryptantha Small flowered phacelia Annual herb  
Phacelia curvipes Washoe phacelia Annual herb  
Phacelia davidsonii Davidson's phacelia Annual herb  
Phacelia distans Common phacelia Annual herb 3
Phacelia douglasii Douglas' phacelia Annual herb  
Phacelia douglasii var. douglasii Douglas' phacelia Annual herb  
Phacelia floribunda Many flowered phacelia Annual herb  
Phacelia fremontii Fremont's phacelia Annual herb 2
Phacelia grandiflora Giant flowered phacelia Annual herb 6
Phacelia hardhamiae Hardham's gray phacelia Annual herb  
Phacelia hubbyi Hubby's phacelia Annual herb  
Phacelia imbricata var. bernardina Bernadina Phacelia Annual herb  
Phacelia imbricata var. imbricata Imbricate Phacelia Annual herb  
Phacelia ivesiana Ives' phacelia Annual herb  
Phacelia lemmonii Lemmon's phacelia Annual herb  
Phacelia longipes Long stalk phacelia Annual herb  
Phacelia lyonii Lyon's phacelia Annual herb  
Phacelia minor Wild canterbury bells Annual herb 4
Phacelia mohavensis Mojave phacelia Annual herb  
Phacelia pachyphylla Thick leafed phacelia Annual herb  
Phacelia parryi Parry's phacelia Annual herb 3
Phacelia pedicellata Specter phacelia Annual herb  
Phacelia platyloba Broad lobed phacelia Annual herb  
Phacelia stellaris Brand's phacelia Annual herb  
Phacelia tanacetifolia Tansy leafed phacelia Annual herb 14
Phacelia viscida Sticky phacelia Annual herb 4
Phacelia viscida var. albiflora Sticky phacelia Annual herb  
Phacelia viscida var. viscida Sticky phacelia Annual herb  
Phalaris lemmonii Lemmon's canarygrass Annual grass  
Phlox gracilis Annual phlox Annual herb  
Pholistoma auritum Fiesta flower Annual herb  
Pholistoma auritum var. arizonicum Arizona pholistoma Annual herb  
Pholistoma auritum var. auritum Blue fiesta flower Annual herb  
Pholistoma membranaceum White fiesta flower Annual herb  
Pholistoma racemosum San diego fiesta flower Annual herb  
Physalis acutifolia Sharp leaf ground cherry Annual herb 1
Physalis angulata Cutleaf groundcherry Annual herb  
Plagiobothrys acanthocarpus Adobe allocarya Annual herb  
Plagiobothrys arizonicus Arizona popcorn flower Annual herb  
Plagiobothrys canescens Valley popcorn Annual herb  
Plagiobothrys canescens var. canescens Valley popcornflower Annual herb  
Plagiobothrys canescens var. catalinensis Catalina popcornflower Annual herb  
Plagiobothrys collinus Cooper's popcornflower Annual herb  
Plagiobothrys collinus var. californicus California popcorn flower Annual herb  
Plagiobothrys collinus var. fulvescens Rusty haired popcorn flower Annual herb  
Plagiobothrys collinus var. gracilis Graceful popcorn flower Annual herb  
Plagiobothrys distantiflorus California popcorn flower Annual herb  
Plagiobothrys fulvus Fulvous popcorn flower Annual herb  
Plagiobothrys jonesii Jones' popcorn flower Annual herb  
Plagiobothrys leptocladus Alkali plagiobothrys Annual herb  
Plagiobothrys nothofulvus Rusty haired popcorn flower Annual herb  
Plagiobothrys parishii Parish's popcorn flower Annual herb  
Plagiobothrys tenellus Slender popcorn flower Annual herb  
Planodes virginica Common rock cress Annual, Perennial herb  
Planodes virginicum Common rock cress Annual, Perennial herb  
Plantago bigelovii Long leaf plantain Annual herb  
Plantago elongata Coastal plantain Annual herb  
Plantago erecta California plantain Annual herb 6
Plantago ovata Desert plantain Annual herb 5
Plantago ovata var. fastigiata Desert plantain Annual herb  
Plantago ovata var. insularis Desert plantain Annual herb 5
Plantago patagonica Patagonia plantain Annual herb 1
Platystemon californicus Cream cups Annual herb 2
Plectritis ciliosa Long spurred plectritis Annual herb  
Plectritis ciliosa ssp. ciliosa Long spurred plectritis Annual herb  
Plectritis ciliosa ssp. insignis Showy plectritis Annual herb  
Pluchea odorata Salt marsh fleabane Annual, Perennial herb 10
Pluchea odorata var. odorata Salt marsh fleabane Annual, Perennial herb 3
Poa howellii Howell's blue grass Annual grass  
Pogogyne douglasii Douglas' pogogyne Annual herb  
Pogogyne douglasii ssp. parviflora Douglas's pogogyne Annual herb  
Polycarpon depressum California polycarpon Annual herb  
Polygonum douglasii Douglas' knotweed Annual herb  
Polygonum lapathifolium Common knotweed Annual herb  
Polygonum ramosissimum ssp. ramosissimum Yellow knotweed Annual herb  
Psathyrotes ramosissima Turtleback Annual, Perennial herb  
Pseudognaphalium californicum Ladies' tobacco Annual, Perennial herb 12
Psilocarphus brevissimus Woolly marbles Annual herb  
Psilocarphus brevissimus var. brevissimus Woolly heads Annual herb  
Psilocarphus tenellus Slender woolly heads Annual herb  
Psilocarphus tenellus var. tenellus Slender woolly heads Annual herb  
Pterostegia drymarioides Fairy mist Annual herb  
Puccinellia simplex California alkaligrass Annual grass  
Rafinesquia californica California chicory Annual herb  
Rafinesquia neomexicana Desert chicory Annual herb 1
Ranunculus hebecarpus Pubescent fruited buttercup Annual herb  
Rigiopappus leptocladus Wire weed Annual herb  
Rorippa curvipes Bluntleaf yellow cress Annual herb  
Rorippa curvipes var. truncata Blunt yellow cress Annual herb  
Rorippa curvisiliqua Curvepod yellow cress Annual, Perennial herb  
Rorippa palustris Bog 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  
Rorippa sphaerocarpa Round fruit yellow cress Annual herb  
Rumex fueginus Golden dock Annual, Perennial herb  
Rumex maritimus Golden dock Annual, Perennial herb  
Rumex persicarioides Golden dock Annual, Perennial herb  
Rumex violascens Mexican dock Annual, Perennial herb  
Sagina decumbens Trailing pearlwort Annual herb  
Sagina decumbens ssp. occidentalis Western pearlwort Annual herb  
Salicornia bigelovii Bigelow's pickleweed Annual herb  
Salicornia depressa Virginia glasswort Annual herb 7
Saltugilia australis Southern gilia Annual herb  
Saltugilia caruifolia Caraway leaved woodland gilia Annual herb  
Saltugilia splendens Splendid gilia Annual herb  
Saltugilia splendens ssp. grantii Grant's gilia Annual herb  
Saltugilia splendens ssp. splendens Splendid gilia Annual herb  
Salvia carduacea Thistle sage Annual herb 7
Salvia columbariae Chia sage Annual herb 11
Salvia columbariae var. columbariae Chia Annual herb  
Schoenoplectus saximontanus Rocky mountain bulrush Annual grass  
Scirpus cernuus Low clubrush Annual grass 14
Scirpus saximontanus Rocky mountain bulrush Annual grass  
Scribneria bolanderi Scribneria Annual grass  
Senecio aphanactis California groundsel Annual herb  
Senecio californicus California butterweed Annual herb  
Sibara filifolia Island rockcress Annual herb  
Sibara virginica Common rock cress Annual, Perennial herb  
Sidotheca caryophylloides Chickweed oxytheca Annual herb  
Sidotheca trilobata Three lobed oxytheca Annual herb  
Silene antirrhina Sleepy catch fly Annual herb  
Silene californica California indian pink Annual herb 2
Silene multinervia Fire following campion Annual herb  
Silene verecunda Dolores campion Annual herb  
Silene verecunda ssp. platyota San francisco campion Annual herb  
Solanum americanum White nightshade Annual, Perennial herb 1
Spergularia marina Salt sand spurry Annual herb 2
Spergularia salina Salt sandspurry Annual herb 2
Spermolepis lateriflora western bristly scaleseed Annual herb  
Stebbinsoseris heterocarpa Grassland stebbinsoseris Annual herb  
Stellaria nitens Shining chickweed Annual herb  
Stephanomeria diegensis San diego wreathplant Annual, Perennial herb  
Stephanomeria elata Santa barbara stephanomeria Annual herb  
Stephanomeria exigua Small wirelettuce Annual herb  
Stephanomeria exigua ssp. coronaria White plume wirelettuce Annual herb  
Stephanomeria exigua ssp. deanei Dean's stephanomeria Annual herb  
Stephanomeria exigua ssp. exigua Mitra Annual herb  
Stephanomeria virgata Twiggy wreath plant Annual herb 1
Stephanomeria virgata ssp. pleurocarpa Tall stephanomeria Annual herb  
Stephanomeria virgata ssp. virgata Tall milk aster Annual herb  
Streptanthella longirostris Long beaked twist flower Annual herb  
Streptanthus insignis San benito jewelflower Annual herb 2
Streptanthus tortuosus Jewelweed Annual, Perennial herb  
Streptanthus tortuosus var. tortuosus Mountain jewelflower Annual, Perennial herb  
Stutzia covillei Coville's orach Annual herb 1
Stylocline gnaphaloides Everlasting stylocline Annual herb  
Stylocline masonii Mason neststraw Annual herb  
Stylocline psilocarphoides Peck's stylocline Annual herb  
Stylomecon heterophylla Wind poppy Annual herb 4
Suaeda calceoliformis Horned sea blite Annual herb 1
Symphyotrichum frondosum Short rayed alkali aster Annual herb  
Symphyotrichum subulatum Eastern annual saltmarsh aster Annual herb  
Syntrichopappus fremontii Fremont's syntrichopappus Annual herb  
Syntrichopappus lemmonii Lemmon's syntrichopappus Annual herb  
Tetrapteron graciliflorum Hill sun cup Annual herb  
Tetrapteron palmeri Palmer's sun cup Annual herb  
Thysanocarpus conchuliferus Santacruz island lacepod Annual herb  
Thysanocarpus curvipes Common fringe pod Annual herb 2
Thysanocarpus curvipes ssp. amplectens Common fringe pod Annual herb  
Thysanocarpus curvipes ssp. curvipes Fringe Pod Annual herb  
Thysanocarpus curvipes ssp. eradiatus Fringe Pod Annual herb  
Thysanocarpus desertorum Narrow leaved lacepod Annual herb  
Thysanocarpus laciniatus Narrow leaved lacepod Annual herb  
Thysanocarpus laciniatus var. hitchcockii Narrow leaved lacepod Annual herb  
Thysanocarpus laciniatus var. laciniatus Narrow leaved lacepod Annual herb  
Thysanocarpus laciniatus var. rigidus Narrow leaved lacepod Annual herb  
Thysanocarpus rigidus Rigid fringepod Annual herb  
Tiquilia nuttallii Nuttall's coldenia Annual herb  
Trichostema austromontanum Southern bluecurls Annual herb  
Trichostema austromontanum ssp. austromontanum Southern bluecurls Annual herb  
Trichostema austromontanum ssp. compactum Hidden lake bluecurls Annual herb  
Trichostema lanceolatum Vinegarweed Annual herb 2
Trifolium albopurpureum Indian clover Annual herb 2
Trifolium albopurpureum var. albopurpureum Indian clover Annual herb 2
Trifolium albopurpureum var. dichotomum Clover Annual herb  
Trifolium bifidum Notch leaf clover Annual herb 2
Trifolium bifidum var. decipiens Notch leaf clover Annual herb 2
Trifolium ciliolatum Tree clover Annual herb 6
Trifolium depauperatum Dwarf sack clover Annual herb  
Trifolium depauperatum var. amplectens Pale sack clover Annual herb  
Trifolium depauperatum var. truncatum Dwarf sack clover Annual herb  
Trifolium dichotomum Branched indian clover Annual herb  
Trifolium fucatum Bull clover Annual herb 4
Trifolium gracilentum Pin point clover Annual herb 5
Trifolium gracilentum var. gracilentum Pin point clover Annual herb 5
Trifolium gracilentum var. palmeri Southern island clover Annual herb  
Trifolium macraei Macrae's clover Annual herb  
Trifolium microcephalum Small head clover Annual herb 4
Trifolium microdon Valparaiso clover Annual herb  
Trifolium obtusiflorum Creek clover Annual herb 4
Trifolium oliganthum Few flowered clover Annual herb 1
Trifolium palmeri Southern island clover Annual herb  
Trifolium variegatum Variegated clover Annual herb 1
Trifolium variegatum var. geminiflorum Small-flowered 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
Triglochin scilloides Flowering-quillwort Annual herb (aquatic)  
Triodanis biflora Venus looking glass Annual herb  
Tropidocarpum gracile Slender tropidocarpum Annual herb  
Uropappus lindleyi Silver puffs Annual herb 1
Verbena bracteata Bracted verbena Annual, Perennial herb  
Verbena menthifolia Mint leafed vervain Annual, Perennial herb  
Veronica peregrina Neckweed Annual herb  
Veronica peregrina ssp. xalapensis Speedwell Annual herb  
Vicia ludoviciana Louisiana vetch Annual herb  
Vicia ludoviciana ssp. ludoviciana Louisiana vetch Annual herb  
Vicia ludoviciana var. ludoviciana Slender vetch 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  
Vulpia octoflora Slender fescue Annual grass 5
Vulpia octoflora var. hirtella Six weeks fescue Annual grass 1
Vulpia octoflora var. octoflora Six weeks fescue Annual grass  
Xanthium strumarium Cocklebur Annual herb  
Yabea microcarpa Hedge parsley Annual herb  
Zeltnera davyi Davy's centaury Annual herb 1
Zeltnera exaltata Cancha lagua Annual herb  
Zeltnera namophila Spring-loving Centaury Annual herb  
Zeltnera venusta Charming centaury Annual herb  
  Lifeform: Biennial3 plants
Erigeron divergens Diffuse daisy Biennial, Perennial herb 4
Gnaphalium ramosissimum Pink everlasting Biennial herb 3
Pseudognaphalium ramosissimum Pink cudweed Biennial herb 3
  Lifeform: Perennial1591 plants
Abronia maritima Sticky sand verbena Perennial herb 5
Abronia umbellata Beach sand verbena Perennial herb 1
Abronia umbellata ssp. breviflora Pink sand verbena Perennial herb  
Abronia umbellata ssp. umbellata Sand verbena Perennial herb  
Abronia umbellata var. breviflora Pink sand-verbena Perennial herb  
Abronia umbellata var. umbellata Beach sand verbena Perennial herb  
Abutilon palmeri Palmer's abutilon Perennial herb 16
Achillea millefolium Yarrow Perennial herb 70
Achnatherum coronatum Giant needlegrass Perennial grass 7
Achnatherum diegoense San diego county needle grass Perennial grass  
Achnatherum hymenoides Indian rice grass Perennial grass 8
Achnatherum latiglume 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 parishii Parish's needlegrass Perennial grass  
Achnatherum speciosum Desert needlegrass Perennial grass 8
Achnatherum thurberianum Thurber stipa Perennial grass  
Acmispon argophyllus Silver birds foot trefoil Perennial herb  
Acmispon argophyllus var. adsurgens San clemente island bird's-foot trefoil Perennial herb  
Acmispon argophyllus var. argenteus Channel islands silver lotus Perennial herb 1
Acmispon argophyllus var. argophyllus Southern california silver lotus Perennial herb  
Acmispon argyraeus Canyon birdsfoot trefoil Perennial herb  
Acmispon argyraeus var. argyraeus Canyon lotus Perennial herb  
Acmispon glaber Deerweed Perennial herb 22
Acmispon glaber var. brevialatus Short winged deerweed Perennial herb  
Acmispon glaber var. glaber Deerweed Perennial herb  
Acmispon grandiflorus Large leaved lotus Perennial herb 4
Acmispon grandiflorus var. grandiflorus Chaparral lotus Perennial herb 1
Acmispon heermannii Heermann's lotus Perennial herb 4
Acmispon heermannii var. heermannii Heermann's lotus Perennial herb 1
Acmispon junceus Rush lotus Perennial herb 2
Acmispon nevadensis Sierra lotus Perennial herb  
Acmispon nevadensis var. davidsonii Davidson's sierra nevada lotus Perennial herb  
Acmispon nevadensis var. nevadensis Sierra nevada lotus Perennial herb  
Acmispon procumbens Silky california broom Perennial herb, Shrub  
Acmispon procumbens var. procumbens Silky california broom Perennial herb, Shrub  
Acourtia microcephala Sacapellote Perennial herb 1
Actaea rubra Baneberry Perennial herb 8
Agave deserti Desert agave Perennial herb 10
Ageratina occidentalis Western eupatorium Perennial herb 4
Agoseris grandiflora Giant mountain dandelion Perennial herb 3
Agoseris grandiflora var. grandiflora Giant mountain dandelion Perennial herb  
Agoseris retrorsa Spear leaved agoseris Perennial herb 1
Agrostis exarata Bentgrass Perennial grass 5
Agrostis idahoensis Colonial bentgrass Perennial grass 3
Agrostis pallens Diego bent grass Perennial grass 14
Agrostis perennans Upland bentgrass Perennial grass  
Agrostis scabra Rough bentgrass Perennial grass 4
Alisma plantago-aquatica Water plantain Perennial herb (aquatic) 5
Alisma triviale Northern water plantain Perennial herb (aquatic) 5
Allium amplectens Narrow leaved onion Perennial herb (bulb) 3
Allium bisceptrum Twincrest onion Perennial herb (bulb)  
Allium bisceptrum var. bisceptrum Twin crest onion Perennial herb (bulb)  
Allium burlewii Burlew's onion Perennial herb (bulb) 1
Allium campanulatum Dusky onion Perennial herb (bulb) 2
Allium diabolense Diablo onion Perennial herb (bulb)  
Allium fimbriatum Wild onion Perennial herb (bulb) 1
Allium fimbriatum var. fimbriatum Fringed onion Perennial herb (bulb)  
Allium fimbriatum var. mohavense Mojave onion Perennial herb (bulb)  
Allium haematochiton Red skinned onion Perennial herb (bulb) 5
Allium howellii Howell's onion Perennial herb (bulb) 1
Allium howellii var. clokeyi Mt. pinos onion Perennial herb (bulb)  
Allium hyalinum Glassy onion Perennial herb (bulb) 2
Allium lacunosum Pitted onion Perennial herb (bulb)  
Allium lacunosum var. davisiae Davis' pitted onion Perennial herb (bulb)  
Allium lacunosum var. lacunosum Pitted onion Perennial herb (bulb)  
Allium monticola San bernardino mountain onion Perennial herb (bulb)  
Allium munzii Munz's onion Perennial herb (bulb)  
Allium parishii Wild onion Perennial herb (bulb)  
Allium peninsulare Mexicali onion Perennial herb (bulb)  
Allium peninsulare var. peninsulare Mexicali onion Perennial herb (bulb)  
Allium praecox Early onion Perennial herb (bulb) 3
Allium serra Jeweled onion Perennial herb (bulb) 1
Allium validum Swamp onion Perennial herb (bulb) 5
Ambrosia chamissonis Silver beachweed Perennial herb 10
Ambrosia confertiflora Weak leaved burweed Perennial herb  
Ambrosia psilostachya Ragweed Perennial herb 6
Ambrosia pumila San diego ambrosia Perennial herb (rhizomatous) 3
Ambrosia salsola var. fasciculata Burrobrush Perennial herb  
Amsonia tomentosa Gray amsonia Perennial herb  
Anaphalis margaritacea Pearly everlasting Perennial herb 18
Andropogon glomeratus Bushy bluestem Perennial grass 2
Andropogon glomeratus var. pumilus Bushy bluestem Perennial grass  
Andropogon glomeratus var. scabriglumis Beardgrass Perennial grass  
Androstephium breviflorum Small flowered androstephium Perennial herb (bulb)  
Anemopsis californica Yerba mansa Perennial herb 32
Angelica capitellata Grayswamp whiteheads Perennial herb 2
Angelica lineariloba Poison angelica Perennial herb  
Angelica tomentosa Woolly angelica Perennial herb 1
Antennaria dimorpha Gray cushion pussytoes Perennial herb  
Antirrhinum thompsonii Perennial herb 4
Aphyllon californicum California orobanche Perennial herb (parasitic)  
Aphyllon californicum ssp. feudgei California broomrape Perennial herb (parasitic)  
Aphyllon californicum ssp. grande California broomrape Perennial herb (parasitic)  
Aphyllon cooperi Burroweed strangler Perennial herb (parasitic)  
Aphyllon fasciculatum Clustered broomrape Perennial herb (parasitic)  
Aphyllon parishii Parish's broom rape Perennial herb (parasitic)  
Aphyllon parishii ssp. brachylobum Short lobed broom rape Perennial herb (parasitic)  
Aphyllon parishii ssp. parishii Parish broomrape Perennial herb (parasitic)  
Aphyllon tuberosum Chaparral broomrape Perennial herb (parasitic)  
Aphyllon validum Rock creek broom rape Perennial herb (parasitic)  
Aphyllon validum ssp. validum Rock creek 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 blepharophylla Coast rock cress Perennial herb 7
Arabis breweri Brewer's rock cress Perennial herb 1
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 var. glabrata Mountain rock cress Perennial herb  
Arabis holboellii Holboell's rock cress Perennial herb  
Arabis holboellii var. retrofracta Backward splitting holboell's rock cress Perennial herb  
Arabis perennans Rock cress Perennial herb  
Arabis platysperma Broad seeded rock cress Perennial herb  
Arabis platysperma var. platysperma Broad seeded rock cress Perennial herb  
Arabis pulchra Prince s rock cress Perennial herb 2
Arabis pulchra var. gracilis Slender & beautiful rock cress Perennial herb  
Arabis pulchra var. pulchra Beautiful rock cress Perennial herb 2
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 sparsiflora Sicklepod rock cress Perennial herb 2
Arabis sparsiflora var. arcuata Elegant rockress Perennial herb  
Arabis sparsiflora var. californica California elegant rock cress Perennial herb 1
Arabis sparsiflora var. sparsiflora Elegant rock cress Perennial herb 2
Aralia californica California spikenard Perennial herb 18
Arceuthobium abietinum Fir 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 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 macradenia Sandwort Perennial herb  
Arenaria macradenia var. arcuifolia Desert sandwort Perennial herb  
Arenaria macradenia var. kuschei Forest camp sandwort Perennial herb  
Arenaria macradenia var. macradenia Desert sandwort Perennial herb  
Arenaria paludicola Marsh sandwort Perennial herb  
Argemone corymbosa Leafy prickly poppy Perennial herb 2
Aristida divaricata Poverty three awn Perennial grass  
Aristida purpurea Purple three awn Perennial grass 18
Aristida purpurea var. parishii Parish three awn Perennial grass  
Aristida ternipes Spidergrass Perennial grass 2
Aristida ternipes var. gentilis Spidergrass Perennial grass 2
Artemisia douglasiana California mugwort Perennial herb 35
Artemisia dracunculus Tarragon Perennial herb 11
Artemisia ludoviciana Silver wormwood Perennial herb 17
Artemisia ludoviciana ssp. albula White hugwort Perennial herb 1
Artemisia ludoviciana ssp. incompta Western mugwort Perennial herb  
Artemisia ludoviciana ssp. ludoviciana Silver wormwood Perennial herb 3
Artemisia suksdorfii Coastal mugwort Perennial herb 2
Arthrocnemum subterminale Parish's glasswort Perennial herb 4
Asarum caudatum Creeping wild ginger Perennial herb 41
Asclepias californica California milkweed Perennial herb 8
Asclepias californica ssp. greenei Greene's california milkweed Perennial herb 7
Asclepias eriocarpa Indian milkweed Perennial herb 9
Asclepias erosa Desert milkweed Perennial herb 3
Asclepias fascicularis narrow leaf milkweed Perennial herb 32
Asclepias vestita Woolly milkweed Perennial herb  
Asclepias vestita var. parishii Parish's woolly milkweed Perennial herb  
Aster ascendens Long leaved aster Perennial herb  
Aster bernardinus San bernardino aster Perennial herb  
Aster chilensis California aster Perennial herb 40
Aster greatae Greata's aster Perennial herb (rhizomatous)  
Aster lanceolatus ssp. hesperius Western lance leaf aster Perennial herb  
Astragalus asymmetricus San joaquin milk vetch Perennial herb 1
Astragalus bicristatus Crested milk vetch Perennial herb  
Astragalus brauntonii Braunton's milk vetch Perennial herb  
Astragalus coccineus Scarlet milk vetch Perennial herb 1
Astragalus crotalariae Salton milk vetch Perennial herb  
Astragalus douglasii Douglas's milkvetch Perennial herb  
Astragalus douglasii var. douglasii Douglas's milkvetch Perennial herb  
Astragalus douglasii var. parishii Parish's milk vetch Perennial herb  
Astragalus filipes Narrow pod locoweed Perennial herb  
Astragalus layneae Layne's milk vetch Perennial herb  
Astragalus lentiginosus var. antonius San antonio milk vetch Perennial herb  
Astragalus leucolobus Big bear valley woollypod Perennial herb  
Astragalus magdalenae Satiny milkvetch Perennial herb  
Astragalus magdalenae var. peirsonii Peirson's milk vetch Perennial herb  
Astragalus miguelensis San miguel island milkvetch Perennial herb  
Astragalus nevinii San clemente island milk vetch Perennial herb  
Astragalus nuttallii Loco weed Perennial herb 1
Astragalus oophorus Bladder milk vetch Perennial herb  
Astragalus oxyphysus Stanislaus milk vetch Perennial herb  
Astragalus pachypus Thick pod milk vetch Perennial herb  
Astragalus pachypus var. pachypus Thick pod milk vetch Perennial herb  
Astragalus palmeri Palmer locoweed Perennial herb  
Astragalus pomonensis Pomona milk vetch Perennial herb 4
Astragalus preussii Preuss's milk vetch Perennial herb  
Astragalus preussii var. laxiflorus Lancaster milk vetch Perennial herb  
Astragalus pulsiferae Pulsifer's milk vetch Perennial herb  
Astragalus pulsiferae var. coronensis Modoc plateau milk vetch Perennial herb  
Astragalus purshii Pursh's sheeppod Perennial herb 3
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 pycnostachyus Marsh milk vetch Perennial herb 1
Astragalus pycnostachyus var. lanosissimus Ventura marsh milk vetch Perennial herb 1
Astragalus rattanii var. rattanii Rattan's milk vetch Perennial herb  
Astragalus traskiae Trask's milkvetch Perennial herb  
Astragalus trichopodus Santa barbara milk vetch Perennial herb 3
Astragalus trichopodus var. lonchus Southern california milkvetch Perennial herb 1
Astragalus trichopodus var. phoxus Santa barbara milk vetch Perennial herb 1
Astragalus trichopodus var. trichopodus Santa barbara milk vetch Perennial herb 1
Atriplex californica California salt bush Perennial herb 1
Atriplex coulteri Coulter's saltbush Perennial herb  
Atriplex fruticulosa Ball saltbush Perennial herb  
Atriplex leucophylla Sea scale Perennial herb 7
Atriplex watsonii Watson's saltbush Perennial herb 3
Baccharis douglasii Salt marsh baccharis Perennial herb 14
Baccharis glutinosa Salt Marsh baccharis Perennial herb 27
Baileya multiradiata Desert marigold Perennial herb 20
Baileya multiradiata var. multiradiata Wild marigold Perennial herb 20
Balsamorhiza deltoidea Deltoid balsam root Perennial herb 2
Barbarea orthoceras Winter cress Perennial herb 1
Berula erecta Cut leaved water parsnip Perennial herb 1
Bidens laevis Bur marigold Perennial herb 4
Bloomeria crocea Golden stars Perennial herb 10
Bloomeria crocea var. aurea Common goldenstar Perennial herb  
Bloomeria crocea var. crocea Common goldenstar Perennial herb 1
Bloomeria crocea var. montana Mountain goldenstar Perennial herb  
Boechera arcuata Arching rockcress Perennial herb  
Boechera breweri Brewer's rock cress Perennial herb 1
Boechera californica California rockcress Perennial herb 1
Boechera elkoensis Elko rockcress Perennial herb  
Boechera perennans Perennial rockcress Perennial herb  
Boechera platysperma Pioneer rockcress Perennial herb  
Boechera pulchra Beautiful rockcress Perennial herb 2
Boechera repanda Yosemite rockcress Perennial herb  
Boechera retrofracta Reflexed rockcress Perennial herb  
Boechera sparsiflora Sicklepod rockcress Perennial herb 2
Boechera xylopoda Bigfoot hybrid rockcress Perennial herb  
Boerhavia coccinea Red boerhaavia 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)  
Bothriochloa barbinodis Beard grass Perennial grass 6
Boykinia occidentalis Western boykinia Perennial herb 6
Boykinia rotundifolia Round leaved boykinia Perennial herb 1
Brickellia californica California brickellia Perennial herb 15
Brickellia watsonii Watson's brickellia Perennial herb  
Brodiaea filifolia Thread leaved brodiaea Perennial herb (bulb) 2
Brodiaea jolonensis Jolon brodiaea Perennial herb 1
Brodiaea kinkiensis San clemente island brodiaea Perennial herb (bulb) 1
Brodiaea minor Low brodiaea Perennial herb 2
Brodiaea purdyi Purdy's brodiaea Perennial herb 2
Brodiaea terrestris Dwarf brodiaea Perennial herb 1
Brodiaea terrestris ssp. kernensis Kern dwarf brodiaea Perennial herb  
Bromus anomalus Nodding brome Perennial grass 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 carinatus var. maritimus Seaside brome Perennial grass 1
Bromus ciliatus Fringed bromegrass Perennial grass 2
Bromus grandis Tall brome Perennial grass  
Bromus hallii Hall's brome Perennial grass  
Bromus laevipes Narrow flowered brome Perennial grass 3
Bromus marginatus Mountain brome Perennial grass 6
Bromus maritimus Maritime brome Perennial grass 1
Bromus porteri Nodding brome Perennial grass 1
Bromus pseudolaevipes Southern chinook brome Perennial grass  
Bromus sitchensis Sitka brome Perennial grass 2
Bromus sitchensis var. carinatus California brome Perennial grass 20
Bromus sitchensis var. marginatus Mountain brome Perennial grass 6
Bromus sitchensis var. maritimus Maritime brome Perennial grass 1
Bromus sitchensis var. sitchensis Sitka brome, alaska brome Perennial grass  
Callitriche longipedunculata Longstock water-starwort Perennial herb  
Calochortus albus White fairy lantern Perennial herb 6
Calochortus albus var. albus Fairy lantern Perennial herb 1
Calochortus amabilis Golden fairy lantern Perennial herb 3
Calochortus amoenus Purple fairy lantern Perennial herb 2
Calochortus bruneaunis Pinyon mariposa Perennial herb 1
Calochortus catalinae Catalina mariposa Perennial herb (bulb) 3
Calochortus clavatus Club haired mariposa Perennial herb 1
Calochortus clavatus var. clavatus Club haired mariposa lily Perennial herb (bulb) 1
Calochortus clavatus var. gracilis Slender mariposa lily Perennial herb (bulb) 1
Calochortus clavatus var. pallidus Pale yellow mariposa Perennial herb 1
Calochortus coeruleus Blue star tulip Perennial herb 1
Calochortus concolor Golden bowl mariposa Perennial herb 1
Calochortus elegans Elegant star tulip Perennial herb  
Calochortus fimbriatus Late-flowered mariposa lily Perennial herb 1
Calochortus invenustus Plain mariposa Perennial herb 2
Calochortus kennedyi Desert mariposa Perennial herb 1
Calochortus kennedyi var. kennedyi Red mariposa Perennial herb  
Calochortus luteus Yellow mariposa Perennial herb 5
Calochortus palmeri Strangling mariposa Perennial herb 1
Calochortus palmeri var. palmeri Palmer's mariposa lily Perennial herb (bulb) 1
Calochortus panamintensis Panamint mariposa lily Perennial herb (bulb)  
Calochortus plummerae Plummer's mariposa lily Perennial herb (bulb) 1
Calochortus simulans San luis obispo mariposa lily Perennial herb (bulb) 2
Calochortus splendens Splendid mariposa Perennial herb 4
Calochortus striatus Alkali mariposa lily Perennial herb (bulb) 1
Calochortus venustus Butterfly mariposa lily Perennial herb 6
Calochortus weedii Weed's mariposa Perennial herb 1
Calochortus weedii var. intermedius Intermediate mariposa lily Perennial herb (bulb) 1
Calochortus weedii var. vestus Late flowered mariposa lily Perennial herb (bulb) 1
Calyptridium monospermum One seeded pussypaws Perennial herb  
Calystegia longipes Piute morning glory Perennial herb 1
Calystegia macrostegia Island morning glory Perennial herb, Vine 18
Calystegia macrostegia ssp. amplissima Island morning glory Perennial herb  
Calystegia macrostegia ssp. arida Southern california morning glory Perennial herb, Vine  
Calystegia macrostegia ssp. cyclostegia Coast morning glory Perennial herb, Vine 3
Calystegia macrostegia ssp. intermedia South coast morning glory Perennial herb, Vine  
Calystegia macrostegia ssp. macrostegia Island morning glory Perennial herb, Vine 2
Calystegia malacophylla Morning glory Perennial herb  
Calystegia malacophylla ssp. malacophylla Sierra morning glory Perennial herb  
Calystegia malacophylla ssp. pedicellata Jepson's morning glory Perennial herb  
Calystegia occidentalis Bush morning glory Perennial herb 2
Calystegia occidentalis ssp. fulcrata Sonora morning glory Perennial herb  
Calystegia occidentalis ssp. occidentalis Modoc morning glory Perennial herb  
Calystegia peirsonii Peirson's morning glory Perennial herb (rhizomatous) 1
Calystegia purpurata Smooth western morning glory Perennial herb 3
Calystegia purpurata ssp. purpurata Smooth western morning glory Perennial herb 1
Calystegia sepium Western hedge bindweed Perennial herb 1
Calystegia sepium ssp. binghamiae Santa barbara morning glory Perennial herb (rhizomatous)  
Calystegia soldanella Beach morning glory Perennial herb 3
Camissonia cheiranthifolia Beach evening primrose Perennial herb 10
Camissonia cheiranthifolia ssp. cheiranthifolia Beach evening primrose Perennial herb 1
Camissonia cheiranthifolia ssp. suffruticosa Shrubby beach primrose Perennial herb  
Camissonia ovata Sun cup Perennial herb 2
Camissonia subacaulis Long leaved suncup Perennial herb  
Camissoniopsis cheiranthifolia Beach evening-primrose Perennial herb 11
Camissoniopsis cheiranthifolia ssp. suffruticosa Shrubby beach primrose Perennial herb  
Cardamine californica milkmaids Perennial herb  
Cardamine californica var. californica Milk maids Perennial herb  
Cardamine californica var. integrifolia California toothwort Perennial herb  
Cardamine pensylvanica Pennsylvania bittercress Perennial herb  
Cardionema ramosissimum Sand mat Perennial herb 2
Carex abrupta Abrupt beaked sedge Perennial grass  
Carex alma Sedge Perennial grass  
Carex amplectens Clasping bract sedge Perennial grass 1
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 densa Sedge Perennial grass 8
Carex douglasii Douglas sedge Perennial grass 1
Carex dudleyi Dudley's sedge Perennial grass 8
Carex echinata Bristle fruit sedge Perennial grass 1
Carex fracta Fragile sheathed sedge Perennial grass 1
Carex garberi Garber's sedge Perennial grass  
Carex globosa Round fruit sedge Perennial grass 5
Carex hassei Hasse's sedge Perennial grass  
Carex heteroneura Variable nerved sedge Perennial grass  
Carex heteroneura var. heteroneura Vari nerved sedge Perennial grass  
Carex jonesii Jones' sedge Perennial grass  
Carex mariposana Mariposa sedge Perennial grass  
Carex multicaulis Forest sedge Perennial grass  
Carex nebrascensis Nebraska sedge Perennial grass 2
Carex nudata Torrent sedge Perennial grass 14
Carex occidentalis Western sedge Perennial grass  
Carex pellita Woolly sedge Perennial grass 7
Carex phaeocephala Mountain hare sedge Perennial grass  
Carex praegracilis Field sedge Perennial grass 28
Carex rossii Ross' sedge Perennial grass 1
Carex schottii Schott's sedge Perennial grass  
Carex scopulorum Mountain sedge Perennial grass  
Carex scopulorum var. bracteosa Bracted sedge Perennial grass  
Carex senta Rough sedge Perennial grass 3
Carex spissa San Diego sedge Perennial grass 14
Carex subfusca Brown sedge Perennial grass 8
Carex triquetra Triangular fruit sedge Perennial grass  
Carex tumulicola Split awn sedge Perennial grass 26
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. pinetorum Pine wavy leaf paintbrush Perennial herb  
Castilleja chromosa Desert paintbrush Perennial herb 3
Castilleja foliolosa Texas paintbrush Perennial herb 3
Castilleja gleasoni Mt. Gleason paintbrush Perennial herb  
Castilleja gleasonii Mt. gleason indian paintbrush Perennial herb (hemiparasitic)  
Castilleja grisea San clemente island indian paintbrush Perennial herb (hemiparasitic)  
Castilleja hololeuca Island white-felted paintbrush Perennial herb  
Castilleja inflata Indian paintbrush Perennial herb  
Castilleja lanata ssp. hololeuca White felted indian paintbrush Perennial herb (hemiparasitic)  
Castilleja linariifolia Desert paintbursh Perennial herb 2
Castilleja miniata Great red paintbrush Perennial herb 6
Castilleja miniata ssp. miniata Scarlet indian paintbrush Perennial herb  
Castilleja montigena Heckard's indian paintbrush Perennial herb (hemiparasitic)  
Castilleja parviflora Mountain paintbrush Perennial herb  
Castilleja peirsonii Peirson's paintbrush Perennial herb  
Castilleja plagiotoma Mojave indian paintbrush Perennial herb (hemiparasitic)  
Castilleja pruinosa Frosted paintbrush Perennial herb (hemiparasitic)  
Castilleja subinclusa Franciscan paint brush Perennial herb 1
Castilleja subinclusa ssp. franciscana Franciscan paintbrush Perennial herb  
Castilleja subinclusa ssp. subinclusa Long leaf paintbrush Perennial herb 1
Caulanthus major Slender wild cabbage Perennial herb  
Caulanthus major var. major Slender wild cabbage Perennial herb  
Cerastium arvense Meadow chickweed Perennial herb 1
Ceratophyllum demersum Hornwort Perennial herb 1
Chaenactis santolinoides Santolina chaenactis Perennial herb  
Chamaesyce albomarginata Rattlesnake weed Perennial herb  
Chamaesyce melanadenia Spurge Perennial herb  
Chamaesyce pediculifera Carrizo mountain spurge Perennial herb  
Chamaesyce polycarpa Small seeded spurge Perennial herb  
Chamaesyce polycarpa var. polycarpa Small seeded spurge Perennial herb  
Chamerion angustifolium Fireweed Perennial herb 14
Chamerion angustifolium ssp. circumvagum Fireweed Perennial herb 2
Chamerion latifolium Dwarf fireweed Perennial herb 3
Chenopodium californicum California goosefoot Perennial herb 1
Chimaphila menziesii Little prince's pine Perennial herb  
Chloracantha spinosa Spiny chloracantha Perennial herb  
Chlorogalum parviflorum Small flowered soaproot Perennial herb  
Chlorogalum pomeridianum Amole Perennial herb 17
Chlorogalum pomeridianum var. pomeridianum Common soaproot Perennial herb 2
Chrysothamnus paniculatus Blackbanded rabbit brush Perennial herb 1
Cicuta douglasii Western water hemlock Perennial herb 1
Cirsium brevistylum Indian thistle Perennial herb  
Cirsium mohavense Mohave thistle Perennial herb  
Cirsium neomexicanum Desert thistle Perennial herb  
Cirsium occidentale Western thistle Perennial herb 9
Cirsium occidentale var. californicum California thistle Perennial herb  
Cirsium occidentale var. compactum Compact cobwebby thistle Perennial herb  
Cirsium occidentale var. coulteri Coulter's thistle Perennial herb  
Cirsium occidentale var. occidentale Cobweb thistle Perennial herb 1
Cirsium occidentale var. venustum Venus thistle Perennial herb  
Cladium californicum Saw grass Perennial grass  
Claytonia lanceolata Western spring beauty Perennial herb  
Claytonia lanceolata var. peirsonii Peirson's spring beauty Perennial herb  
Claytonia peirsonii ssp. peirsonii Peirson's spring beauty Perennial herb  
Clematis lasiantha Pipestem Perennial herb, Vine 26
Clematis ligusticifolia Creek clematis Perennial herb, Vine 32
Clematis ligusticifolia var. californica California clematis Perennial herb, Vine  
Clematis ligusticifolia var. ligusticifolia Western white clematis Perennial herb, Vine 1
Clematis pauciflora Virgin's bower Perennial herb, Vine 1
Clinopodium douglasii Yerba buena Perennial herb 34
Clinopodium mimuloides Monkeyflower savory Perennial herb 7
Corallorhiza maculata Summer coral root Perennial herb  
Coreopsis maritima Sea dahlia Perennial herb 6
Corethrogyne filaginifolia Common sandaster Perennial herb 9
Corethrogyne filaginifolia var. californica California sandaster Perennial herb 3
Corethrogyne filaginifolia var. filaginifolia Common sandaster Perennial herb 12
Corethrogyne filaginifolia var. linifolia Del mar mesa sand aster Perennial herb  
Crepis acuminata Tall hawksbeard Perennial herb  
Crepis nana Dwarf hawksbeard Perennial herb  
Cressa truxillensis Alkali weed Perennial herb 3
Croton californicus Desert croton Perennial herb 5
Cucurbita foetidissima Missouri gourd Perennial herb, Vine 4
Cusickiella douglasii Alkali draba Perennial herb  
Cycladenia humilis Cycladenia Perennial herb 1
Cycladenia humilis var. venusta Showy cycladenia Perennial herb  
Cylindropuntia Xmunzii Munz's cholla Perennial herb (stem succulent) 2
Cylindropuntia acanthocarpa Buck horn cholla Perennial herb (stem succulent) 4
Cylindropuntia acanthocarpa var. acanthocarpa Buckhorn cholla Perennial herb (stem succulent) 3
Cylindropuntia californica California cholla Perennial herb (stem succulent) 5
Cylindropuntia californica var. parkeri Brownspined pricklypear Perennial herb (stem succulent) 1
Cylindropuntia munzii Munz's cholla Perennial herb (stem succulent) 2
Cymopterus deserticola Desert cymopterus Perennial herb  
Cyperus eragrostis Tall cyperus Perennial grass 12
Cyperus esculentus Nut grass Perennial grass  
Cyperus laevigatus Smooth cyperus Perennial grass  
Cyperus niger Brown cyperus Perennial grass  
Cyperus parishii Parish's flatsedge Perennial grass  
Danthonia californica California oatgrass Perennial grass 21
Datisca glomerata Durango root Perennial herb 2
Datura inoxia ! Pricklyburr Perennial herb 6
Datura wrightii Jimsonweed Perennial herb 16
Delphinium Xinflexum Perennial herb  
Delphinium cardinale Scarlet larkspur Perennial herb 7
Delphinium decorum Larkspur Perennial herb  
Delphinium depauperatum Few flowered larkspur Perennial herb  
Delphinium glaucum Sierra larkspur Perennial herb 3
Delphinium gracilentum Meadow larkspur Perennial herb  
Delphinium hansenii Hansen's larkspur Perennial herb  
Delphinium hansenii ssp. kernense Kern larkspur Perennial herb  
Delphinium hesperium Western larkspur Perennial herb  
Delphinium hesperium ssp. pallescens Western larkspur Perennial herb  
Delphinium inflexum Hybrid parry's larkspur Perennial herb 7
Delphinium parishii Parish's larkspur Perennial herb  
Delphinium parishii ssp. pallidum Pale parish's larkspur Perennial herb  
Delphinium parishii ssp. parishii Parish's larkspur Perennial herb  
Delphinium parishii ssp. subglobosum Intermediate larkspur Perennial herb  
Delphinium parryi San bernardino larkspur Perennial herb 1
Delphinium parryi ssp. maritimum Seaside larkspur Perennial herb  
Delphinium parryi ssp. parryi San bernardino larkspur Perennial herb  
Delphinium parryi ssp. purpureum Mt. pinos larkspur Perennial herb  
Delphinium patens Spreading larkspur Perennial herb  
Delphinium patens ssp. hepaticoideum Spreading larkspur Perennial herb  
Delphinium patens ssp. montanum Spreading larkspur Perennial herb  
Delphinium patens ssp. patens Spreading larkspur Perennial herb  
Delphinium recurvatum Recurved larkspur Perennial herb  
Delphinium variegatum Royal larkspur Perennial herb 1
Delphinium variegatum ssp. kinkiense San clemente island larkspur Perennial herb  
Delphinium variegatum ssp. thornei Thorne's royal larkspur Perennial herb  
Deschampsia atropurpurea Mountain hair grass Perennial grass 1
Deschampsia elongata Hairgrass Perennial grass 17
Descurainia adenophora White tansy mustard Perennial herb  
Descurainia obtusa Blunt tansymustard Perennial herb  
Descurainia obtusa ssp. adenophora White tansy mustard Perennial herb  
Dicentra chrysantha Golden eardrops Perennial herb 4
Dicentra formosa Pacific bleedinghearts Perennial herb 25
Dicentra formosa ssp. formosa Bleeding heart Perennial herb 2
Dicentra ochroleuca Yellow bleeding heart Perennial herb  
Dichelostemma capitatum Blue dicks Perennial herb 15
Dichelostemma capitatum ssp. capitatum Wild hyacinth Perennial herb 2
Dichelostemma ida-maia Firecracker flower Perennial herb 7
Dichelostemma multiflorum Many flowered brodiaea Perennial herb 6
Dichelostemma volubile Twining brodiaea Perennial herb 7
Dichondra occidentalis Western dichondra Perennial herb (rhizomatous) 2
Dieteria canescens Hoary aster Perennial herb 1
Dieteria canescens var. canescens Hoary aster Perennial herb  
Diplacus clevelandii Cleveland's bush monkeyflower Perennial herb 2
Dipterostemon capitatus Blue dicks Perennial herb 15
Dipterostemon capitatus ssp. capitatus Perennial herb 2
Disporum smithii Fairy lantern Perennial herb 6
Distichlis littoralis Shore grass Perennial grass 1
Distichlis spicata Salt grass Perennial grass 25
Dithyrea maritima Beach spectaclepod Perennial herb (rhizomatous)  
Dodecatheon clevelandii Padre's shooting star Perennial herb 8
Dodecatheon clevelandii ssp. clevelandii Cleveland's shooting star Perennial herb  
Dodecatheon clevelandii ssp. insulare Padre's shooting star Perennial herb 2
Dodecatheon clevelandii ssp. patulum Padre's shooting star Perennial herb  
Dodecatheon clevelandii ssp. sanctarum Padre's shooting star Perennial herb  
Dodecatheon jeffreyi Jeffrey's shooting star Perennial herb 3
Dodecatheon redolens Scented shooting star Perennial herb  
Draba corrugata Southern california draba Perennial herb  
Draba corrugata var. corrugata Southern california draba Perennial herb  
Drymocallis cuneifolia Perennial herb  
Drymocallis cuneifolia var. cuneifolia Wedgeleaf woodbeauty Perennial herb  
Drymocallis cuneifolia var. ewanii Ewan's cinquefoil Perennial herb  
Drymocallis glandulosa Sticky cinquefoil Perennial herb 11
Drymocallis glandulosa var. glandulosa Sticky cinquefoil Perennial herb  
Drymocallis glandulosa var. reflexa Sticky cinquefoil Perennial herb  
Drymocallis glandulosa var. viscida Sticky cinquefoil Perennial herb  
Drymocallis glandulosa var. wrangelliana Sticky cinquefoil Perennial herb  
Drymocallis lactea Perennial herb 1
Drymocallis lactea var. lactea Sierran woodbeauty Perennial herb  
Dudleya abramsii Abrams' dudleya Perennial herb 2
Dudleya alainae Banner dudleya Perennial herb 1
Dudleya blochmaniae Blochman's dudleya Perennial herb  
Dudleya blochmaniae ssp. blochmaniae Blochman's dudleya Perennial herb  
Dudleya caespitosa Sand lettuce Perennial herb 10
Dudleya cymosa Rock lettuce Perennial herb 19
Dudleya cymosa ssp. agourensis Canyon liveforever Perennial herb  
Dudleya cymosa ssp. crebrifolia San gabriel river dudleya Perennial herb  
Dudleya cymosa ssp. cymosa Canyon dudleya Perennial herb 3
Dudleya cymosa ssp. marcescens Marcescent dudleya Perennial herb  
Dudleya cymosa ssp. ovatifolia Santa monica mtns. dudleya Perennial herb  
Dudleya cymosa ssp. pumila Low canyon dudleya Perennial herb 2
Dudleya densiflora San gabriel mtns. dudleya Perennial herb 3
Dudleya edulis Fingertips Perennial herb 9
Dudleya greenei Greene's live forever Perennial herb 1
Dudleya hassei Hasse's dudleya Perennial herb 10
Dudleya lanceolata Southern california dudleya Perennial herb 14
Dudleya multicaulis Many stemmed dudleya Perennial herb  
Dudleya palmeri Palmer's dudleya Perennial herb 4
Dudleya pulverulenta Chalk dudleya Perennial herb 16
Dudleya pulverulenta ssp. pulverulenta California chalk lettuce Perennial herb 16
Dudleya saxosa Panamint dudleya Perennial herb 1
Dudleya saxosa ssp. aloides Desert dudleya Perennial herb 1
Dudleya virens Bright green dudleya Perennial herb 4
Dudleya virens ssp. hassei Bright green dudleya Perennial herb 10
Dudleya virens ssp. insularis Bright green dudleya Perennial herb  
Dudleya virens ssp. virens Bright green dudleya Perennial herb 1
Echinodorus berteroi Burhead Perennial herb (aquatic)  
Ehrendorferia chrysantha Golden eardrops Perennial herb 4
Ehrendorferia ochroleuca Yellow bleeding heart Perennial herb  
Eleocharis acicularis Needle spikerush Perennial grass 2
Eleocharis acicularis var. acicularis Needle spike rush Perennial grass  
Eleocharis bernardina Fewflower 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 parvula Small spikerush Perennial grass 2
Eleocharis pauciflora Few flowered spike rush Perennial grass  
Eleocharis quinqueflora Fewflower spikerush Perennial grass  
Eleocharis radicans Creeping spikerush Perennial grass  
Eleocharis rostellata Walking sedge Perennial grass 1
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 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 glaucus ssp. virescens Virginia wildrye Perennial grass  
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 pacificus Pacific wild rye Perennial grass  
Elymus spicatus Blue bunch wheat grass Perennial grass 7
Elymus stebbinsii 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  
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. angustifolium Hummingbird trumpet Perennial herb 21
Epilobium canum ssp. canum California fuchsia Perennial herb 11
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 ciliatum ssp. watsonii Willow herb Perennial herb  
Epilobium glaberrimum Smooth willowherb Perennial herb  
Epilobium glaberrimum ssp. glaberrimum Smooth willowherb Perennial herb  
Epilobium latifolium River beauty Perennial herb 3
Epipactis gigantea Stream orchid Perennial herb 16
Eremogone macradenia Mojave sandwort Perennial herb  
Eremogone macradenia var. arcuifolia Forest camp sandwort Perennial herb  
Eremogone macradenia var. macradenia Desert sandwort Perennial herb  
Eriastrum densifolium Giant eriastrum Perennial herb 4
Eriastrum densifolium ssp. austromontanum Southern mountain eriastrum Perennial herb 1
Eriastrum densifolium ssp. densifolium Giant eriastrum Perennial herb 2
Eriastrum densifolium ssp. elongatum Perennial wool star Perennial herb  
Eriastrum densifolium ssp. mohavense Perennial vool star Perennial herb 1
Ericameria paniculata Mojave rabbitbrush Perennial herb 1
Erigeron breweri Brewer's fleabane Perennial herb  
Erigeron breweri var. bisanctus Pious daisy Perennial herb  
Erigeron breweri var. breweri Brewer's daisy Perennial herb  
Erigeron breweri var. covillei Coville erigeron Perennial herb  
Erigeron breweri var. jacinteus San jacinto mtns. daisy Perennial herb (rhizomatous)  
Erigeron breweri var. porphyreticus Fleabane Perennial herb  
Erigeron foliosus Leafy daisy Perennial herb  
Erigeron foliosus var. foliosus Thread stemmed fleabane Perennial herb, Shrub  
Erigeron foliosus var. franciscensis San francisco leafy fleabane Perennial herb  
Erigeron foliosus var. hartwegii Hartweg's fleabane Perennial herb  
Erigeron glaucus Seaside daisy Perennial herb 41
Erigeron lobatus Lobed fleabane Perennial herb 4
Erigeron philadelphicus Philadelphia fleabane Perennial herb  
Erigeron pumilus Shaggy fleabane Perennial herb  
Eriodictyon parryi Poodle-dog bush Perennial herb 1
Eriodictyon sessilifolium sessile-leaved yerba stanta Perennial Herb  
Eriogonum callistum Tehachapi buckwheat Perennial herb  
Eriogonum crocatum Conejo buckwheat Perennial herb 14
Eriogonum elongatum Longstem buckwheat Perennial herb 3
Eriogonum elongatum var. elongatum Long stemmed buckwheat Perennial herb 3
Eriogonum grande Island buckwheat Perennial herb 14
Eriogonum grande var. grande Island buckwheat Perennial herb 2
Eriogonum grande var. timorum San nicolas island buckwheat Perennial herb 1
Eriogonum inflatum Desert trumpet Perennial herb  
Eriogonum inflatum var. inflatum Desert trumpet Perennial herb  
Eriogonum kennedyi Kennedy's buckwheat Perennial herb 5
Eriogonum kennedyi var. alpigenum Southern alpine buckwheat Perennial herb  
Eriogonum kennedyi var. austromontanum Southern mountain buckwheat Perennial herb  
Eriogonum kennedyi var. kennedyi Kennedy's buckwheat Perennial herb 1
Eriogonum latifolium Coast buckwheat Perennial herb 21
Eriogonum microtheca Slender buckwheat Perennial herb  
Eriogonum microtheca var. corymbosoides San bernardino wild buckwheat Perennial herb  
Eriogonum microtheca var. johnstonii Johnston's buckwheat Perennial herb  
Eriogonum oblongifolium Coast buckwheat Perennial herb 21
Eriogonum ovalifolium Oval leaved eriogonum Perennial herb 4
Eriogonum saxatile Rock buckwheat Perennial herb  
Eriogonum umbellatum Sulphur buckwheat Perennial herb 26
Eriogonum umbellatum var. bahiiforme Sulphur buckwheat Perennial herb  
Eriogonum umbellatum var. canifolium Sulphur buckwheat Perennial herb  
Eriogonum umbellatum var. dumosum Many flowered sulfur flower Perennial herb 3
Eriogonum umbellatum var. minus Alpine sulfur flowered buckwheat Perennial herb  
Eriogonum umbellatum var. modocense Sulphur flower buckwheat Perennial herb 2
Eriogonum umbellatum var. munzii Munz's 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. subaridum Desert sulfur buckwheat Perennial herb  
Eriogonum wrightii Wright's buckwheat Perennial herb, Shrub 6
Eriogonum wrightii var. membranaceum Wright s buckwheat Perennial herb, Shrub  
Eriogonum wrightii var. nodosum Wright s buckwheat Perennial herb, Shrub  
Eriogonum wrightii var. subscaposum Wright's buckwheat Perennial herb, Shrub 3
Eriogonum wrightii var. trachygonum Wright s buckwheat Perennial herb, Shrub  
Eriophyllum lanatum Wooly sunflower Perennial herb 27
Eriophyllum lanatum var. hallii Fort tejon woolly sunflower Perennial herb  
Eriophyllum latilobum San mateo woolly sunflower Perennial herb  
Eriophyllum staechadifolium Lizard tail Perennial herb 17
Eryngium aristulatum Jepson's button celery Perennial herb 2
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 insulare Island wallflower Perennial herb 2
Erysimum insulare ssp. insulare Island wallflower Perennial herb  
Erysimum insulare ssp. suffrutescens Suffrutescent wallflower Perennial herb 5
Erysimum suffrutescens Suffrutescent wallflower Perennial herb 5
Erythranthe cardinalis Cardinal monkey flower Perennial herb 41
Erythranthe moschata Musk monkeyflower Perennial herb 1
Erythranthe nasuta Perennial herb  
Eschscholzia californica ssp. californica California poppy Perennial herb 2
Eschscholzia procera Kernville poppy Perennial herb 3
Euphorbia albomarginata Rattlesnake sandmat Perennial herb  
Euphorbia incisa Mojave spurge Perennial herb  
Euphorbia lurida Woodland spurge Perennial herb  
Euphorbia melanadenia Red-gland spurge Perennial herb  
Euphorbia palmeri Woodland spurge Perennial herb  
Euphorbia pediculifera Carrizo mountain sandmat Perennial herb  
Euphorbia polycarpa Smallseed sandmat Perennial herb  
Euphorbia schizoloba Mojave spurge Perennial herb  
Euthamia occidentalis Western goldenrod Perennial herb 15
Extriplex californica California orach Perennial herb 1
Festuca californica California fescue Perennial grass 48
Festuca californica ssp. parishii Perennial grass  
Festuca californica var. parishii California fescue Perennial grass  
Festuca elmeri Coast fescue Perennial grass  
Festuca idahoensis Blue fescue Perennial grass 53
Festuca roemeri var. klamathensis Idaho fescue Perennial grass 48
Festuca rubra Red fescue Perennial grass 39
Fimbristylis thermalis Hot springs fimbristylis Perennial grass (rhizomatous)  
Fragaria crinita Beach strawberry Perennial herb 34
Fragaria vesca Wild strawberry Perennial herb 35
Frankenia salina Yerba reuma, alkali heath Perennial herb 12
Frasera albicaulis Whitestem frasera Perennial herb  
Frasera albicaulis var. nitida Whitestem frasera Perennial herb  
Frasera neglecta Pine green-gentian Perennial herb  
Frasera parryi Coahuila frasera Perennial herb  
Fritillaria affinis Checker lily Perennial herb (bulb) 7
Fritillaria agrestis Stinkbells Perennial herb (bulb) 1
Fritillaria atropurpurea Spotted mountain bells Perennial herb 2
Fritillaria biflora Chocolate lily Perennial herb 4
Fritillaria biflora var. biflora Chocolate lily Perennial herb (bulb) 4
Fritillaria lanceolata var. tristulis Marin checker lily Perennial herb 4
Fritillaria pinetorum Pine woods fritillary Perennial herb  
Fritillaria roderickii Roderick's fritillary Perennial herb (bulb) 1
Funastrum cynanchoides Fringed twinevine Perennial herb 2
Funastrum cynanchoides var. hartwegii Climbing milkweed Perennial herb 1
Galium andrewsii Phlox leaved bedstraw Perennial herb  
Galium andrewsii ssp. andrewsii Phlox leaved bedstraw Perennial herb  
Galium andrewsii ssp. intermedium Phlox leaved bedstraw Perennial herb  
Galium angustifolium Narrow leaved bedstraw Perennial herb 3
Galium angustifolium ssp. angustifolium Narrow leaved bedstraw Perennial herb  
Galium angustifolium ssp. foliosum Narrow leaved bedstraw Perennial herb  
Galium angustifolium ssp. gabrielense San antonio canyon bedstraw Perennial herb  
Galium angustifolium ssp. gracillimum Narrow leaved bedstraw Perennial herb  
Galium angustifolium ssp. nudicaule Naked stem bedstraw Perennial herb  
Galium argense Argus bedstraw Perennial herb  
Galium bolanderi Bolander's bedstraw Perennial herb  
Galium californicum California bedstraw Perennial herb  
Galium californicum ssp. flaccidum California bedstraw Perennial herb  
Galium catalinense Santa catalina island bedstraw Perennial herb  
Galium cliftonsmithii Santa barbara bedstraw Perennial herb  
Galium hallii Nodding bedstraw Perennial herb  
Galium hilendiae Hilend's bedstraw Perennial herb  
Galium jepsonii Jepson's bedstraw Perennial herb (rhizomatous)  
Galium johnstonii Johnston's bedstraw Perennial herb  
Galium nuttallii Climbing bedstraw Perennial herb  
Galium nuttallii ssp. insulare Nuttall's island bedstraw Perennial herb  
Galium nuttallii ssp. nuttallii Climbing bedstraw Perennial herb  
Galium parishii Parish's bedstraw Perennial herb  
Galium trifidum Three petaled bedstraw Perennial herb  
Galium trifidum ssp. columbianum Threepetal bedstraw Perennial herb  
Galium trifidum var. pacificum Bedstraw Perennial herb  
Galvezia speciosa Island snapdragon Perennial herb, Shrub 32
Gamochaeta ustulata Featherweed Perennial herb  
Geranium californicum California geranium Perennial herb 1
Geranium concinnum California mountain geranium Perennial herb 1
Geranium richardsonii Richardson's geranium Perennial herb  
Glycyrrhiza lepidota Lichorice Perennial herb 1
Gnaphalium canescens Everlasting cudweed Perennial herb 3
Gnaphalium canescens ssp. beneolens Cudweed Perennial herb 1
Gnaphalium canescens ssp. microcephalum White everlasting Perennial herb 1
Gnaphalium canescens ssp. thermale Small headed cudweed Perennial herb  
Gnaphalium leucocephalum White headed cudweed Perennial herb  
Grindelia camporum Gumweed Perennial herb 13
Grindelia camporum var. bracteosa Bract gumweed Perennial herb 12
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 hirsutula var. hirsutula Hairy gumweed Perennial herb  
Grindelia stricta Gumweed Perennial herb 28
Grindelia stricta var. platyphylla Gumplant Perennial herb 17
Gutierrezia californica Matchweed, snakeweed Perennial herb, Shrub 6
Helenium bigelovii Bigelow's sneezeweed Perennial herb 8
Helenium puberulum Sneezeweed Perennial herb 9
Helianthus californicus California sunflower Perennial herb 4
Helianthus gracilentus Slender sunflower Perennial herb 5
Helianthus inexpectatus Newhall sunflower Perennial herb  
Helianthus nuttallii Nuttall's sunflower Perennial herb  
Helianthus nuttallii ssp. parishii Los angeles sunflower Perennial herb (rhizomatous)  
Heliotropium curassavicum Chinese parsley Perennial herb 8
Heliotropium curassavicum var. oculatum Seaside heliotrope Perennial herb 2
Heracleum lanatum Cow parsnip Perennial herb 20
Heracleum maximum Common cow parsnip Perennial herb 20
Hesperocallis undulata Desert lily Perennial herb 1
Heterotheca sessiliflora ssp. echioides Bristly goldenaster Perennial herb  
Heterotheca sessiliflora ssp. fastigiata Erect goldenaster Perennial herb  
Heterotheca sessiliflora ssp. sessiliflora False goldenaster Perennial herb  
Heterotheca subaxillaris Camphorweed Perennial herb 1
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 abramsii Abrams's alumroot Perennial herb (rhizomatous)  
Heuchera caespitosa Urn-flowered alumroot Perennial herb 5
Heuchera cespitosa Tufted alumroot Perennial herb 3
Heuchera cylindrica Roundleaf alumroot Perennial herb 8
Heuchera elegans Urn flowered alumroot Perennial herb (rhizomatous) 6
Heuchera maxima Island alumroot Perennial herb (rhizomatous) 27
Heuchera micrantha Alum root Perennial herb 34
Heuchera rubescens Pink alumroot Perennial herb 6
Hieracium albiflorum White flowered hawkweed Perennial herb 1
Hieracium argutum Hawkweed Perennial herb  
Hieracium horridum Shaggy hawkweed Perennial herb  
Hoffmannseggia glauca Hoffmanseggia Perennial herb  
Hoita macrostachya California hemp Perennial herb 6
Hooveria parviflora Perennial herb  
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
Hordeum jubatum ssp. jubatum Foxtail barley, squirreltail barley Perennial grass  
Horkelia cuneata Wedge leaved horkelia Perennial herb 5
Horkelia cuneata ssp. cuneata Coast horkelia Perennial herb 1
Horkelia cuneata ssp. puberula Coast horkelia Perennial herb  
Horkelia cuneata ssp. sericea Wedge leaved horkelia Perennial herb 1
Horkelia cuneata var. cuneata Wedge leaved horkelia Perennial herb 1
Horkelia cuneata var. puberula Mesa horkelia Perennial herb  
Horkelia cuneata var. sericea Kellogg's horkelia Perennial herb 1
Horkelia parryi Parry's horkelia Perennial herb 1
Horkelia rydbergii Rydberg's 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  
Hulsea heterochroma Red rayed hulsea Perennial herb 1
Hulsea vestita Pumice hulsea Perennial herb  
Hulsea vestita ssp. gabrielensis San gabriel mtns. sunflower Perennial herb  
Hulsea vestita ssp. parryi Parry's hulsea Perennial herb  
Hulsea vestita ssp. vestita Pumice hulsea Perennial herb  
Hydrocotyle ranunculoides Marsh pennywort Perennial herb 2
Hydrocotyle umbellata Marsh pennywort Perennial herb  
Hydrocotyle verticillata Whorled marsh pennywort Perennial herb 2
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
Imperata brevifolia Satintail Perennial grass 2
Ipomopsis tenuifolia Slender leaved ipomopsis Perennial herb 2
Iris douglasiana Douglas iris Perennial herb 52
Iris macrosiphon Ground iris Perennial herb 8
Iris missouriensis Western blue flag Perennial herb 25
Iris munzii Munz's iris Perennial herb (rhizomatous) 3
Isopyrum occidentale Western false rue anemone Perennial herb  
Iva axillaris Povertyweed Perennial herb  
Iva axillaris ssp. robustior Poverty weed Perennial herb  
Iva hayesiana San diego marsh elder Perennial herb 13
Ivesia argyrocoma Silver haired ivesia Perennial herb  
Ivesia argyrocoma var. argyrocoma Silver-haired ivesia Perennial herb  
Ivesia santolinoides Mouse tail ivesia Perennial herb  
Jaumea carnosa Marsh jaumea Perennial herb 7
Jepsonia malvifolia Island jepsonia Perennial herb  
Juncus acutus Spiny rush Perennial grass (rhizomatous) 13
Juncus acutus ssp. leopoldii Wire grass Perennial grass (rhizomatous) 2
Juncus balticus Wire rush Perennial grass 19
Juncus balticus ssp. ater Baltic rush Perennial grass 2
Juncus bufonius var. occidentalis Round fruited toad rush Perennial grass  
Juncus cooperi Cooper's rush Perennial grass  
Juncus covillei Coville's rush Perennial grass  
Juncus covillei var. obtusatus Coville's rush Perennial grass  
Juncus dubius Mariposa rush Perennial grass 1
Juncus duranii Duran's rush Perennial grass (rhizomatous)  
Juncus effusus Common bog rush Perennial grass 44
Juncus effusus ssp. austrocalifornicus Common bog rush Perennial grass 1
Juncus ensifolius Sword leaved rush Perennial grass 7
Juncus macrophyllus Rush Perennial grass 1
Juncus mexicanus Mexican rush Perennial grass 10
Juncus nevadensis Sierra rush Perennial grass 1
Juncus nodosus Knotted rush Perennial grass (rhizomatous) 1
Juncus occidentalis Slender juncus Perennial grass 4
Juncus orthophyllus Straight leaved rush Perennial grass 1
Juncus oxymeris Pointed rush Perennial grass 1
Juncus patens Rush Perennial grass 48
Juncus phaeocephalus Brown headed rush Perennial grass 9
Juncus phaeocephalus var. paniculatus Rush Perennial grass  
Juncus phaeocephalus var. phaeocephalus Brown headed rush Perennial grass  
Juncus rugulosus Wrinkled rush Perennial grass  
Juncus saximontanus Rocky mountain rush Perennial grass  
Juncus tenuis Slender rush Perennial grass 9
Juncus textilis Basket rush Perennial grass 7
Juncus torreyi Torrey's rush Perennial grass 5
Juncus xiphioides Iris leaved rush Perennial grass 15
Kochia americana Red sage Perennial herb  
Kochia californica Mojave red sage Perennial herb  
Koeleria macrantha June grass Perennial grass 29
Kopsiopsis strobilacea California ground-cone Perennial herb (parasitic)  
Lasthenia californica ssp. macrantha Perennial goldfields Perennial herb 3
Lathyrus splendens Pride of california Perennial herb  
Lathyrus sulphureus Sulpher pea Perennial herb  
Lathyrus vestitus Common pacific pea Perennial herb 7
Lathyrus vestitus var. alefeldii San diego pea Perennial herb 2
Lathyrus vestitus var. ochropetalus Bolander's pacific pea Perennial herb  
Lathyrus vestitus var. vestitus Hillside pea Perennial herb 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 trisulca Star duckweed Perennial herb  
Lemna valdiviana Duckweed Perennial herb  
Lepidium fremontii Desert pepper grass Perennial herb 4
Lepidium fremontii var. fremontii Desert pepper grass Perennial herb 4
Leptosyne maritima Sea dahlia Perennial herb 6
Lessingia filaginifolia Common california aster Perennial herb 17
Lessingia filaginifolia var. californica Beach aster Perennial herb 10
Lessingia filaginifolia var. filaginifolia Common california aster Perennial herb 9
Lewisia brachycalyx Short sepaled lewisia Perennial herb 2
Lewisia nevadensis Sierra lewisia Perennial herb 2
Lewisia rediviva Bitter root Perennial herb 4
Lewisia rediviva var. minor Bitter root Perennial herb  
Leymus cinereus Giant wild rye Perennial grass 8
Leymus condensatus Giant rye grass Perennial grass 34
Leymus pacificus Gould's rye grass Perennial grass  
Leymus triticoides Alkali rye Perennial grass 30
Lilium humboldtii Humboldt's lily Perennial herb 8
Lilium humboldtii ssp. humboldtii Humboldt's lily Perennial herb (bulb) 1
Lilium humboldtii ssp. ocellatum Humboldt lily Perennial herb (bulb)  
Lilium kelleyanum Kelley's lily Perennial herb  
Lilium parryi Lemon lily Perennial herb (bulb) 6
Limonium californicum Marsh rosemary Perennial herb 11
Lithophragma affine Common woodland star Perennial herb 1
Lithophragma bolanderi Hillstar Perennial herb  
Lithophragma cymbalaria Mission star Perennial herb  
Lithophragma heterophyllum Woodland star Perennial herb 1
Lithophragma maximum San clemente island woodland star Perennial herb  
Lithophragma parviflorum Pink woodland star Perennial herb 1
Lithophragma tenellum Woodland star Perennial herb  
Lobelia cardinalis Cardinalflower Perennial herb 16
Lobelia cardinalis var. pseudosplendens Cardinal flower Perennial herb 16
Lobelia dunnii Dunn's lobelia Perennial herb 11
Lobelia dunnii var. serrata Dunn's lobelia Perennial herb 6
Lomatium californicum Celery weed Perennial herb 4
Lomatium dasycarpum Lace parsnip Perennial herb 4
Lomatium dasycarpum ssp. dasycarpum Woolly fruited lomatium Perennial herb  
Lomatium dissectum Fern leaved lomatium Perennial herb 3
Lomatium dissectum var. multifidum Fern leaved lomatium Perennial herb 1
Lomatium insulare San nicolas island lomatium Perennial herb 1
Lomatium lucidum Shiny lomatium Perennial herb  
Lomatium macrocarpum Large fruited lomatium Perennial herb 2
Lomatium mohavense Mohave wild parsely Perennial herb  
Lomatium multifidum Fern leaved lomatium Perennial herb 1
Lomatium nevadense Nevada lomatium Perennial herb  
Lomatium nevadense var. parishii Parish's lomatium Perennial herb  
Lomatium rigidum Stiff lomatium Perennial herb  
Lomatium utriculatum Hog fennel Perennial herb 2
Lomatium vaginatum Sheathed lomatium Perennial herb  
Lotus argophyllus Silver birds foot trefoil Perennial herb 1
Lotus argophyllus var. adsurgens San clemente island bird's foot trefoil Perennial herb  
Lotus argophyllus var. argenteus Channel islands silver lotus Perennial herb 1
Lotus argophyllus var. argophyllus Southern california silver lotus Perennial herb  
Lotus argyraeus Canyon birdsfoot trefoil Perennial herb  
Lotus crassifolius Broad leaved lotus Perennial herb 7
Lotus crassifolius var. crassifolius Broad leaved lotus Perennial herb 2
Lotus grandiflorus Large leaved lotus Perennial herb 3
Lotus grandiflorus var. grandiflorus Chaparral lotus Perennial herb 1
Lotus heermannii Heermann's lotus Perennial herb 3
Lotus heermannii var. heermannii Heermann's lotus Perennial herb 1
Lotus junceus Rush lotus Perennial herb 2
Lotus nevadensis Sierra lotus Perennial herb  
Lotus nevadensis var. davidsonii Davidson's sierra nevada 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 procumbens Silky california broom Perennial herb, Shrub  
Lotus procumbens var. procumbens Silky california broom Perennial herb, Shrub  
Lotus scoparius Deerweed Perennial herb 22
Lotus scoparius var. brevialatus Short winged deerweed Perennial herb  
Lotus scoparius var. scoparius Deerweed Perennial herb  
Ludwigia peploides ssp. peploides Floating water primrose Perennial herb  
Ludwigia repens Creeping water primrose Perennial herb  
Lupinus adsurgens Drew's silky lupine Perennial herb  
Lupinus adsurgens var. adsurgens Drew's silky lupine Perennial herb  
Lupinus adsurgens var. lilacinus Drew's silky lupine Perennial herb  
Lupinus albicaulis White stemmed lupine Perennial herb 8
Lupinus albifrons var. johnstonii interior bush lupine Perennial herb  
Lupinus andersonii Anderson's lupine Perennial herb  
Lupinus antoninus Anthony peak 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 breweri Brewer's lupine Perennial herb 2
Lupinus breweri var. breweri Brewer's lupine Perennial herb  
Lupinus breweri var. grandiflorus Showy brewer's lupine Perennial herb  
Lupinus elatus Silky lupine Perennial herb  
Lupinus formosus Western lupine Perennial herb 6
Lupinus formosus var. formosus Western lupine Perennial herb  
Lupinus formosus var. robustus Giant western lupine Perennial herb  
Lupinus hyacinthinus Hyacinth lupine Perennial herb  
Lupinus latifolius Broad leaf lupine Perennial herb 9
Lupinus latifolius var. columbianus Broad leaved lupine Perennial herb  
Lupinus latifolius var. latifolius Broad leaf lupine Perennial herb  
Lupinus latifolius var. parishii Parish's lupine Perennial herb 2
Lupinus lepidus Tidy lupine Perennial herb 1
Lupinus peirsonii Peirson's lupine Perennial herb  
Lupinus polyphyllus Bog lupine Perennial herb 26
Lupinus polyphyllus var. burkei Large leaved lupine Perennial herb 5
Lupinus rivularis Riverbank lupine Perennial herb 8
Luzula comosa Hairy wood rush Perennial grass 4
Luzula comosa var. laxa Hairy wood rush Perennial grass 3
Lycopus americanus Bugleweed Perennial herb 2
Lythrum californicum Common loosestrife Perennial herb  
Machaeranthera canescens Hoary aster Perennial herb 1
Machaeranthera canescens var. canescens Hoary aster Perennial herb  
Maianthemum stellatum Starry false lily of the valley Perennial herb 17
Malacothrix incana Dunedelion Perennial herb 2
Malacothrix saxatilis Cliff aster Perennial herb 6
Malacothrix saxatilis var. arachnoidea Carmel valley cliff aster Perennial herb (rhizomatous)  
Malacothrix saxatilis var. commutata South coast range malacothrix Perennial herb  
Malacothrix saxatilis var. implicata Cliff malacothrix Perennial herb 1
Malacothrix saxatilis var. saxatilis Cliff aster Perennial herb 1
Malacothrix saxatilis var. tenuifolia Short leaved cliff aster Perennial herb 1
Malvella leprosa Alkali mallow Perennial herb 3
Marah fabacea California man-root Perennial herb, Vine 5
Marah fabaceus Manroot Perennial herb, Vine 5
Marah fabaceus var. agrestis Wild cucumber Perennial herb, Vine 3
Marah fabaceus var. fabaceus California manroot Perennial herb, Vine 3
Marah horrida Sierra man-root Perennial herb, Vine  
Marah horridus Sierran wild cucumber Perennial herb, Vine  
Marah macrocarpa Chilicothe Perennial herb, Vine 5
Marah macrocarpus Southern wild cucumber Perennial herb, Vine 5
Marah macrocarpus var. macrocarpus Southern wild cucumber Perennial herb, Vine 1
Marah macrocarpus var. major Southern wild cucumber Perennial herb, Vine 1
Marah oregana Coast man-root Perennial herb, Vine 3
Marah oreganus Manroot Perennial herb, Vine 3
Melica californica California melic Perennial grass 25
Melica frutescens Tall melica Perennial grass 1
Melica harfordii Harford's melic Perennial grass 2
Melica imperfecta Coast range melic Perennial grass 20
Melica stricta Nodding melica Perennial grass  
Melica stricta var. albicaulis Nodding melica Perennial grass  
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
Mentzelia ravenii Grass blazingstar Perennial herb  
Micranthes californica Greene's saxifrage Perennial herb  
Microseris sylvatica Sylvan scorzonella Perennial herb  
Mimulus cardinalis Cardinal monkey flower Perennial herb 41
Mimulus clevelandii Cleveland's bush monkeyflower Perennial herb 2
Mimulus glabratus Roundleaf monkeyflower Perennial herb (rhizomatous)  
Mimulus moschatus Musk monkeyflower Perennial herb 1
Mimulus moschatus var. moschatus Muskflower Perennial herb  
Minuartia nuttallii Nuttall sandwort Perennial herb  
Minuartia nuttallii ssp. gracilis Nuttall's sandwort Perennial herb  
Minuartia nuttallii var. gracilis Nuttall sandwort Perennial herb  
Mirabilis bigelovii Bigelow's desert four o'clock Perennial herb 3
Mirabilis bigelovii var. bigelovii Pale stemmed four o clock Perennial herb 1
Mirabilis bigelovii var. retrorsa Wishbone Perennial herb  
Mirabilis californica Wishbone bush Perennial herb 12
Mirabilis greenei Greene's four o'clock Perennial herb  
Mirabilis laevis Desert wishbone bush Perennial herb 3
Mirabilis laevis var. crassifolia California four o'clock Perennial herb 12
Mirabilis laevis var. laevis Desert wishbone bush Perennial herb  
Mirabilis laevis var. retrorsa Wishbone bush Perennial herb  
Mirabilis laevis var. villosa Wishbone bush Perennial herb 3
Mirabilis multiflora Giant four o'clock Perennial herb 8
Mirabilis multiflora var. pubescens Desert four o'clock Perennial herb  
Monanthochloe littoralis Salt cedar Perennial grass 1
Monardella australis Southern mountain monardella Perennial herb  
Monardella australis ssp. australis Southern mountain monardella Perennial herb  
Monardella australis ssp. cinerea Gray monardella Perennial herb (rhizomatous)  
Monardella australis ssp. jokerstii Jokerst's monardella Perennial herb  
Monardella cinerea Gray monardella Perennial herb (rhizomatous)  
Monardella glauca Grey monardella Perennial herb 1
Monardella hypoleuca White leaf monardella Perennial herb  
Monardella hypoleuca ssp. hypoleuca White leaf monardella Perennial herb  
Monardella hypoleuca ssp. intermedia White leaf monardella Perennial herb  
Monardella linoides Narrow leaved monardella Perennial herb 7
Monardella linoides ssp. anemonoides Narrow leaved monardella Perennial herb 1
Monardella linoides ssp. erecta Narrow leaved monardella Perennial herb  
Monardella linoides ssp. linoides Flax like monardella Perennial herb 1
Monardella linoides ssp. oblonga Flax like monardella Perennial herb (rhizomatous)  
Monardella linoides ssp. stricta Flax like monardella Perennial herb  
Monardella macrantha Hummingbird monardella Perennial herb 12
Monardella macrantha ssp. hallii Hall's monardella Perennial herb (rhizomatous)  
Monardella macrantha ssp. macrantha Hummingbird monardella Perennial herb  
Monardella odoratissima Mountain monardella Perennial herb 21
Monardella odoratissima ssp. glauca Mountain mint Perennial herb 1
Monardella odoratissima ssp. parvifolia Matted mountain monardella Perennial herb  
Monardella sheltonii Shelton's coyote mint Perennial herb 1
Monardella viridis Green monardella Perennial herb  
Monardella viridis ssp. saxicola Rock monardella Perennial herb (rhizomatous) 1
Monardella viridis ssp. viridis Green monardella Perennial herb (rhizomatous)  
Muhlenbergia asperifolia Scratchgrass Perennial grass 1
Muhlenbergia californica California muhly Perennial grass (rhizomatous)  
Muhlenbergia richardsonis Richardson's muhly Perennial grass  
Muhlenbergia rigens Deergrass Perennial grass 63
Muilla coronata Crowned muilla Perennial herb (bulb)  
Muilla maritima Common muilla Perennial herb 1
Myriophyllum sibiricum Siberian water milfoil Perennial herb (aquatic)  
Nassella cernua Nodding needlegrass Perennial grass 23
Nassella lepida Small flowered stipa Perennial grass 25
Nassella pulchra Purple needlegrass Perennial grass 42
Nasturtium gambelii Gambel's yellowcress Perennial herb  
Nasturtium officinale Watercress Perennial herb (aquatic) 3
Nicolletia occidentalis Western nicolletia Perennial herb  
Nitrophila occidentalis Western nitrophila Perennial herb  
Nolina bigelovii Bigelow's nolina Perennial herb 3
Nolina parryi Parry's nolina Perennial herb 7
Nuphar polysepala Rocky mountain pond-lily Perennial herb (aquatic) 3
Oenanthe sarmentosa Water parsley Perennial herb 8
Oenothera caespitosa Fragrant evening primrose Perennial herb 8
Oenothera californica California evening primrose Perennial herb 6
Oenothera californica ssp. avita California evening primrose Perennial herb  
Oenothera californica ssp. californica California evening primrose Perennial herb  
Oenothera cespitosa Fragrant evening-primrose Perennial herb 8
Oenothera deltoides ssp. howellii Antioch dunes evening primrose Perennial herb 3
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 longissima Long evening primrose Perennial herb  
Oenothera suffrutescens Wild honeysuckle, linda tarde 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  
Opuntia californica var. californica Snake cholla Perennial herb (stem succulent) 5
Opuntia munzii Munz's cholla Perennial herb (stem succulent) 2
Oreonana vestita Woolly mountain parsley Perennial herb  
Orobanche bulbosa Chaparral broomrape Perennial herb (parasitic)  
Orobanche californica California orobanche Perennial herb (parasitic)  
Orobanche californica ssp. feudgei California broomrape Perennial herb (parasitic)  
Orobanche californica ssp. grandis California broomrape Perennial herb (parasitic)  
Orobanche californica ssp. grayana Gray's california broom rape Perennial herb (parasitic)  
Orobanche cooperi Burroweed strangler Perennial herb (parasitic)  
Orobanche fasciculata Clustered broomrape Perennial herb (parasitic)  
Orobanche parishii Parish's broom rape Perennial herb (parasitic)  
Orobanche parishii ssp. brachyloba Short lobed broom rape Perennial herb (parasitic)  
Orobanche parishii ssp. parishii Parish broomrape Perennial herb (parasitic)  
Orobanche uniflora Naked broom rape Perennial herb (parasitic)  
Orobanche valida Rock creek broom rape Perennial herb (parasitic)  
Orobanche valida ssp. valida Rock creek broomrape Perennial herb (parasitic)  
Osmorhiza berteroi Sweet cicely Perennial herb 3
Osmorhiza brachypoda California sweet cicely Perennial herb  
Osmorhiza chilensis Western sweet cicely Perennial herb 3
Oxalis albicans Hairywood sorrell Perennial herb  
Oxalis albicans ssp. californica Californica wood sorrel Perennial herb  
Oxalis albicans ssp. pilosa Hairy wood sorrel Perennial herb  
Oxalis californica Californica wood sorrel Perennial herb  
Oxalis corniculata ssp. pilosa Hairy wood sorrel Perennial herb  
Oxalis trilliifolia Three leaf woodsorrel Perennial herb  
Oxypolis occidentalis Western cow bane Perennial herb  
Oxytropis borealis Boreal locoweed Perennial herb  
Oxytropis borealis var. australis Boreal locoweed Perennial herb  
Oxytropis oreophila Mountain oxytrope Perennial herb  
Oxytropis oreophila var. oreophila Round leaf loco weed Perennial herb  
Packera breweri Brewer's ragwort Perennial herb  
Packera ionophylla Tehachapi ragwort Perennial herb  
Packera multilobata Lobeleaf 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  
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 palustris Marsh grass of parnassus Perennial herb  
Paspalum distichum Knot grass Perennial grass 2
Pedicularis densiflora Indian warrior Perennial herb 1
Pedicularis semibarbata Pine woods lousewort Perennial herb  
Pediomelum californicum Indian breadroot Perennial herb  
Penstemon Xdubius Hybrid penstemon Perennial herb  
Penstemon caesius San bernardino beardtongue Perennial herb  
Penstemon centranthifolius Scarlet bugler Perennial herb 18
Penstemon eatonii Eaton firecracker Perennial herb 28
Penstemon grinnellii Grinnell's beardtongue Perennial herb 9
Penstemon grinnellii var. grinnellii Grinnell's beardtongue Perennial herb  
Penstemon grinnellii var. scrophularioides Grinnell's beardtongue Perennial herb  
Penstemon heterophyllus Foothill penstemon Perennial herb 40
Penstemon heterophyllus var. australis Southern foothill penstemon Perennial herb  
Penstemon heterophyllus var. heterophyllus Foothill penstemon Perennial herb 1
Penstemon labrosus San gabriel beardtongue Perennial herb 2
Penstemon laetus Mountain blue penstemon Perennial herb 1
Penstemon laetus var. laetus Mountain blue penstemon Perennial herb  
Penstemon palmeri Palmer's penstemon Perennial herb 21
Penstemon palmeri var. palmeri Palmer's penstemon Perennial herb  
Penstemon rattanii Rattan's beardtongue Perennial herb  
Penstemon rostriflorus Bridge's penstemon Perennial herb 8
Penstemon speciosus Showy penstemon Perennial herb 13
Penstemon spectabilis Showy penstemon Perennial herb 25
Penstemon spectabilis var. spectabilis Showy penstemon Perennial herb  
Penstemon spectabilis var. subviscosis Showy penstemon Perennial herb  
Penstemon spectabilis var. subviscosus Showy penstemon Perennial herb  
Perideridia californica California yampah Perennial herb 4
Perideridia gairdneri Gairdner's yampah Perennial herb 2
Perideridia parishii Parish's yampah Perennial herb  
Perideridia parishii ssp. latifolia Parish's yampah Perennial herb  
Perideridia pringlei Adobe yampah Perennial herb  
Persicaria amphibia Water smartweed Perennial herb (aquatic) 2
Persicaria hydropiperoides Water pepper Perennial herb  
Persicaria punctata Dotted smartweed Perennial herb 4
Petalonyx thurberi Sandpaper plant Perennial herb 2
Petalonyx thurberi ssp. thurberi Thurber's sandpaper plant Perennial herb  
Phacelia californica Rock phacelia Perennial herb 17
Phacelia cinerea Ashy phacelia Perennial herb 3
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 imbricata Imbricate phacelia Perennial herb 3
Phacelia imbricata ssp. imbricata Imbricate phacelia Perennial herb  
Phacelia imbricata ssp. patula Imbricate phacelia Perennial herb  
Phacelia imbricata var. patula Imbricate phacelia Perennial herb  
Phacelia mutabilis Changeable phacelia Perennial herb  
Phacelia oreopola ssp. oreopola San gabriel mtns. imbricate phacelia Perennial herb  
Phacelia ramosissima Branching phacelia Perennial herb 3
Phacelia ramosissima var. austrolitoralis South coast branching phacelia Perennial herb 3
Phacelia ramosissima var. latifolia Branching phacelia Perennial herb 3
Phacelia ramosissima var. ramosissima Branching phacelia Perennial herb  
Phacelia ramosissima var. subglabra Branching phacelia Perennial herb 3
Phalaris californica Canarygrass Perennial grass 2
Phlox austromontana Southern mountain phlox Perennial herb  
Phlox diffusa Spreading phlox Perennial herb 3
Phlox douglasii Douglas' phlox Perennial herb 1
Phlox douglasii ssp. rigida Stiff douglas' phlox Perennial herb 1
Pholisma arenarium Dune food Perennial herb (parasitic)  
Phoradendron densum Dense mistletoe Perennial herb  
Phoradendron pauciflorum Fir mistletoe Perennial herb  
Phragmites australis Common reed Perennial grass 1
Phyla lanceolata Lance leaf lippia Perennial herb  
Phyla nodiflora Common lippia Perennial herb 13
Phyllospadix scouleri Scouler's surfgrass Perennial herb  
Phyllospadix torreyi Surf grass Perennial herb  
Piperia cooperi Coopers rein orchid 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 michaelii Michael's rein orchid Perennial herb  
Piperia unalascensis Alaska piperia Perennial herb  
Plantago subnuda Coastal plantain Perennial herb 6
Platanthera dilatata Scentbottle Perennial herb  
Platanthera dilatata var. leucostachys Sierra bog orchid Perennial herb  
Platanthera leucostachys White flowered bog orchid Perennial herb  
Platanthera sparsiflora Bog orchid Perennial herb  
Pleiacanthus spinosus Thorn skeletonweed Perennial herb  
Poa ampla Western blue grass Perennial grass 14
Poa fendleriana Muttongrass Perennial grass 4
Poa fendleriana ssp. longiligula Fendler's blue grass Perennial grass  
Poa juncifolia Western blue grass Perennial grass 13
Poa nevadensis Sierra blue grass Perennial grass 13
Poa pratensis ssp. agassizensis Agassiz kentucky blue grass Perennial grass  
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
Polygala 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 hydropiperoides Water pepper Perennial herb  
Polygonum punctatum Punctate smartweed Perennial herb 4
Porophyllum gracile Odora Perennial herb  
Potamogeton amplifolius Broad leaved pondweed Perennial herb (aquatic)  
Potamogeton foliosus Leafy pondweed Perennial herb (aquatic)  
Potamogeton foliosus ssp. foliosus Leafy pondweed Perennial herb (aquatic)  
Potamogeton foliosus var. foliosus Pondweed Perennial herb (aquatic)  
Potamogeton illinoensis Pondweed Perennial herb (aquatic)  
Potamogeton nodosus Pondweed Perennial herb (aquatic)  
Potamogeton pectinatus Fennel pondweed Perennial herb (aquatic)  
Potamogeton pusillus Small pondweed Perennial herb (aquatic)  
Potentilla anserina Silver weed cinquefoil Perennial herb 15
Potentilla anserina ssp. pacifica Silverweed Perennial herb 4
Potentilla biennis Biennial cinquefoil Perennial herb 1
Potentilla glandulosa Gland cinquefoil Perennial herb 13
Potentilla glandulosa ssp. ewanii Ewan's cinquefoil Perennial herb  
Potentilla glandulosa ssp. glandulosa Sticky cinquefoil Perennial herb  
Potentilla glandulosa ssp. nevadensis Nevada cinquefoil Perennial herb  
Potentilla glandulosa ssp. reflexa Sticky cinquefoil Perennial herb  
Potentilla gracilis Northwest cinquefoil Perennial herb 15
Potentilla gracilis var. fastigiata Slender cinquefoil Perennial herb  
Potentilla multijuga Ballona cinquefoil Perennial herb  
Primula clevelandii Padre's shooting star Perennial herb 7
Primula clevelandii var. clevelandii Cleveland's shooting star Perennial herb  
Primula clevelandii var. gracilis Padre's shooting star Perennial herb  
Primula clevelandii var. insularis Padre's shooting star Perennial herb 2
Primula clevelandii var. patula Padre's shooting star Perennial herb  
Primula fragrans Scented shooting star Perennial herb  
Primula jeffreyi Sierra shooting star Perennial herb 3
Prosartes smithii Largeflower fairybells Perennial herb 6
Prunella vulgaris Self heal Perennial herb 18
Prunella vulgaris var. lanceolata Mountain selfheal Perennial herb 8
Pseudognaphalium beneolens Cudweed Perennial herb 1
Pseudognaphalium biolettii Two-color rabbit-tobacco Perennial herb 4
Pseudognaphalium canescens Wright's cudweed Perennial herb 2
Pseudognaphalium canescens ssp. beneolens Wright's cudweed Perennial herb 1
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 leucocephalum White 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
Pterospora andromedea Pine drops Perennial herb (parasitic)  
Puccinellia nuttalliana Nuttall's alkali grass Perennial grass 1
Pycnanthemum californicum California mint Perennial herb 4
Pyrola asarifolia Bog wintergreen Perennial herb  
Pyrola asarifolia ssp. asarifolia Bog wintergreen Perennial herb  
Pyrola dentata Toothed wintergreen Perennial herb  
Pyrola minor Lesser wintergreen Perennial herb  
Pyrola picta White veined shinleaf Perennial herb  
Pyrrocoma racemosa Racemose pyrrocoma Perennial herb  
Pyrrocoma racemosa var. sessiliflora Racemose pyrrocoma Perennial herb  
Ranunculus 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. subrigidus Longbeak buttercup Perennial herb (aquatic)  
Ranunculus californicus Common buttercup Perennial herb 12
Ranunculus californicus var. californicus Common buttercup Perennial herb 2
Ranunculus cymbalaria Alkali buttercup Perennial herb  
Ranunculus cymbalaria var. saximontanus Rocky mountain buttercup Perennial herb  
Ranunculus hydrocharoides Frog's bit buttercup Perennial herb (aquatic)  
Ranunculus longirostris Longbeak buttercup Perennial herb (aquatic)  
Romneya coulteri Coulter's matilija poppy Perennial herb (rhizomatous) 44
Romneya trichocalyx Hairy matilija poppy Perennial herb 1
Rorippa gambelii Gambel's water cress Perennial herb (rhizomatous)  
Rorippa nasturtium-aquaticum Water cress Perennial herb (aquatic) 3
Rumex californicus California dock Perennial herb  
Rumex crassus Willow leaved dock Perennial herb  
Rumex hymenosepalus Wild rhubarb Perennial herb  
Rumex salicifolius Willow leaved dock Perennial herb 6
Rumex salicifolius var. crassus Willow leaved dock Perennial herb  
Rumex salicifolius var. denticulatus Smooth valved willow dock Perennial herb  
Rumex salicifolius var. salicifolius Willow dock Perennial herb 6
Rumex utahensis Toothed willow dock Perennial herb  
Rupertia physodes Common rupertia Perennial herb 1
Rupertia rigida Parish's rupertia Perennial herb  
Ruppia cirrhosa Ditch grass Perennial herb (aquatic)  
Ruppia maritima Ditch grass Perennial herb (aquatic)  
Sagina procumbens Arctic pearlwort Perennial herb  
Sagina saginoides Alpine pearlwort Perennial herb  
Sagittaria latifolia Broad leaf arrowhead Perennial herb (aquatic) 11
Sagittaria montevidensis Giant arrowhead Perennial herb (aquatic) 1
Sagittaria montevidensis ssp. calycina Montevideo arrowhead Perennial herb (aquatic)  
Sagittaria sanfordii Sanford's arrowhead Perennial herb (rhizomatous)  
Salicornia pacifica Pickleweed Perennial herb 8
Salicornia subterminalis Parish's glasswort Perennial herb 4
Salvia Xpalmeri Perennial herb  
Salvia sonomensis Sonoma sage Perennial herb 19
Salvia spathacea Hummingbird sage Perennial herb 38
Samolus parviflorus Water pimpernel Perennial herb  
Sanicula arguta Sharp toothed snakeroot Perennial herb 2
Sanicula bipinnata Poison sanicle Perennial herb  
Sanicula bipinnatifida Purple sanicle Perennial herb  
Sanicula crassicaulis Pacific sanicle Perennial herb 2
Sanicula graveolens Sierra sanicle Perennial herb  
Sanicula tuberosa Turkey pea Perennial herb  
Sarcodes sanguinea Snow plant Perennial herb (mycoparasitic)  
Sarcostemma cynanchoides ssp. hartwegii Climbing milkweed Perennial herb, Vine 1
Satureja douglasii Yerba buena Perennial herb 34
Satureja mimuloides Monkey flower savory Perennial herb 7
Saxifraga californica Greene's saxifrage Perennial herb  
Saxifraga fallax California 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 californicus California bulrush Perennial grass 15
Schoenoplectus pungens Common threesquare Perennial grass 2
Schoenoplectus pungens var. badius Common threesquare Perennial grass  
Schoenoplectus pungens var. longispicatus Common threesquare Perennial grass 2
Scirpus acutus var. occidentalis Hard stemmed tule Perennial grass 1
Scirpus americanus American tule Perennial grass 17
Scirpus californicus California tule Perennial grass 15
Scirpus maritimus Prairie bulrush Perennial grass 14
Scirpus microcarpus Small fruited bulrush Perennial grass 19
Scirpus pungens Three square Perennial grass 2
Scirpus robustus Big bulrush Perennial grass 10
Scrophularia atrata Black flowered figwort Perennial herb 5
Scrophularia californica California bee plant Perennial herb 30
Scrophularia californica ssp. californica California bee plant Perennial herb 30
Scrophularia californica ssp. floribunda Common california figwort Perennial herb 29
Scrophularia desertorum Desert figwort Perennial herb  
Scutellaria bolanderi Bolander's skullcap Perennial herb  
Scutellaria bolanderi ssp. austromontana Southern skullcap Perennial herb (rhizomatous)  
Scutellaria lateriflora Mad dog skullcap Perennial herb (rhizomatous) 5
Scutellaria siphocampyloides Gray leaved skullcap Perennial herb 5
Scutellaria tuberosa Danny's scullcap Perennial herb 1
Sedum spathulifolium Pacific stonecrop Perennial herb 29
Senecio astephanus San gabriel ragwort Perennial herb  
Senecio breweri Brewer's groundsel Perennial herb  
Senecio ionophyllus Tehachapi ragwort Perennial herb  
Senecio multilobatus Basin butterweed Perennial herb  
Senecio spartioides Broom groundsel Perennial herb  
Senecio triangularis Groundsel Perennial herb  
Sesuvium verrucosum Western sea purslane Perennial herb  
Setaria gracilis Perennial foxtail Perennial grass  
Setaria parviflora Marsh bristlegrass Perennial grass  
Sidalcea malviflora Wild hollyhock Perennial herb 20
Sidalcea malviflora ssp. malviflora Checker mallow Perennial herb (rhizomatous) 1
Sidalcea malviflora ssp. sparsifolia Few leafed checkerbloom Perennial herb (rhizomatous)  
Sidalcea neomexicana Mountain sidalcea Perennial herb 2
Sidalcea sparsifolia Southern checkerbloom Perennial herb (rhizomatous)  
Silene laciniata Cardinal catchfly Perennial herb 6
Silene laciniata ssp. californica California indian pink Perennial herb 2
Silene laciniata ssp. laciniata Cardinal catchfly Perennial herb 2
Silene laciniata ssp. major Indian pink Perennial herb 2
Silene lemmonii Lemmon's catchfly Perennial herb  
Silene parishii Parish's campion Perennial herb  
Sisyrinchium bellum Blue eyed grass Perennial herb 62
Sisyrinchium californicum California golden eyed grass Perennial herb 42
Sisyrinchium idahoense Idaho blue eyed grass Perennial herb 5
Sisyrinchium idahoense var. occidentale Idaho blue eyed grass Perennial herb  
Smilacina stellata Star flowered false solomon's seal Perennial herb 17
Solanum clokeyi Island nightshade Perennial herb 1
Solanum douglasii Douglas' nightshade Perennial herb 4
Solanum wallacei Northern island nightshade Perennial herb 1
Solanum xanti Nightshade Perennial herb, Shrub 13
Solidago californica Oreja de liebre Perennial herb 27
Solidago canadensis Canada goldenrod Perennial herb 16
Solidago confinis Southern goldenrod Perennial herb 4
Solidago sparsiflora Great basin goldenrod Perennial herb 5
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 erectum Simplestem bur reed Perennial herb  
Sparganium erectum ssp. stoloniferum Bur reed Perennial herb 2
Sparganium eurycarpum var. greenei Bur reed Perennial herb 2
Spergularia macrotheca Sticky sand spurry Perennial herb 1
Spergularia macrotheca var. leucantha White sticky sand spurry Perennial herb  
Spergularia macrotheca var. macrotheca Sticky sand spurry Perennial herb  
Sphaeralcea ambigua Desert mallow Perennial herb 29
Sphaeralcea ambigua var. ambigua Apricot mallow Perennial herb 2
Sphaeralcea ambigua var. rosacea Rosy apricot mallow Perennial herb  
Sphaeralcea ambigua var. rugosa Desert globemallow Perennial herb  
Sphaeralcea emoryi Emory's globemallow Perennial herb 1
Sphaeralcea emoryi var. emoryi Emory's desert mallow Perennial herb 1
Sphaeralcea grossulariifolia Gooseberryleaf globemallow Perennial herb, Shrub 1
Sphaeralcea grossulariifolia ssp. grossulariifolia Gooseberry leaved globemallow Perennial herb, Shrub 1
Sphenosciadium capitellatum Grayswamp whiteheads Perennial herb 2
Sporobolus airoides Alkali sacaton Perennial grass 20
Sporobolus contractus Spike dropseed Perennial grass 1
Sporobolus cryptandrus Sand dropseed Perennial grass 11
Stachys ajugoides Hedge nettle Perennial herb 6
Stachys ajugoides var. ajugoides Ajuga hedge nettle Perennial herb 6
Stachys ajugoides var. rigida Hedge nettle Perennial herb  
Stachys albens Cobwebby hedge nettle Perennial herb 9
Stachys bergii Berg's hedgenettle Perennial herb  
Stachys bullata Southern hedge nettle Perennial herb 16
Stachys mexicana Mexican hedgenettle Perennial herb  
Stachys rigida Rough hedgenettle Perennial herb 3
Stachys rigida var. quercetorum Rough hedgenettle Perennial herb  
Stachys rigida var. rigida Rough hedgenettle Perennial herb  
Stanleya pinnata Prince's plume Perennial herb, Shrub 7
Stanleya pinnata var. inyoensis Inyo prince's plume Perennial herb, Shrub 2
Stanleya pinnata var. pinnata Prince's plume Perennial herb, Shrub 2
Stenotus lanuginosus Woolly stenotus Perennial herb  
Stephanomeria cichoriacea Fort tejon milk aster Perennial herb  
Stephanomeria exigua ssp. carotifera White plume stephanomeria Perennial herb  
Stephanomeria parryi Parry rock pink Perennial herb  
Stephanomeria pauciflora Wire lettuce Perennial herb 1
Stephanomeria pauciflora var. pauciflora Wire lettuce Perennial herb 1
Stephanomeria spinosa Thorny skeleton plant Perennial herb  
Stillingia linearifolia Narrow leaved stillingia Perennial herb  
Stillingia paucidentata Tooth leaf Perennial herb 1
Stipa cernua Nodding needle grass Perennial grass 23
Stipa coronata Crested needle grass Perennial grass 7
Stipa diegoensis San diego county needle grass Perennial grass  
Stipa hymenoides Indian rice grass Perennial grass 15
Stipa latiglumis Wide-glumed needle grass Perennial grass  
Stipa lepida Foothill needle grass Perennial grass 25
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 parishii Parish's needlegrass Perennial grass  
Stipa parishii var. parishii Parish's needlegrass Perennial grass  
Stipa pulchra Purple needle grass Perennial grass 42
Stipa speciosa Desert needle grass Perennial grass 8
Stipa thurberiana Thurber's needle grass Perennial grass  
Streptanthus bernardinus Laguna mtns. jewel flower Perennial herb  
Streptanthus campestris Southern jewel flower Perennial herb  
Stuckenia pectinata Sago pondweed Perennial herb (aquatic)  
Suaeda esteroa Estuary seablite Perennial herb 1
Suaeda moquinii Bush seepweed Perennial herb 3
Suaeda nigra Bush seepweed Perennial herb 3
Swertia albicaulis Whitestem gentian Perennial herb  
Swertia albicaulis var. nitida Shining swertia Perennial herb  
Swertia neglecta Pine green gentian Perennial herb  
Swertia parryi Parry's green gentian Perennial herb  
Symphyotrichum ascendens Western aster Perennial herb 1
Symphyotrichum chilense Pacific aster Perennial herb 36
Symphyotrichum defoliatum San bernardino aster Perennial herb (rhizomatous)  
Symphyotrichum greatae Greata's aster Perennial herb (rhizomatous)  
Symphyotrichum lanceolatum White panicle aster Perennial herb  
Symphyotrichum lanceolatum var. hesperium Western lance leaf aster Perennial herb  
Symphyotrichum subulatum var. parviflorum Eastern annual saltmarsh aster Perennial herb  
Tanacetum bipinnatum Dune tansy Perennial herb 9
Tanacetum camphoratum Dune tansy Perennial herb 9
Taraxacum californicum California dandelion Perennial herb  
Taraxia ovata Sun cup Perennial herb 2
Taraxia subacaulis Long leaved suncup Perennial herb  
Tauschia arguta Southern tauschia Perennial herb  
Tauschia hartwegii Hartweg's umbrellawort Perennial herb 1
Tauschia parishii Parish's tauschia Perennial herb  
Thalictrum fendleri Fendler's meadow rue Perennial herb 10
Thalictrum fendleri var. fendleri Fendler's meadow rue Perennial herb  
Thalictrum fendleri var. polycarpum Torrey's meadow rue Perennial herb 13
Thalictrum polycarpum Fendler's meadow-rue Perennial herb 13
Thelypodium integrifolium Entire leaved thelypodium Perennial herb  
Thelypodium integrifolium ssp. affine White entire leaved thelypodium Perennial herb  
Thermopsis californica California goldenbanner Perennial herb 1
Thermopsis californica var. argentata Silvery false lupine Perennial herb (rhizomatous)  
Thermopsis macrophylla Santa ynez false lupine Perennial herb 2
Thermopsis macrophylla var. argentata Silvery false lupine Perennial herb (rhizomatous)  
Tiquilia canescens Woody crinklemat Perennial herb, Shrub  
Tiquilia plicata Plicate coldenia Perennial herb  
Toxicoscordion brevibracteatum Desert death camas Perennial herb  
Toxicoscordion exaltatum Giant death camas Perennial herb  
Toxicoscordion fremontii Fremont's star lily Perennial herb 5
Tridens muticus Slim tridens Perennial grass  
Trifolium howellii Howell's clover Perennial herb  
Trifolium macrocephalum Big headed clover Perennial herb  
Trifolium monanthum Carpet clover Perennial herb  
Trifolium monanthum ssp. grantianum Grant's carpet clover Perennial herb  
Trifolium monanthum ssp. monanthum Carpet clover Perennial herb  
Trifolium monanthum var. grantianum Grant's carpet clover Perennial herb  
Trifolium monanthum var. monanthum Mountain carpet clover Perennial herb