California Native Plant Link Exchange
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Criteria:   Family = 'Asteraceae'
1845  records include photos for these plants ! potentially invasive
 non-native 
# number of sources
Scientific Name Common Name Lifeform #
Acamptopappus shockleyi Shockley's goldenhead Shrub  
Acamptopappus sphaerocephalus Goldenhead Shrub 3
Acamptopappus sphaerocephalus var. hirtellus Hairy goldenhead Shrub  
Acamptopappus sphaerocephalus var. sphaerocephalus Goldenhead Shrub  
Achillea filipendulina Fernleaf yarrow Perennial herb 6
Achillea millefolium Yarrow Perennial herb 69
Achillea millefolium var. borealis Boreal yarrow Perennial herb 1
Achyrachaena mollis Blow wives Annual herb 2
Acourtia microcephala Sacapellote Perennial herb 1
Acroptilon repens ! Russian knapweed Perennial herb  
Adenocaulon bicolor Trail plant Perennial herb  
Adenophyllum cooperi Cooper's dogweed Perennial herb  
Adenophyllum porophylloides San felipe dogweed Perennial herb  
Ageratina adenophora ! Thoroughwort Perennial herb  
Ageratina herbacea Fragrant snakeroot Perennial herb 1
Ageratina occidentalis Western eupatorium Perennial herb 4
Ageratina riparia Spreading snakeroot Perennial herb  
Ageratina shastensis Shasta ageratina Perennial herb  
Ageratum conyzoides Tropical whiteweed Annual, Perennial herb  
Ageratum houstonianum Bluemink Annual, Perennial herb 1
Agoseris Xdasycarpa Perennial herb  
Agoseris Xelata Tall agoseris Perennial herb  
Agoseris apargioides Coast dandelion Perennial herb  
Agoseris apargioides var. apargioides Coast dandelion Perennial herb  
Agoseris apargioides var. eastwoodiae Eastwood's seaside agoseris Perennial herb  
Agoseris apargioides var. maritima Woolly goat chicory Perennial herb  
Agoseris aurantiaca Orange flowered agoseris Perennial herb 1
Agoseris aurantiaca var. aurantiaca Orange agoseris Perennial herb  
Agoseris elata Tall agoseris Perennial herb  
Agoseris glauca Short beaked agoseris Perennial herb  
Agoseris glauca var. agrestis Field short beaked agoseris Perennial herb  
Agoseris glauca var. glauca Short beaked agoseris Perennial herb  
Agoseris glauca var. laciniata False dandelion Perennial herb  
Agoseris glauca var. monticola Mountain agoseris Perennial herb  
Agoseris grandiflora Giant mountain dandelion Perennial herb 3
Agoseris grandiflora var. grandiflora Giant mountain dandelion Perennial herb  
Agoseris grandiflora var. leptophylla Giant mountain dandelion Perennial herb 3
Agoseris 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  
Agoseris hirsuta Woolly goat chicory Perennial herb  
Agoseris monticola Mountain agoseris Perennial herb  
Agoseris parviflora False dandelion Perennial herb  
Agoseris retrorsa Spear leaved agoseris Perennial herb 1
Almutaster pauciflorus Alkali marsh aster Perennial herb  
Amauriopsis dissecta Ragged leaf bahia Perennial herb  
Amberboa moschata Sweetsultan Annual herb  
Amblyopappus pusillus Pineapple weed Annual herb  
Ambrosia Xplatyspina Perennial herb  
Ambrosia acanthicarpa Annual burrweed Annual herb 3
Ambrosia ambrosioides Ambrosia leaved burbush Perennial herb 1
Ambrosia artemisiifolia Annual ragweed Annual herb  
Ambrosia bipinnatifida Beach bur Perennial herb 10
Ambrosia chamissonis Silver beachweed Perennial herb 10
Ambrosia chenopodiifolia San diego bur sage Shrub 1
Ambrosia confertiflora Weak leaved burweed Perennial herb  
Ambrosia dumosa Burro weed Shrub 8
Ambrosia eriocentra Woolly bur sage Shrub  
Ambrosia ilicifolia Holly leaved burbush Shrub  
Ambrosia monogyra Singlewhorl burrobrush Shrub  
Ambrosia psilostachya Ragweed Perennial herb 7
Ambrosia pumila San diego ambrosia Perennial herb (rhizomatous) 3
Ambrosia salsola Burrobrush Shrub 6
Ambrosia salsola var. fasciculata Burrobrush Perennial herb  
Ambrosia salsola var. pentalepis Five scaled burrobrush Shrub  
Ambrosia salsola var. salsola Burrobrush Shrub  
Ambrosia trifida ! Giant ragweed Annual herb  
Amphipappus fremontii Fremont's chaff bush Shrub  
Amphipappus fremontii var. fremontii Fremont's chaff bush Shrub  
Amphipappus fremontii var. spinosus Spiny fremont's chaffbush Shrub  
Anaphalis margaritacea Pearly everlasting Perennial herb 18
Ancistrocarphus filagineus Woolly fishhooks Annual herb  
Ancistrocarphus keilii Santa ynez groundstar Annual herb  
Anisocarpus madioides Woodland madia Perennial herb 2
Anisocarpus scabridus Scabrid alpine tarplant Perennial herb  
Anisocoma acaulis Scale bud Annual herb 2
Antennaria alpina Alpine pussytoes Perennial herb 1
Antennaria argentea Silvery everlasting Perennial herb  
Antennaria corymbosa Meadowpussytoes Perennial herb  
Antennaria dimorpha Gray cushion pussytoes Perennial herb  
Antennaria dioica Stoloniferous pussytoes Perennial herb 5
Antennaria flagellaris Stoloniferous pussytoes Perennial herb  
Antennaria geyeri Geyer's pussytoes Perennial herb  
Antennaria howellii Howell's pussytoes Perennial herb  
Antennaria howellii ssp. howellii Howell's pussytoes Perennial herb  
Antennaria lanata Woolly pussy toes Perennial herb  
Antennaria luzuloides Silvery brown pussytoes Perennial herb  
Antennaria luzuloides ssp. aberrans Rush pussytoes Perennial herb  
Antennaria luzuloides ssp. luzuloides Rush pussytoes Perennial herb  
Antennaria marginata White margined pussytoes Perennial herb  
Antennaria media Alpine pussytoes Perennial herb 1
Antennaria microphylla Littleleaf pussytoes Perennial herb 5
Antennaria parvifolia Small leaf pussytoes Perennial herb 5
Antennaria pulchella Beautiful pussytoes Perennial herb  
Antennaria racemosa Racemose pussytoes Perennial herb  
Antennaria rosea Rosy everlasting Perennial herb 2
Antennaria rosea ssp. arida Rosy pussytoes Perennial herb  
Antennaria rosea ssp. confinis Rosy pussytoes Perennial herb  
Antennaria rosea ssp. rosea Rosy pussytoes Perennial herb  
Antennaria sawyeri Sawyer's pussy-toes Perennial herb  
Antennaria stenophylla Narrowleaf pussytoes Perennial herb  
Antennaria suffrutescens Evergreen pussytoes Perennial herb  
Antennaria umbrinella Brown pussytoes Perennial herb  
Anthemis arvensis Corn chamomile Annual herb  
Anthemis cotula Dog fennel Annual herb  
Anthemis tinctoria Golden margeurite Perennial herb  
Arctium lappa Greater burdock Perennial herb 1
Arctium minus Common burdock Perennial herb  
Arctotheca calendula ! Cape weed Annual, Perennial herb 1
Arctotheca prostrata ! Prostrate cape weed Annual, Perennial herb 1
Arctotis fastuosa Monarch of the veld, cape daisy Annual herb 1
Arctotis stoechadifolia Blue eyed african daisy Perennial herb 1
Arctotis venusta Blue-eyed african daisy Perennial herb  
Argyranthemum foeniculaceum Canary island margeurite Perennial herb  
Argyranthemum foeniculum Dill daisy Perennial herb  
Argyranthemum frutescens Marguerite Perennial herb 3
Arida arizonica Silver lake daisy Annual herb  
Arida carnosa Shrubby alkali aster Shrub  
Arnica Xdiversifolia Rayless arnica Perennial herb  
Arnica alpina Perennial herb  
Arnica amplexicaulis Streambank arnica Perennial herb 3
Arnica cernua Serpentine arnica Perennial herb (rhizomatous)  
Arnica chamissonis Chamisso arnica Perennial herb 5
Arnica chamissonis ssp. foliosa Meadow arnica Perennial herb 5
Arnica cordifolia Heart leaved arnica Perennial herb 1
Arnica cordifolia var. cordifolia Heart leaved arnica Perennial herb  
Arnica cordifolia var. pumila Dwarf heart leaved arnica Perennial herb 1
Arnica dealbata Mock leopardbane Perennial herb  
Arnica discoidea Rayless arnica Perennial herb  
Arnica diversifolia Lawless arnica Perennial herb  
Arnica fulgens Hillside arnica Perennial herb (rhizomatous)  
Arnica lanceolata Clasping arnica Perennial herb  
Arnica lanceolata ssp. prima Clasping arnica Perennial herb 3
Arnica latifolia Mountain arnica Perennial herb  
Arnica longifolia Seep spring arnica Perennial herb  
Arnica mollis Cordilleran arnica Perennial herb 1
Arnica nevadensis Sierra arnica Perennial herb 1
Arnica ovata Sticky leaf arnica Perennial herb  
Arnica parryi Nodding arnica Perennial herb  
Arnica parryi ssp. parryi Parry's arnica Perennial herb  
Arnica parryi ssp. sonnei Sonne's nodding arnica Perennial herb  
Arnica sororia Twin arnica Perennial herb (rhizomatous)  
Arnica spathulata Klamath arnica Perennial herb (rhizomatous)  
Arnica tomentella Recondite arnica Perennial herb 1
Arnica venosa Veiny arnica Perennial herb (rhizomatous)  
Arnica viscosa Mt. shasta arnica Perennial herb (rhizomatous)  
Artemisia abrotanum Southernwood Shrub 2
Artemisia absinthium Absinthium Shrub 9
Artemisia annua Sweet annie Annual herb 2
Artemisia arbuscula Black sagebrush Shrub 6
Artemisia arbuscula ssp. arbuscula Low sagebrush Shrub 1
Artemisia arbuscula ssp. longiloba Little sagebrush Shrub  
Artemisia arbuscula ssp. thermopola Warm springs low sagebrush Shrub  
Artemisia biennis Biennial sagewort Annual, Perennial herb  
Artemisia bigelovii Bigelow sagebrush Shrub  
Artemisia borealis Boreal sage Perennial herb  
Artemisia borealis ssp. borealis Boreal sage Perennial herb  
Artemisia californica Coastal sage brush Shrub 43
Artemisia campestris Field sagewort Perennial herb  
Artemisia campestris ssp. borealis Northern sagewort Perennial herb  
Artemisia campestris var. scouleriana Field sagewort Perennial herb  
Artemisia cana Silver sagebrush Shrub 5
Artemisia cana ssp. bolanderi Bolander's silver sagebrush Shrub  
Artemisia douglasiana California mugwort Perennial herb 35
Artemisia dracunculus Tarragon Perennial herb 12
Artemisia filifolia Sand sagebrush Shrub 1
Artemisia furcata var. furcata Forked wormwood Shrub  
Artemisia ludoviciana Silver wormwood Perennial herb 17
Artemisia ludoviciana ssp. albula White hugwort Perennial herb 1
Artemisia ludoviciana ssp. candicans Gray mugwort Perennial herb  
Artemisia ludoviciana ssp. incompta Western mugwort Perennial herb  
Artemisia ludoviciana ssp. ludoviciana Silver wormwood Perennial herb 3
Artemisia ludoviciana ssp. mexicana White sagebrush Perennial herb  
Artemisia michauxiana Lemon sagewort Perennial herb 1
Artemisia nesiotica Island sagebrush Shrub  
Artemisia norvegica Alpine sagewort Perennial herb  
Artemisia norvegica ssp. saxatilis Boreal sagewort Perennial herb  
Artemisia nova Black sagebrush Shrub 4
Artemisia palmeri San diego sagewort Shrub 9
Artemisia parryi Parry's wormwood Shrub  
Artemisia pycnocephala Beach sagewort Perennial herb 28
Artemisia rothrockii Rothrock sagebrush Shrub  
Artemisia spiciformis Snowfield sagebrush Perennial herb  
Artemisia spinescens Budsage Shrub  
Artemisia suksdorfii Coastal mugwort Perennial herb 3
Artemisia tridentata Common sagebrush Shrub 26
Artemisia tridentata ssp. parishii Parish's sagebrush Shrub 1
Artemisia tridentata ssp. tridentata Big sagebrush Shrub 3
Artemisia tridentata ssp. vaseyana Mountain sagebrush Shrub 8
Artemisia tridentata ssp. wyomingensis Wyoming sagebrush Shrub 4
Artemisia tripartita Threetip sagebrush Shrub  
Artemisia tripartita ssp. tripartita Threetip sagebrush Shrub  
Artemisia vulgaris Common wormwood Perennial herb, Shrub 2
Aster alpigenus var. andersonii Alpine aster Perennial herb 1
Aster ascendens Long leaved aster Perennial herb  
Aster bernardinus San bernardino aster Perennial herb  
Aster breweri Brewer's aster Perennial herb  
Aster brickellioides Rayless leafy aster Perennial herb  
Aster campestris Western meadow aster Perennial herb  
Aster chilensis California aster Perennial herb 37
Aster eatonii Eaton's aster Perennial herb 2
Aster engelmannii Engelmann's aster Perennial herb 2
Aster foliaceus Leafy aster Perennial herb 2
Aster foliaceus var. apricus Parry's leafy aster Perennial herb 1
Aster foliaceus var. lyallii Lyall's leafy aster Perennial herb  
Aster foliaceus var. parryi Parry's aster Perennial herb 1
Aster frondosus Short rayed alkali aster Annual herb  
Aster greatae Greata's aster Perennial herb (rhizomatous)  
Aster integrifolius Entire leaved aster Perennial herb  
Aster lanceolatus ssp. hesperius Western lance leaf aster Perennial herb  
Aster ledophyllus Cascade aster Perennial herb  
Aster lentus Suisun marsh aster Perennial herb (rhizomatous) 2
Aster novae-angliae New england aster Perennial herb 10
Aster occidentalis Western mountain aster Perennial herb 1
Aster occidentalis var. occidentalis Western mountain aster Perennial herb  
Aster occidentalis var. yosemitanus Western bog aster Perennial herb  
Aster oregonensis Oregon aster Perennial herb  
Aster pauciflorus Marsh alkali aster Perennial herb  
Aster peirsonii Peirson's oreastrum aster Perennial herb  
Aster radulinus Rough leaved aster Perennial herb 2
Aster scopulorum Lava aster Perennial herb  
Atrichoseris platyphylla Parachute flower Annual herb  
Baccharis brachyphylla Short leaved baccharis Shrub  
Baccharis douglasii Salt marsh baccharis Perennial herb 16
Baccharis emoryi Emory's baccharis Shrub 7
Baccharis glutinosa Salt Marsh baccharis Perennial herb 29
Baccharis malibuensis Malibu baccharis Shrub  
Baccharis pilularis Coyote brush Shrub 58
Baccharis pilularis ssp. consanguinea Coyote brush Shrub 50
Baccharis pilularis ssp. pilularis Coyote brush Shrub 5
Baccharis plummerae Plummer's baccharis Shrub 2
Baccharis plummerae ssp. glabrata San simeon baccharis Shrub  
Baccharis plummerae ssp. plummerae Plummer's baccharis Shrub  
Baccharis salicifolia Mule fat Shrub 28
Baccharis salicifolia ssp. salicifolia Mule fat Shrub  
Baccharis salicina Willow baccharis Shrub 7
Baccharis sarothroides Broom baccharis Shrub 9
Baccharis sergiloides Desert baccharis Shrub 1
Baccharis vanessae Encinitas baccharis Shrub  
Bahia dissecta Ragged leaf bahia Perennial herb  
Bahia neomexicana Many flowered bahia Annual herb  
Bahiopsis laciniata San Diego County viguiera Shrub 8
Bahiopsis parishii Parish viguiera Shrub 6
Bahiopsis reticulata Net veined viguiera Shrub  
Bahiopsis tomentosa Shrub  
Baileya multiradiata Desert marigold Perennial herb 19
Baileya multiradiata var. multiradiata Wild marigold Perennial herb 19
Baileya pauciradiata Lax flower Annual herb  
Baileya pleniradiata Wooly marigold Annual, Perennial herb 2
Balsamorhiza Xterebinthacea Perennial herb  
Balsamorhiza deltoidea Deltoid balsam root Perennial herb 2
Balsamorhiza hirsuta Hairy balsam root Perennial herb  
Balsamorhiza hookeri Hooker's balsam root Perennial herb 1
Balsamorhiza hookeri var. lanata Woolly balsamroot Perennial herb  
Balsamorhiza incana Hoary balsamroot Perennial herb  
Balsamorhiza lanata Woolly balsamroot Perennial herb  
Balsamorhiza macrolepis Big scale balsam root Perennial herb 1
Balsamorhiza macrolepis var. macrolepis Big scale balsamroot Perennial herb  
Balsamorhiza macrolepis var. platylepis Flat scale balsam root Perennial herb 1
Balsamorhiza sagittata Arrow leaved balsamroot Perennial herb 7
Balsamorhiza sericea Silky balsamroot Perennial herb  
Balsamorhiza serrata Serrate balsam root Perennial herb  
Bebbia juncea Sweetbush Shrub 4
Bebbia juncea var. aspera Rough sweetbush Shrub  
Bellis perennis English lawn daisy Perennial herb 3
Benitoa occidentalis Benitoa Annual herb  
Bidens bipinnata Spanish needles Perennial herb  
Bidens cernua Nodding beggartick Perennial herb  
Bidens cernua var. cernua Nodding bur marigold Perennial herb  
Bidens frondosa Sticktight Annual herb  
Bidens laevis Bur marigold Perennial herb 3
Bidens pilosa Hairy beggarticks Annual herb  
Bidens pilosa var. pilosa Common beggar ticks Annual herb  
Bidens tripartita Tickseed Annual herb  
Bidens vulgata Western sticktight Annual herb  
Blennosperma bakeri Sonoma sunshine Annual herb  
Blennosperma nanum Yellow carpet Annual herb  
Blennosperma nanum var. nanum Common blennosperma Annual herb  
Blennosperma nanum var. robustum Point reyes blennosperma Annual herb  
Blepharipappus scaber Blepharipappus Annual herb  
Blepharizonia laxa Glandular big tarweed Annual herb  
Blepharizonia plumosa Big tarweed Annual herb  
Blepharizonia plumosa ssp. plumosa Big tarplant Annual herb  
Blepharizonia plumosa ssp. viscida Glandular big tarweed Annual herb  
Brickellia arguta California spear leaved brickellia Shrub 1
Brickellia arguta var. arguta California spear leaved brickellia Shrub 1
Brickellia arguta var. odontolepis California spear leaved brickellia Shrub  
Brickellia atractyloides Spear leaved brickellia Shrub (stem succulent) 1
Brickellia atractyloides var. arguta California spear leaved brickellia Shrub 1
Brickellia atractyloides var. atractyloides Spear leaved brickellia Shrub (stem succulent)  
Brickellia atractyloides var. odontolepis California spear leaved brickellia Shrub  
Brickellia californica California brickellia Perennial herb 14
Brickellia californica var. californica California brickellbush Perennial herb 2
Brickellia californica var. jepsonii Jepson's brickellbush Perennial herb  
Brickellia coulteri Coulter's brickellbush Perennial herb  
Brickellia desertorum Desert brickellia Shrub  
Brickellia frutescens Shrubby brickellia Shrub  
Brickellia grandiflora Large flowered brickelbush Perennial herb  
Brickellia greenei Greene's brickelbush Perennial herb  
Brickellia incana Woolly brickellia Shrub 1
Brickellia knappiana Knapp's brickellia Shrub  
Brickellia longifolia Willow leaved brickellia Shrub  
Brickellia longifolia var. longifolia Longleaf brickellbush Shrub  
Brickellia longifolia var. multiflora Longleaf brickellbush Shrub  
Brickellia microphylla Little leaved brickellia Shrub  
Brickellia microphylla var. microphylla Littleleaf brickellbush Shrub  
Brickellia microphylla var. scabra Rough brickellbush Shrub  
Brickellia multiflora Gum leaved brickellia Shrub  
Brickellia nevinii Nevin's brickellia Shrub 2
Brickellia oblongifolia Mojave brickellbush Perennial herb  
Brickellia oblongifolia var. linifolia Pinon brickellia Perennial herb  
Brickellia oblongifolia var. oblongifolia Mojave brickellbush Perennial herb  
Brickellia watsonii Watson's brickellia Perennial herb  
Cacaliopsis nardosmia Cut leaf cacaliopsis Perennial herb  
Calendula arvensis Field marigold Annual herb  
Calendula officinalis Pot marigold Annual herb 9
Calycadenia fremontii Fremont's calycadenia Annual herb  
Calycadenia hooveri Hoover's calycadenia Annual herb  
Calycadenia micrantha Small flowered calycadenia Annual herb  
Calycadenia mollis Soft calycadenia Annual herb  
Calycadenia multiglandulosa Rosin weed Annual herb 1
Calycadenia oppositifolia Butte county calycadenia Annual herb  
Calycadenia pauciflora Small flowered calycadenia Annual herb  
Calycadenia spicata Spicate calycadenia Annual herb  
Calycadenia truncata Rosin weed Annual herb  
Calycadenia truncata ssp. microcephala Oregon western rosinweed Annual herb  
Calycadenia villosa Dwarf calycadenia Annual herb  
Calycoseris parryi Yellow tackstem Annual herb  
Calycoseris wrightii White tackstem Annual herb  
Calyptocarpus vialis Straggler daisy Perennial herb  
Carduus acanthoides ! Spiny plumeless thistle Perennial herb  
Carduus acanthoides ssp. acanthoides Plumeless thistle Perennial herb  
Carduus crispus Curly plumeless thistle Annual herb  
Carduus nutans ! Nodding plumeless thistle Perennial herb  
Carduus pycnocephalus ! Italian thistle Annual herb  
Carduus pycnocephalus ssp. pycnocephalus Italian thistle Annual herb  
Carduus tenuiflorus ! Slender flowered thistle Annual herb  
Carlquistia muirii Muir's tarplant Perennial herb (rhizomatous)  
Carthamus baeticus Smooth distaff thistle Annual herb  
Carthamus creticus Smooth distaff thistle Annual herb  
Carthamus lanatus ! Woolly distaff thistle Annual herb  
Carthamus leucocaulos White stemmed distaff thistle Annual herb  
Carthamus oxyacantha Jeweled distaff thistle Annual herb  
Carthamus tinctorius Safflower Annual herb 1
Centaurea Xmoncktonii Meadow knapweed Annual, Perennial herb  
Centaurea Xpouzinii Pouzin's purple star thistle Annual, Perennial herb  
Centaurea Xpratensis Meadow thistle Annual herb  
Centaurea aspera Rough star-thistle Perennial herb  
Centaurea babylonica Syrian knapweed Perennial herb  
Centaurea benedicta Blessed thistle Annual herb 1
Centaurea biebersteinii Spotted knapweed Perennial herb  
Centaurea calcitrapa ! Purple star thistle Annual, Perennial herb  
Centaurea calcitrapoides Smallhead starthistle Annual, Perennial herb  
Centaurea cineraria Dusty miller Perennial herb 2
Centaurea cyanus Batchelor's button Annual herb 7
Centaurea debeauxii Meadow knapweed Annual, Perennial herb  
Centaurea diffusa ! Diffuse knapweed Perennial herb  
Centaurea diluta ! Star-thistle Annual herb  
Centaurea eriophora Wild sandheath Perennial herb  
Centaurea iberica Iberian knapweed Perennial herb  
Centaurea jacea Brownray knapweed Perennial herb  
Centaurea jacea ssp. jacea Brown knapweed Perennial herb  
Centaurea jacea ssp. nigra Black knapweed Perennial herb  
Centaurea jacea ssp. pratensis ! Meadow knapweed Annual, Perennial herb  
Centaurea maculosa Spotted knapweed Perennial herb  
Centaurea melitensis ! Tocalote Annual herb  
Centaurea nigra Lesser knapweed Perennial herb  
Centaurea nigrescens Tyrol knapweed Perennial herb  
Centaurea pouzinii Pouzin's star-thistle Perennial herb  
Centaurea salmantica Dagger flower Perennial herb  
Centaurea solstitialis ! Yellow starthistle Annual herb  
Centaurea squarrosa Spreading thistle Perennial herb  
Centaurea stoebe Spotted knapweed Perennial herb  
Centaurea stoebe ssp. micranthos ! Spotted knapweed Perennial herb  
Centaurea sulphurea Sicilian starthistle Annual herb  
Centaurea virgata Squarrose knapweed Perennial herb  
Centaurea virgata ssp. squarrosa ! Squarrose knapweed Perennial herb  
Centipeda minima Spreading sneezeweed Perennial herb  
Centromadia fitchii Spikeweed Annual herb  
Centromadia parryi Pappose tarweed Annual herb  
Centromadia parryi ssp. australis Southern tarplant Annual herb 1
Centromadia parryi ssp. congdonii Congdon's tarplant Annual herb  
Centromadia parryi ssp. parryi Pappose tarplant Annual herb  
Centromadia parryi ssp. rudis Pappose tarweed 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  
Chaenactis alpigena Southern sierra chaenactis Perennial herb  
Chaenactis artemisiifolia Artemisia leaved chaenactis Annual herb 4
Chaenactis carphoclinia Pebble pincushion Annual herb  
Chaenactis carphoclinia var. carphoclinia Pebble pincushion Annual herb  
Chaenactis carphoclinia var. peirsonii Peirson's pincushion Annual herb  
Chaenactis douglasii Chaenactis Annual, Perennial herb  
Chaenactis douglasii var. alpina Alpine dusty maidens Perennial herb  
Chaenactis douglasii var. douglasii Dusty maidens 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. heterocarpha Variable fruited yellow chaenactis Annual herb  
Chaenactis glabriuscula var. lanosa Pincushion flower Annual herb  
Chaenactis glabriuscula var. megacephala Big headed yellow chaenactis Annual herb 1
Chaenactis glabriuscula var. orcuttiana Orcutt's yellow chaenactis Annual herb  
Chaenactis macrantha Mohave pincushion Annual herb  
Chaenactis nevadensis Sierra chaenactis Perennial herb  
Chaenactis parishii Parish's chaenactis Perennial herb  
Chaenactis santolinoides Santolina chaenactis Perennial herb  
Chaenactis stevioides Esteve pincushion Annual herb 2
Chaenactis suffrutescens Shasta chaenactis Perennial herb  
Chaenactis xantiana Xantus' chaenactis Annual herb 1
Chaetadelpha wheeleri Wheeler's chaetadelpha Perennial herb  
Chaetopappa ericoides Heath leaved chaetopappa Perennial herb 1
Chamaemelum fuscatum Dusky dog fennel Annual herb  
Chamaemelum nobile Russian chamomile Perennial herb 9
Chamomilla occidentalis Western chamomile Annual herb  
Chamomilla suaveolens Common pineapple weed Annual herb  
Chloracantha spinosa Spiny chloracantha Perennial herb  
Chloracantha spinosa var. spinosa Spiny goldenbush Perennial herb  
Chondrilla juncea ! Skeleton weed Perennial herb  
Chorisiva nevadensis Nevada sumpweed Annual herb  
Chrysanthemoides monilifera  
Chrysanthemoides monilifera ssp. monilifera ! Bitou bush  
Chrysanthemum balsamita Costmary Perennial herb 2
Chrysanthemum carinatum Tri colored daisy Annual herb 7
Chrysanthemum coronarium Crown daisy Annual herb 2
Chrysanthemum segetum Corn chrysanthemum Annual herb  
Chrysothamnus albidus White flowered rabbitbrush Perennial herb  
Chrysothamnus depressus Long flowered rabbitbrush Shrub 1
Chrysothamnus gramineus Panamint rock goldenrod Perennial herb  
Chrysothamnus greenei Greene's rabbitbrush Shrub  
Chrysothamnus humilis Truckee rabbitbrush Shrub  
Chrysothamnus nauseosus Common rabbitbrush Shrub 23
Chrysothamnus nauseosus ssp. albicaulis Rubber rabbitbrush Shrub  
Chrysothamnus nauseosus ssp. bernardinus San bernardino rubber rabbitbrush Shrub  
Chrysothamnus nauseosus ssp. ceruminosus Sharp bracted rabbitbrush Shrub  
Chrysothamnus nauseosus ssp. consimilis Gray rabbitbrush Shrub  
Chrysothamnus nauseosus ssp. hololeucus Common rabbitbrush Shrub  
Chrysothamnus nauseosus ssp. leiospermus Common rabbitbrush Shrub  
Chrysothamnus nauseosus ssp. mohavensis Mohave common rabbitbrush Shrub  
Chrysothamnus nauseosus ssp. viridulus Rubber rabbitbrush Shrub  
Chrysothamnus nauseosus ssp. washoensis Washoe common rabbitbrush Shrub  
Chrysothamnus paniculatus Blackbanded rabbit brush Perennial herb 1
Chrysothamnus parryi Parry's rabbit brush Shrub  
Chrysothamnus parryi ssp. asper Rough parry's rabbitbrush Shrub  
Chrysothamnus parryi ssp. bolanderi Bolander's rabbitbrush Shrub  
Chrysothamnus parryi ssp. imulus Parry's rabbitbrush Shrub  
Chrysothamnus parryi ssp. latior Parry's rabbitbrush Shrub  
Chrysothamnus parryi ssp. monocephalus Single headed parry's rabbitbrush Shrub  
Chrysothamnus parryi ssp. nevadensis Nevada parry's rabbitbrush Shrub  
Chrysothamnus parryi ssp. vulcanicus Parry's rabbitbrush Shrub  
Chrysothamnus teretifolius Terete leaved rubberbrush Shrub  
Chrysothamnus viscidiflorus Green rabbitbrush Shrub 5
Chrysothamnus viscidiflorus ssp. axillaris Sticky leaved rabbitbrush Shrub  
Chrysothamnus viscidiflorus ssp. lanceolatus Sticky leaved rabbitbrush Shrub  
Chrysothamnus viscidiflorus ssp. latifolius Sticky leaved rabbitbrush Shrub  
Chrysothamnus viscidiflorus ssp. puberulus Sticky leaved rabbitbrush Shrub  
Chrysothamnus viscidiflorus ssp. viscidiflorus Sticky leaved rabbitbrush Shrub  
Cichorium endivia Cultivated endive Annual, Biennial herb  
Cichorium intybus Chicory Perennial herb 9
Cirsium andersonii Anderson's thistle Perennial herb  
Cirsium andrewsii Franciscan thistle Perennial herb  
Cirsium arizonicum Arizona thistle Perennial herb  
Cirsium arizonicum var. arizonicum Arizona thistle Perennial herb  
Cirsium arizonicum var. tenuisectum Desert mountain thistle Perennial herb  
Cirsium arvense ! Canada thistle Perennial herb  
Cirsium brevistylum Indian thistle Perennial herb  
Cirsium canescens Prairie thistle Perennial herb  
Cirsium canovirens Gray green thistle Perennial herb  
Cirsium ciliolatum Ashland thistle Perennial herb  
Cirsium congdonii Congdon's thistle Perennial herb  
Cirsium crassicaule Slough thistle Annual, Perennial herb  
Cirsium cymosum Peregrine thistle Perennial herb  
Cirsium cymosum var. canovirens Gray-green thistle Perennial herb  
Cirsium cymosum var. cymosum Peregrine thistle Perennial herb  
Cirsium douglasii Swamp thistle Perennial herb 1
Cirsium douglasii var. breweri Brewer's swamp thistle Perennial herb  
Cirsium douglasii var. douglasii Douglas' swamp thistle Perennial herb  
Cirsium edule Edible thistle Perennial herb  
Cirsium flodmanii Flodman's thistle Perennial herb  
Cirsium fontinale Fountain thistle Perennial herb 1
Cirsium fontinale var. campylon Mt. hamilton thistle Perennial herb  
Cirsium fontinale var. fontinale Fountain thistle Perennial herb  
Cirsium fontinale var. obispoense Chorro creek bog thistle Perennial herb  
Cirsium giganteum Perennial herb  
Cirsium hydrophilum Suisun thistle Perennial herb  
Cirsium hydrophilum var. hydrophilum Suisun thistle Perennial herb  
Cirsium hydrophilum var. vaseyi Mt. Tamalpais thistle Perennial herb  
Cirsium inamoenum Greene's thistle Perennial herb  
Cirsium inamoenum var. inamoenum Greene's thistle Perennial herb  
Cirsium japonicum Japanese thistle Perennial herb  
Cirsium loncholepis La graciosa 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. candidissimum Snowy thistle Perennial herb  
Cirsium occidentale var. compactum Compact cobwebby thistle Perennial herb  
Cirsium occidentale var. coulteri Coulter's thistle Perennial herb  
Cirsium occidentale var. lucianum Cuesta ridge thistle Perennial herb  
Cirsium occidentale var. occidentale Cobweb thistle Perennial herb 1
Cirsium occidentale var. venustum Coulter's thistle Perennial herb  
Cirsium ochrocentrum Beaumont thistle Perennial herb  
Cirsium ochrocentrum var. ochrocentrum Yellowspine thistle Perennial herb  
Cirsium praeteriens Palo alto thistle Perennial herb  
Cirsium quercetorum Brownie thistle Annual, Perennial herb 1
Cirsium remotifolium Few leaved thistle Perennial herb  
Cirsium remotifolium var. odontolepis Pacific fringed thistle Perennial herb  
Cirsium remotifolium var. remotifolium Remote-leaved thistle Perennial herb  
Cirsium remotifolium var. rivulare Klamath thistle Perennial herb  
Cirsium rhothophilum Surf thistle Perennial herb  
Cirsium scabrum Rough thistle Perennial herb  
Cirsium scariosum Elk thistle Perennial herb  
Cirsium scariosum var. americanum Dinnerplate thistle Perennial herb  
Cirsium scariosum var. citrinum Southern meadow thistle Perennial herb  
Cirsium scariosum var. congdonii Elk thistle Perennial herb  
Cirsium scariosum var. loncholepis La graciosa thistle Perennial herb  
Cirsium scariosum var. robustum Elk thistle Perennial herb  
Cirsium scariosum var. scariosum Elk thistle Perennial herb  
Cirsium subniveum Jackson hole thistle Perennial herb  
Cirsium undulatum Wavy leaved thistle Perennial herb  
Cirsium vulgare ! Bullthistle Perennial herb  
Cnicus benedictus Blessed thistle Annual herb 1
Constancea nevinii Nevin's woolly sunflower Shrub 7
Conyza bilboana Horseweed Annual herb  
Conyza bonariensis South american horseweed Annual herb  
Conyza canadensis Canada horseweed Annual herb  
Conyza canadensis var. canadensis Canadian horseweed Annual herb  
Conyza canadensis var. glabrata Canadian horseweed Annual herb  
Conyza coulteri Coulter's horseweed Annual herb  
Conyza floribunda Tropical horseweed Annual herb  
Coreopsis basalis Goldenmane tickseed Perennial herb  
Coreopsis bigelovii Bigelow coreopsis Annual herb 3
Coreopsis californica var. californica California coreopsis Annual herb  
Coreopsis calliopsidea Leafy stemmed coreopsis Annual herb 3
Coreopsis douglasii Douglas' coreopsis Annual herb 1
Coreopsis gigantea Giant coreopsis Shrub 23
Coreopsis grandiflora Largeflower tickseed Perennial herb 3
Coreopsis hamiltonii Mt. hamilton coreopsis Annual herb  
Coreopsis lanceolata Garden coreopsis Perennial herb 15
Coreopsis maritima Sea dahlia Perennial herb 6
Coreopsis rosea Pink tickseed Perennial herb 2
Coreopsis stillmanii Stillman's coreopsis Annual herb 2
Coreopsis tinctoria Calliopsis Annual herb 13
Coreopsis wrightii Wright's coreopsis Annual herb  
Corethrogyne filaginifolia Common sandaster Perennial herb 20
Corethrogyne filaginifolia var. californica California sandaster Perennial herb 2
Corethrogyne filaginifolia var. filaginifolia Common sandaster Perennial herb 19
Corethrogyne filaginifolia var. incana San diego sand aster Perennial herb 9
Corethrogyne filaginifolia var. linifolia Del mar mesa sand aster Perennial herb 9
Corethrogyne leucophylla Branching beach aster Perennial herb 9
Cosmos bipinnatus Garden cosmos Annual herb 10
Cosmos sulphureus Sulphur cosmos Annual herb 7
Cota tinctoria Golden marguerite Perennial herb  
Cotula australis Brass buttons Annual herb  
Cotula coronopifolia ! Brass buttons Perennial herb 2
Cotula mexicana Mexican brassbuttons Perennial herb  
Crassocephalum crepidioides Redflower ragleaf Perennial herb  
Crepis acuminata Tall hawksbeard Perennial herb  
Crepis bakeri Baker's hawksbeard Perennial herb  
Crepis bakeri ssp. bakeri Baker's hawksbeard Perennial herb  
Crepis bakeri ssp. cusickii Cusick's hawksbeard Perennial herb  
Crepis bakeri ssp. idahoensis Idaho hawksbeard Perennial herb  
Crepis bursifolia Italian hawksbeard Perennial herb  
Crepis capillaris Smooth hawksbeard Annual, Perennial herb  
Crepis intermedia Intermediate hawksbeard Perennial herb  
Crepis modocensis Modoc hawksbeard Perennial herb  
Crepis modocensis ssp. modocensis Modoc hawksbeard Perennial herb  
Crepis modocensis ssp. subacaulis Modoc hawksbeard Perennial herb  
Crepis monticola Mountain hawk's beard Perennial herb  
Crepis nana Dwarf hawksbeard Perennial herb  
Crepis occidentalis Western hawk's beard Perennial herb  
Crepis occidentalis ssp. conjuncta Largeflower hawksbeard Perennial herb  
Crepis occidentalis ssp. costata Largeflower hawksbeard Perennial herb  
Crepis occidentalis ssp. occidentalis Largeflower hawksbeard Perennial herb  
Crepis occidentalis ssp. pumila Largeflower hawksbeard Perennial herb  
Crepis pleurocarpa Naked stemmed hawksbeard Perennial herb  
Crepis pulchra Smallflower hawksbeard Perennial herb  
Crepis rubra Red hawksbeard Annual herb 1
Crepis runcinata Meadow hawksbeard Perennial herb  
Crepis runcinata ssp. andersonii Anderson's meadow hawksbeard Perennial herb  
Crepis runcinata ssp. hallii Hall's meadow hawksbeard Perennial herb  
Crepis runcinata ssp. imbricata Fiddleleaf hawksbeard Perennial herb  
Crepis setosa Rough hawksbeard Annual herb  
Crepis tectorum Narrowleaf hawksbeard Annual herb  
Crepis vesicaria Beaked hawksbeard Annual, Perennial herb  
Crepis vesicaria ssp. taraxacifolia Weedy hawksbeard Annual, Perennial herb  
Crocidium multicaule Spring gold Annual herb  
Crupina vulgaris ! Bearded creeper Annual herb  
Cuniculotinus gramineus Panamint rock goldenrod Perennial herb  
Cyclachaena xanthiifolia Giant sumpweed Annual herb  
Cynara cardunculus ! Cardoon Perennial herb 2
Cynara cardunculus ssp. cardunculus Artichoke Perennial herb 1
Cynara cardunculus ssp. flavescens Cardoon Perennial herb  
Cynara scolymus Globe or garden artichoke Perennial herb 1
Deinandra arida Red rock tarplant Annual herb  
Deinandra bacigalupi Livermore tarplant Annual herb  
Deinandra bacigalupii Livermore moonshine Annual herb  
Deinandra clementina Island tarplant Shrub  
Deinandra conjugens Otay tarplant Annual herb  
Deinandra corymbosa Coastal tarweed Annual herb 2
Deinandra corymbosa ssp. corymbosa Coastal tarweed Annual herb  
Deinandra corymbosa ssp. macrocephala Coastal tarweed Annual herb  
Deinandra fasciculata Clustered tarweed Annual herb 5
Deinandra floribunda Tecate tarplant Annual herb  
Deinandra halliana Hall's tarplant Annual herb  
Deinandra increscens Grassland tarweed Annual herb  
Deinandra increscens ssp. foliosa Leafy tarplant Annual herb  
Deinandra increscens ssp. increscens Grassland tarweed Annual herb  
Deinandra increscens ssp. villosa Gaviota tarplant Annual herb  
Deinandra kelloggii Kellogg's tarweed Annual herb 1
Deinandra lobbii Threeray tarweed Annual herb  
Deinandra minthornii Santa susana tarplant Shrub 1
Deinandra mohavensis Mojave tarplant Annual herb 1
Deinandra pallida Kern tarweed Annual herb  
Deinandra paniculata Paniculate tarplant Annual herb 2
Deinandra pentactis Salinas river tarweed Annual herb  
Delairea odorata ! Cape ivy Perennial herb  
Dendranthema Xgrandiflorum Florist's daisy Shrub  
Dendranthema grandiflorum Florist's daisy Shrub 1
Dicoria canescens Desert dicoria Annual herb  
Dieteria asteroides Hoary aster Perennial herb  
Dieteria asteroides var. asteroides Hoary aster Perennial herb  
Dieteria asteroides var. lagunensis Mount laguna aster Perennial herb  
Dieteria canescens Hoary aster Perennial herb 1
Dieteria canescens var. canescens Hoary aster Perennial herb  
Dieteria canescens var. incana Hoary aster Perennial herb  
Dieteria canescens var. leucanthemifolia Hoary aster Perennial herb  
Dieteria canescens var. shastensis Shasta aster Perennial herb  
Dieteria canescens var. ziegleri Ziegler's aster Perennial herb  
Dimeresia howellii Doublet Annual herb  
Dimorphotheca ecklonis Blue & white daisybush Perennial herb 1
Dimorphotheca fruticosa Trailing african daisy Perennial herb 2
Dimorphotheca pluvialis Weather prophet Annual herb 1
Dimorphotheca sinuata African daisy Annual herb 4
Dittrichia graveolens ! Stinkwort Annual herb  
Dittrichia viscosa ! False yellowhead Perennial herb  
Dugaldia hoopesii Hoope's sneezeweed Perennial herb 6
Dyssodia papposa Fetid marigold Annual herb  
Dyssodia tenuiloba var. tenuiloba Annual herb  
Eastwoodia elegans Yellow mock aster Shrub  
Eatonella nivea White eatonella Annual herb  
Echinops exaltatus Tall globethistle Perennial herb 1
Echinops sphaerocephalus Globe thistle Perennial herb 4
Eclipta prostrata False daisy Annual herb 1
Emilia fosbergii Florida tasselflower Annual herb  
Emilia sonchifolia Lilac tasselflower Annual herb  
Encelia actoni Acton encelia Shrub 2
Encelia californica Bush sunflower Shrub 27
Encelia californica X Encelia farinosa Shrub  
Encelia farinosa Brittlebush Shrub 22
Encelia farinosa X Encelia frutescens Shrub  
Encelia farinosa X frutescens Hybrid encelia Shrub  
Encelia frutescens Rayless encelia Shrub 3
Encelia virginensis Virgin river encelia Shrub  
Enceliopsis covillei Panamint daisy Perennial herb  
Enceliopsis nudicaulis Naked stemmed daisy Perennial herb  
Enceliopsis nudicaulis var. corrugata Nakedstem sunray Perennial herb, Shrub  
Enceliopsis nudicaulis var. nudicaulis Nakedstem sunray Perennial herb, Shrub  
Erechtites glomerata Australasian fireweed Annual, Perennial herb  
Erechtites hieraciifolia American burnweed Annual, Perennial herb  
Erechtites hieraciifolia var. hieraciifolia Hairy leaved erechtites Annual, Perennial herb  
Erechtites hieraciifolius American Burnweed Annual herb  
Erechtites minima Australian fireweed Annual, Perennial herb  
Ericameria Xbolanderi Shrub  
Ericameria Xviscosa Shrub  
Ericameria albida White flowered rabbitbrush Shrub  
Ericameria arborescens Golden fleece Shrub 3
Ericameria bloomeri Bloomer's goldenbrush Shrub  
Ericameria brachylepis Boundary goldenbush Shrub  
Ericameria cooperi Cooper's goldenbush Shrub 3
Ericameria cooperi var. cooperi Cooper goldenbush Shrub 3
Ericameria cuneata Rock goldenbush Shrub 2
Ericameria cuneata var. cuneata Rock goldenbush Shrub 1
Ericameria cuneata var. macrocephala Laguna mtns. goldenbush Shrub  
Ericameria cuneata var. spathulata Wide leaved rock goldenbush Shrub  
Ericameria discoidea Rayless goldenbush Shrub  
Ericameria discoidea var. discoidea Whitestem goldenbush Shrub  
Ericameria ericoides Mock heather Shrub 16
Ericameria fasciculata Eastwood's goldenbush Shrub 1
Ericameria gilmanii Gilman's goldenbush Shrub  
Ericameria greenei Greene's goldenbush Shrub 1
Ericameria laricifolia Turpentine brush Shrub 6
Ericameria linearifolia Interior goldenbush Shrub 7
Ericameria nana Dwarf goldenbush Shrub  
Ericameria nauseosa Rubber rabbitbrush Shrub 23
Ericameria nauseosa ssp. consimilis Rubber rabbitbrush Shrub  
Ericameria nauseosa var. bernardina San bernardino rubber rabbitbrush Shrub  
Ericameria nauseosa var. ceruminosa Sharp bracted rabbitbrush Shrub  
Ericameria nauseosa var. hololeuca Common rabbitbrush Shrub  
Ericameria nauseosa var. leiosperma Common rabbitbrush Shrub  
Ericameria nauseosa var. mohavensis Mojave rabbitbrush Shrub  
Ericameria nauseosa var. oreophila Rubber rabbitbrush Shrub  
Ericameria nauseosa var. speciosa Rubber rabbitbrush Shrub  
Ericameria nauseosa var. washoensis Rubber rabbitbrush Shrub  
Ericameria ophitidis Serpentine macronema Shrub  
Ericameria palmeri Palmer goldenweed Shrub 4
Ericameria palmeri ssp. palmeri Palmer's goldenbush Shrub  
Ericameria palmeri var. pachylepis Broad scaled palmer's goldenbush Shrub  
Ericameria palmeri var. palmeri Palmer's goldenbush Shrub  
Ericameria paniculata Mojave rabbitbrush Perennial herb 1
Ericameria parishii Parish's rabbitbrush Shrub 1
Ericameria parishii var. parishii Parish's goldenbush Shrub 1
Ericameria parryi Parry's rabbitbrush Shrub  
Ericameria parryi var. aspera Rough parry's rabbitbrush Shrub  
Ericameria parryi var. aspra Parry's rabbitbrush Shrub  
Ericameria parryi var. imula Parry's rabbitbrush Shrub  
Ericameria parryi var. latior Parry's rabbitbrush Shrub  
Ericameria parryi var. monocephala Parry's rabbitbrush Shrub  
Ericameria parryi var. nevadensis Parry's rabbitbrush Shrub  
Ericameria parryi var. vulcanica Parry's rabbitbrush Shrub  
Ericameria pinifolia Pine bush Shrub 4
Ericameria suffruticosa Heath goldenrod Shrub  
Ericameria teretifolia Green rabbitbrush Shrub  
Erigeron acris Bitter fleabane Perennial herb  
Erigeron aequifolius Hall's daisy Perennial herb (rhizomatous)  
Erigeron algidus Stalked fleabane Perennial herb  
Erigeron aliceae Alice eastwood's fleabane Perennial herb  
Erigeron angustatus Narrow leaved daisy Perennial herb  
Erigeron annuus Annual fleabane Annual herb  
Erigeron aphanactis Rayless shaggy fleabane Perennial herb  
Erigeron aphanactis var. aphanactis Rayless shaggy fleabane Perennial herb  
Erigeron aphanactis var. congestus Clustered fleabane Perennial herb  
Erigeron argentatus Silver fleabane Perennial herb  
Erigeron austiniae Rebecca austin's fleabane Perennial herb  
Erigeron barbellulatus Shining daisy Perennial herb  
Erigeron biolettii Streamside daisy Perennial herb  
Erigeron blochmaniae Blochman's leafy daisy Perennial herb (rhizomatous)  
Erigeron bloomeri Scabland fleabane Perennial herb  
Erigeron bloomeri var. bloomeri Scabland fleabane Perennial herb  
Erigeron bloomeri var. nudatus Waldo daisy Perennial herb  
Erigeron bonariensis Flax-leaved horseweed Annual herb  
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. klamathensis Klamath fleabane Perennial herb  
Erigeron breweri var. porphyreticus Fleabane Perennial herb  
Erigeron calvus Bald daisy Perennial herb  
Erigeron canadensis Canada horseweed Annual herb  
Erigeron cervinus Siskiyou daisy Perennial herb (rhizomatous)  
Erigeron chrysopsidis Dwarf yellow fleabane Perennial herb 1
Erigeron chrysopsidis var. austiniae Rebecca austin's fleabane Perennial herb  
Erigeron clokeyi Clokey's fleabane Perennial herb  
Erigeron clokeyi var. pinzliae Clokey's fleabane Perennial herb  
Erigeron compactus Fern leaved fleabane Perennial herb  
Erigeron compactus var. compactus Cushion daisy Perennial herb  
Erigeron compositus Cut leaved daisy Perennial herb 3
Erigeron concinnus Navajo fleabane Shrub (stem succulent)  
Erigeron concinnus var. concinnus Shaggy daisy Shrub (stem succulent)  
Erigeron concinnus var. condensatus Clustered navajo fleabane Shrub (stem succulent)  
Erigeron coulteri Coulter's daisy Perennial herb  
Erigeron decumbens var. robustior Robust daisy Perennial herb  
Erigeron disparipilus White cushion fleabane Perennial herb  
Erigeron divergens Diffuse daisy Biennial, Perennial herb 3
Erigeron eatonii Eaton's daisy Perennial herb  
Erigeron eatonii var. nevadincola Nevada daisy Perennial herb  
Erigeron eatonii var. plantagineus Eaton's daisy Perennial herb  
Erigeron eatonii var. sonnei Sonne's daisy Perennial herb  
Erigeron elegantulus Volcanic daisy Perennial herb  
Erigeron elmeri Elmer's erigeron Perennial herb  
Erigeron filifolius Threadleaf fleabane Perennial herb  
Erigeron filifolius var. filifolius Thread leaved fleabane Perennial herb  
Erigeron flagellaris Trailing fleabane Perennial herb  
Erigeron foliosus Leafy daisy Perennial herb  
Erigeron foliosus var. confinis Leafy fleabane 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 foliosus var. mendocinus Mendocino fleabane Perennial herb  
Erigeron formosissimus Beautiful fleabane Perennial herb 1
Erigeron glacialis Wandering fleabane Perennial herb 3
Erigeron glacialis var. glacialis Wandering fleabane Perennial herb  
Erigeron glacialis var. hirsutus Wandering fleabane Perennial herb  
Erigeron glaucus Seaside daisy Perennial herb 39
Erigeron greenei Greene's narrow-leaved daisy Perennial herb  
Erigeron inornatus Rayless fleabane Perennial herb  
Erigeron inornatus var. calidipetris Hot rock daisy Perennial herb  
Erigeron inornatus var. inornatus Fleabane Perennial herb  
Erigeron inornatus var. keilii Keil's daisy Perennial herb  
Erigeron karvinskianus Latin american fleabane Perennial herb 16
Erigeron klamathensis Klamath fleabane Perennial herb  
Erigeron lassenianus Mt. lassen fleabane Perennial herb  
Erigeron lassenianus var. deficiens Mt. lassen fleabane Perennial herb  
Erigeron lassenianus var. lassenianus Mt. lassen daisy Perennial herb  
Erigeron linearis Narrow leaved fleabane Perennial herb 3
Erigeron lobatus Lobed fleabane Perennial herb 3
Erigeron lonchophyllus Shortray fleabane Perennial herb  
Erigeron maniopotamicus Mad river fleabane daisy Perennial herb  
Erigeron mariposanus Mariposa daisy Perennial herb  
Erigeron miser Starved daisy Perennial herb  
Erigeron multiceps Kern river daisy Perennial herb  
Erigeron neomexicanus New mexico fleabane Annual herb  
Erigeron nevadincola Nevada daisy Perennial herb  
Erigeron nivalis Northern daisy Perennial herb  
Erigeron oxyphyllus Wand fleabane Perennial herb  
Erigeron parishii Parish fleabane Perennial herb  
Erigeron peregrinus Wandering fleabane Perennial herb 3
Erigeron peregrinus var. callianthemus Wandering fleabane Perennial herb  
Erigeron peregrinus var. hirsutus Wandering fleabane Perennial herb  
Erigeron petrophilus Cliff fleabane Perennial herb  
Erigeron petrophilus var. petrophilus Cliff fleabane Perennial herb  
Erigeron petrophilus var. sierrensis Northern sierra daisy Perennial herb (rhizomatous)  
Erigeron petrophilus var. viscidulus Klamath daisy Perennial herb (rhizomatous)  
Erigeron philadelphicus Philadelphia fleabane Perennial herb  
Erigeron philadelphicus var. philadelphicus Philadelphia fleabane Perennial herb  
Erigeron pumilus Shaggy fleabane Perennial herb  
Erigeron pumilus ssp. intermedius Shaggy fleabane Perennial herb  
Erigeron pumilus var. gracilior Shaggy fleabane Perennial herb  
Erigeron pumilus var. intermedius Shaggy fleabane Perennial herb  
Erigeron pygmaeus Pygmy fleabane Perennial herb  
Erigeron radicatus Taproot fleabane Annual herb  
Erigeron reductus Fleabane Perennial herb  
Erigeron reductus var. angustatus Pine erigeron Perennial herb  
Erigeron reductus var. reductus California rayless daisy Perennial herb  
Erigeron robustior Willamette fleabane Perennial herb  
Erigeron sanctarum Saints' daisy Perennial herb (rhizomatous)  
Erigeron serpentinus Serpentine daisy Perennial herb  
Erigeron strigosus Prairie fleabane Annual, Perennial herb  
Erigeron strigosus var. septentrionalis Prairie fleabane Annual, Perennial herb  
Erigeron strigosus var. strigosus Prairie fleabane Annual, Perennial herb  
Erigeron sumatrensis Tropical horseweed Annual herb  
Erigeron supplex Supple daisy Perennial herb  
Erigeron tener Slender fleabane Perennial herb  
Erigeron uncialis Limestone daisy Perennial herb  
Erigeron uncialis var. uncialis Limestone daisy Perennial herb  
Erigeron utahensis Utah fleabane Perennial herb  
Erigeron vagus Rambling fleabane Perennial herb  
Eriophyllum ambiguum Annual woolly sunflower Annual herb  
Eriophyllum ambiguum var. ambiguum Annual woolly sunflower Annual herb  
Eriophyllum ambiguum var. paleaceum Annual woolly sunflower Annual herb  
Eriophyllum confertiflorum Yellow yarrow Shrub 20
Eriophyllum confertiflorum var. confertiflorum Golden yarrow Shrub 1
Eriophyllum confertiflorum var. tanacetiflorum Tansy yarrow Shrub  
Eriophyllum congdonii Congdon's woolly sunflower Annual herb  
Eriophyllum jepsonii Jepson's woolly sunflower Perennial herb 1
Eriophyllum lanatum Wooly sunflower Perennial herb 27
Eriophyllum lanatum var. achillaeoides Yarrow leaved woolly sunflower Perennial herb 2
Eriophyllum lanatum var. achilleoides Yarrow leaved woolly sunflower Perennial herb 2
Eriophyllum lanatum var. aphanactis Woolly sunflower Perennial herb  
Eriophyllum lanatum var. arachnoideum Wooly sunflower Perennial herb 3
Eriophyllum lanatum var. croceum Sierra woolly sunflower Perennial herb  
Eriophyllum lanatum var. grandiflorum Large flowered woolly sunflower Perennial herb 1
Eriophyllum lanatum var. hallii Fort tejon woolly sunflower Perennial herb  
Eriophyllum lanatum var. integrifolium Oregon sunshine Perennial herb  
Eriophyllum lanatum var. lanatum Common woolly sunflower Perennial herb  
Eriophyllum lanatum var. lanceolatum Lance leaved woolly sunflower Perennial herb  
Eriophyllum lanatum var. leucophyllum Common woolly sunflower Perennial herb  
Eriophyllum lanatum var. obovatum Southern sierra woolly sunflower Perennial herb  
Eriophyllum lanosum White easter bonnets Annual herb  
Eriophyllum latilobum San mateo woolly sunflower Perennial herb  
Eriophyllum mohavense Barstow woolly sunflower Annual herb  
Eriophyllum multicaule Many stemmed eriophyllum Annual herb  
Eriophyllum nevinii Silverlace Shrub 7
Eriophyllum nubigenum Yosemite woolly sunflower Annual herb  
Eriophyllum pringlei Pringle eriophyllum Annual herb  
Eriophyllum staechadifolium Lizard tail Perennial herb 18
Eriophyllum wallacei Wallace eriophyllum Annual herb  
Eucephalus breweri Brewer's aster Perennial herb  
Eucephalus engelmannii Engelmann's aster Perennial herb 2
Eucephalus glabratus Smooth aster Perennial herb  
Eucephalus ledophyllus Cascade aster Perennial herb  
Eucephalus ledophyllus var. covillei Cascade aster Perennial herb  
Eucephalus tomentellus Rayless aster Perennial herb  
Eucephalus vialis Wayside aster Perennial herb  
Euchiton gymnocephalus Creeping cudweed Perennial herb  
Euchiton involucratus Annual herb  
Euchiton japonicus Father and child plant Annual herb  
Euchiton sphaericus Tropical creeping cudweed Annual herb  
Euphrosyne acerosa Copperwort Perennial herb  
Euphrosyne nevadensis Nevada wormwood Annual herb  
Eurybia integrifolia Thickstem aster Perennial herb  
Eurybia merita Subalpine aster Perennial herb  
Eurybia radulina Roughleaf aster Perennial herb 2
Euryops pectinatus Golden daisy bush Shrub 6
Euthamia occidentalis Western goldenrod Perennial herb 15
Felicia amelloides Blue daisy Perennial herb 1
Filago arizonica Arizona filago Annual herb  
Filago californica California filago Annual herb  
Filago depressa Dwarf filago Annual herb  
Filago gallica Narrow leaved filago Annual herb  
Filago pyramidata Broadleaf cottonrose Annual herb  
Filago pyramidata var. pyramidata Herba impia Annual herb  
Flaveria trinervia Clustered yellow tops Annual herb  
Gaillardia Xgrandiflora Annual herb  
Gaillardia aristata Common indian blanket Perennial herb 17
Gaillardia pinnatifida Red dome blanketflower Annual herb 2
Gaillardia pulchella Firewheel indian blanket Annual herb 8
Gaillardia pulchella var. picta Firewheel Annual herb  
Galinsoga parviflora Gallant soldier Annual herb  
Galinsoga parviflora var. parviflora Few flowered galinsoga Annual herb  
Galinsoga quadriradiata Four pointed galinsoga Annual herb  
Gamochaeta argyrinea Silver Cudweed Perennial herb  
Gamochaeta calviceps Narrowleaf purple everlasting Perennial herb  
Gamochaeta coarctata Gray everlasting Perennial herb  
Gamochaeta pensylvanica Pennsylvania everlasting Perennial herb  
Gamochaeta stachydifolia Perennial herb  
Gamochaeta stagnalis Perennial herb  
Gamochaeta ustulata Featherweed Perennial herb  
Gazania linearis ! Gazania Perennial herb  
Geraea canescens Hairy desert sunflower Annual herb 1
Geraea viscida Sticky geraea Perennial herb 1
Gerbera jamesonii Barberton daisy Perennial herb  
Glebionis coronaria ! Crown daisy Annual herb 2
Glebionis segetum Corndaisy Annual herb  
Glyptopleura marginata Keysia Annual herb  
Glyptopleura setulosa Holy dandelion Annual herb  
Gnaphalium californicum California everlasting Annual, Perennial herb 11
Gnaphalium canescens Everlasting cudweed Perennial herb 3
Gnaphalium canescens ssp. beneolens Cudweed Perennial herb 1
Gnaphalium canescens ssp. canescens Everlasting cudweed Perennial herb  
Gnaphalium canescens ssp. microcephalum White everlasting Perennial herb 1
Gnaphalium canescens ssp. thermale Small headed cudweed Perennial herb  
Gnaphalium japonicum Japanese cudweed Annual herb  
Gnaphalium leucocephalum White headed cudweed Perennial herb  
Gnaphalium luteo-album Common cudweed Annual herb  
Gnaphalium luteoalbum Jersey cudweed Annual herb  
Gnaphalium macounii Macoun's cudweed Annual, Perennial herb  
Gnaphalium palustre Lowland cudweed Annual herb  
Gnaphalium purpureum Purple cudweed Annual, Perennial herb  
Gnaphalium ramosissimum Pink everlasting Biennial herb 1
Gnaphalium stramineum Cotton batting Annual, Perennial herb 3
Grindelia Xpaludosa Suisun gumplant Perennial herb  
Grindelia camporum Gumweed Perennial herb 15
Grindelia camporum var. bracteosa Bract gumweed Perennial herb 14
Grindelia camporum var. camporum Great valley gumweed Perennial herb 15
Grindelia ciliata Annual, Perennial herb  
Grindelia fraxinipratensis Ash meadows gumplant Perennial herb  
Grindelia fraxino-pratensis Ash meadows gumplant Perennial herb  
Grindelia hallii San diego gumplant Perennial herb  
Grindelia hirsutula Gumweed Perennial herb 12
Grindelia hirsutula var. davyi Davy's gumweed Perennial herb 14
Grindelia hirsutula var. hallii San diego gumplant Perennial herb  
Grindelia hirsutula var. hirsutula Hairy gumweed Perennial herb 13
Grindelia hirsutula var. maritima San francisco gumplant Perennial herb 13
Grindelia nana Idaho gumweed Perennial herb  
Grindelia nana var. nana Idaho gumweed Perennial herb  
Grindelia nuda Curlytop gumweed Perennial herb  
Grindelia papposa Spanish gold Annual, Biennial herb  
Grindelia squarrosa Curlycup gumweed Perennial herb  
Grindelia squarrosa var. quasiperennis Curlycup gumweed Perennial herb  
Grindelia squarrosa var. serrulata Curlycup gumweed Perennial herb  
Grindelia squarrosa var. squarrosa Curlycup gumweed Perennial herb  
Grindelia stricta Gumweed Perennial herb 26
Grindelia stricta var. angustifolia Marsh gumplant Perennial herb 6
Grindelia stricta var. platyphylla Gumplant Perennial herb 16
Grindelia stricta var. stricta Coastal gum plant Perennial herb 4
Guizotia abyssinica Ramtilla Annual herb  
Gutierrezia californica Matchweed, snakeweed Perennial herb, Shrub 6
Gutierrezia microcephala Sticky snakeweed Shrub (stem succulent)  
Gutierrezia sarothrae Matchweed Shrub 6
Harmonia doris-nilesiae Niles's harmonia Annual herb  
Harmonia guggolziorum Guggolz's harmonia Annual herb  
Harmonia hallii Hall's harmonia Annual herb  
Harmonia nutans Nodding harmonia Annual herb  
Harmonia stebbinsii Stebbins's harmonia Annual herb  
Hazardia brickellioides Brickellia leaved hazardia Shrub  
Hazardia cana San clemente island hazardia Shrub 1
Hazardia detonsa Island hazardia Shrub 3
Hazardia orcuttii Orcutt's hazardia Shrub  
Hazardia squarrosa Saw toothed goldenbush Shrub 10
Hazardia squarrosa var. grindelioides Gum plant goldenbush Shrub 1
Hazardia squarrosa var. obtusa Saw toothed goldenbush Shrub  
Hazardia squarrosa var. squarrosa Saw toothed goldenbush Shrub  
Hazardia stenolepis Narrow scaled goldenbush Shrub (stem succulent)  
Hazardia whitneyi Whitney's bristleweed Perennial herb  
Hazardia whitneyi var. discoidea Rayless whitney's goldenbush Perennial herb  
Hazardia whitneyi var. whitneyi Whitney's goldenbush Perennial herb  
Hecastocleis shockleyi Shockley's prickleleaf Shrub  
Hedypnois cretica Crete weed Annual herb  
Hedypnois rhagadioloides Crete weed Annual herb  
Helenium amarum Yellow sneezeweed Annual herb  
Helenium amarum var. amarum Yellowdicks Annual herb  
Helenium autumnale Common sneezeweed Perennial herb 8
Helenium autumnale var. grandiflorum Large flowered autumn sneezeweed Perennial herb 8
Helenium autumnale var. montanum Montane autumn sneezeweed Perennial herb 8
Helenium bigelovii Bigelow's sneezeweed Perennial herb 8
Helenium bolanderi Bolander's sneezeweed Perennial herb  
Helenium puberulum Sneezeweed Perennial herb 10
Helenium thurberi Thurber's sneezeweed Annual herb  
Helianthella californica California helianthella Perennial herb 3
Helianthella californica var. californica California helianthella Perennial herb  
Helianthella californica var. nevadensis California helianthella Perennial herb  
Helianthella californica var. shastensis Shasta helianthella Perennial herb  
Helianthella castanea Diablo helianthella Perennial herb 2
Helianthus angustifolius Swamp sunflower Annual, Perennial herb 4
Helianthus annuus Hairy leaved sunflower Annual herb 17
Helianthus bolanderi Bolander's sunflower Annual, Perennial herb 2
Helianthus californicus California sunflower Perennial herb 6
Helianthus ciliaris Blueweed Perennial herb  
Helianthus cusickii Cusick's sunflower Perennial herb  
Helianthus exilis Serpentine sunflower Annual herb 2
Helianthus gracilentus Slender sunflower Perennial herb 4
Helianthus inexpectatus Newhall sunflower Perennial herb  
Helianthus laciniatus Alkali sunflower Annual, Perennial herb  
Helianthus maximilianii Maximilian sunflower Perennial herb 1
Helianthus niveus Desert sunflower Annual, Perennial herb 1
Helianthus niveus ssp. canescens Gray desert sunflower Annual, Perennial herb  
Helianthus niveus ssp. tephrodes Algodones dunes sunflower Perennial herb  
Helianthus nuttallii Nuttall's sunflower Perennial herb  
Helianthus nuttallii ssp. nuttallii Nuttall's sunflower Perennial herb  
Helianthus nuttallii ssp. parishii Los angeles sunflower Perennial herb (rhizomatous)  
Helianthus petiolaris Prairie sunflower Perennial herb  
Helianthus petiolaris ssp. canescens Gray desert sunflower Annual, Perennial herb  
Helianthus petiolaris ssp. petiolaris Prairie sunflower Perennial herb  
Helianthus tuberosus ! Jerusalem artichoke Perennial herb  
Helianthus winteri Winter's sunflower Shrub  
Helichrysum petiolare ! Licorice plant Shrub, Vine 5
Heliomeris hispida Hairy golden eye Annual herb  
Heliomeris multiflora Showy goldeneye Perennial herb 1
Heliomeris multiflora var. multiflora Showy goldeneye Perennial herb, Shrub  
Heliomeris multiflora var. nevadensis Golden eye Perennial herb  
Helipterum roseum Annual herb 1
Helminthotheca echioides ! Bristly ox-tongue Annual, Perennial herb  
Hemizonella minima Opposite leaved tarweed Annual herb  
Hemizonia arida Red rock tarplant Annual herb  
Hemizonia clementina Island tarplant Shrub  
Hemizonia congesta Hayfield tarweed Annual herb 7
Hemizonia congesta ssp. calyculata Mendocino tarplant Annual herb  
Hemizonia congesta ssp. clevelandii Cleveland's tarweed Annual herb  
Hemizonia congesta ssp. congesta Hayfield tarweed Annual herb 2
Hemizonia congesta ssp. leucocephala Hayfield tarplant Annual herb  
Hemizonia congesta ssp. lutescens Hayfield tarweed Annual herb 2
Hemizonia congesta ssp. luzulifolia Woodrush tarweed Annual herb 6
Hemizonia congesta ssp. tracyi Tracy's tarplant Annual herb  
Hemizonia conjugens Otay tarplant Annual herb  
Hemizonia corymbosa Coastal tarweed Annual herb 2
Hemizonia corymbosa ssp. corymbosa Central coast tarweed Annual herb  
Hemizonia corymbosa ssp. macrocephala Central coast tarweed Annual herb  
Hemizonia fasciculata Common tarweed Annual herb 5
Hemizonia fitchii Spikeweed Annual herb  
Hemizonia floribunda Tecate tarplant Annual herb  
Hemizonia halliana Hall's tarplant Annual herb  
Hemizonia increscens Grassland tarweed Annual herb  
Hemizonia increscens ssp. foliosa Leafy grassland tarweed Annual herb  
Hemizonia increscens ssp. increscens Coast tarplant Annual herb  
Hemizonia increscens ssp. villosa Gaviota tarplant Annual herb  
Hemizonia kelloggii Kellogg's tarweed Annual herb 1
Hemizonia lobbii Three raped tarweed Annual herb  
Hemizonia minthornii Santa susana tarplant Shrub 1
Hemizonia mohavensis Mojave tarplant 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 parryi ssp. congdonii Congdon's tarplant Annual herb  
Hemizonia parryi ssp. parryi Parry's tarweed Annual herb  
Hemizonia parryi ssp. rudis Parry's red tarplant Annual herb  
Hemizonia pentactis Salinas river tarweed Annual herb  
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 acaulis Dwarf evax Annual herb  
Hesperevax acaulis var. acaulis Dwarf evax Annual herb  
Hesperevax acaulis var. ambusticola Fire evax Annual herb  
Hesperevax acaulis var. robustior Big evax Annual herb  
Hesperevax caulescens Hogwallow starfish Annual herb  
Hesperevax sparsiflora Few flowered evax Annual herb  
Hesperevax sparsiflora var. brevifolia Short leaved evax Annual herb  
Hesperevax sparsiflora var. sparsiflora Few flowered evax Annual herb  
Heteranthemis viscidehirta Sand chrysanthemum Annual herb  
Heteranthemis viscidihirta Sand chrysanthemum Annual herb  
Heterotheca grandiflora Telegraph weed Annual, Perennial herb 3
Heterotheca monarchensis Sequoia false goldenaster Perennial herb  
Heterotheca oregona Oregon golden aster Perennial herb  
Heterotheca oregona var. compacta Compact oregon goldenaster Perennial herb  
Heterotheca oregona var. oregona Oregon goldenaster Perennial herb  
Heterotheca oregona var. rudis Red oregon goldenaster Perennial herb  
Heterotheca oregona var. scaberrima Rough oregon goldenaster Perennial herb  
Heterotheca psammophila Camphor weed Annual, Perennial herb 1
Heterotheca sessiliflora Golden aster Annual, Perennial herb 11
Heterotheca sessiliflora ssp. bolanderi Golden aster Perennial herb 6
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 sessiliflora var. bolanderoides False bolander's goldenaster Perennial herb  
Heterotheca shevockii Shevock's golden aster Perennial herb  
Heterotheca subaxillaris Camphorweed Perennial herb 1
Heterotheca subaxillaris ssp. latifolia Camphor weed Annual, Perennial herb  
Heterotheca villosa Hairy goldenaster Perennial herb 12
Heterotheca villosa var. hispida Hairy goldenaster Perennial herb  
Heterotheca villosa var. minor Hairy false goldenaster Perennial herb  
Heterotheca villosa var. scabra Rough hairy goldenaster Perennial herb  
Heterotheca villosa var. shevockii Shevock's hairy golden aster Perennial herb  
Heterotheca villosa var. villosa Hairy goldenaster Perennial herb 3
Hieracium albiflorum White flowered hawkweed Perennial herb 2
Hieracium argutum Hawkweed Perennial herb  
Hieracium aurantiacum Orange flowered hawkweed Perennial herb  
Hieracium bolanderi Bolander's hawkweed Perennial herb  
Hieracium gracile Alpine hawkweed Perennial herb  
Hieracium greenei Greene's hawkweed Perennial herb  
Hieracium horridum Shaggy hawkweed Perennial herb  
Hieracium nudicaule Naked stemmed scouler's hawkweed Perennial herb  
Hieracium parryi Scouler's woollyweed Perennial herb  
Hieracium scouleri Hounds tongue hawkweed Perennial herb  
Hieracium scouleri var. nudicaule Naked stemmed scouler's hawkweed Perennial herb  
Hieracium triste Woolly hawkweed Perennial herb  
Holocarpha heermannii Heermann's tarweed Annual herb  
Holocarpha macradenia Santa cruz tarplant Annual herb  
Holocarpha obconica San joaquin tarweed Annual herb  
Holocarpha obconica ssp. autumnalis Autumn san joaquin tarweed Annual herb  
Holocarpha obconica ssp. obconica San joaquin tarweed Annual herb  
Holocarpha virgata Narrow tarplant Annual herb  
Holocarpha virgata ssp. elongata Graceful tarplant Annual herb  
Holocarpha virgata ssp. virgata Narrow tarplant Annual herb  
Holozonia filipes Holozonia Perennial herb  
Hulsea algida High mountain hulsea Perennial herb  
Hulsea brevifolia Short leaved hulsea Perennial herb  
Hulsea californica San diego sunflower Perennial herb  
Hulsea heterochroma Red rayed hulsea Perennial herb 1
Hulsea mexicana Mexican hulsea Annual, Perennial herb  
Hulsea nana Dwarf hulsea Perennial herb  
Hulsea vestita Pumice hulsea Perennial herb  
Hulsea vestita ssp. callicarpha Beautiful hulsea Perennial herb  
Hulsea vestita ssp. gabrielensis San gabriel mtns. sunflower Perennial herb  
Hulsea vestita ssp. inyoensis Inyo hulsea Perennial herb  
Hulsea vestita ssp. parryi Parry's hulsea Perennial herb  
Hulsea vestita ssp. pygmaea Pygmy hulsea Perennial herb  
Hulsea vestita ssp. vestita Pumice hulsea Perennial herb  
Hymenoclea monogyra Leafy burrobrush Shrub  
Hymenoclea salsola Burrobrush Shrub 6
Hymenoclea salsola var. pentalepis Five scaled burrobrush Shrub  
Hymenoclea salsola var. salsola Burrobrush Shrub  
Hymenopappus filifolius Columbia cutleaf Perennial herb  
Hymenopappus filifolius var. eriopodus Hairy podded columbia cutleaf Perennial herb  
Hymenopappus filifolius var. lugens Columbia cutleaf Perennial herb  
Hymenopappus filifolius var. megacephalus Large headed columbia cutleaf Perennial herb  
Hymenopappus filifolius var. nanus Dwarf columbia cutleaf Perennial herb  
Hymenothrix dissecta Ragged leaf bahia Perennial herb  
Hymenothrix loomisii Loomis' thimblehead Annual, Perennial herb  
Hymenothrix wrightii Wright's thimblehead Perennial herb  
Hymenoxys acaulis var. arizonica Arizona hymenoxys Perennial herb 1
Hymenoxys cooperi Cooper's goldflower Perennial herb  
Hymenoxys cooperi var. canescens Gray cooper's goldflower Perennial herb  
Hymenoxys cooperi var. cooperi Cooper's rubberweed Perennial herb  
Hymenoxys hoopesii Owl's claws Perennial herb 9
Hymenoxys lemmonii Lemmon's goldflower Perennial herb  
Hymenoxys odorata Fragrant bitter weed Annual herb  
Hypochaeris glabra ! Smooth cats ear Annual herb  
Hypochaeris radicata ! Hairy cats ear Perennial herb  
Inula helenium Elecampane Perennial herb 3
Ionactis alpina Lava aster Perennial herb  
Ismelia carinata Tricolor daisy Annual herb 7
Isocoma acradenia Alkali goldenbush Shrub  
Isocoma acradenia var. acradenia Alkali goldenbush Shrub  
Isocoma acradenia var. bracteosa Bracted alkali goldenbush Shrub  
Isocoma acradenia var. eremophila Solitary leaved alkali goldenbush Shrub  
Isocoma arguta Carquinez goldenbush Shrub  
Isocoma menziesii White flowered goldenbush Shrub 15
Isocoma menziesii var. decumbens Decumbent goldenbush Shrub 1
Isocoma menziesii var. diabolica Satan's goldenbush Shrub  
Isocoma menziesii var. menziesii Menzies' goldenbush Shrub 4
Isocoma menziesii var. sedoides White flowered dune goldenbush Shrub 1
Isocoma menziesii var. vernonioides Green leaved dune goldenbush Shrub  
Isocoma veneta Shrub 14
Iva acerosa Rush wormwood Perennial herb  
Iva axillaris Povertyweed Perennial herb  
Iva axillaris ssp. robustior Poverty weed Perennial herb  
Iva hayesiana San diego marsh elder Perennial herb 13
Iva nevadensis Nevada wormwood Annual herb  
Jaumea carnosa Marsh jaumea Perennial herb 9
Jensia rammii Ramm's madia Annual herb  
Jensia yosemitana Yosemite tarplant Annual herb  
Kyhosia bolanderi Bolander's madia Perennial herb  
Lactuca biennis Biennial wild lettuce Perennial herb  
Lactuca canadensis Canada wild lettuce Perennial herb  
Lactuca ludoviciana Louisiana wild lettuce Perennial herb  
Lactuca saligna Willow lettuce Annual herb  
Lactuca sativa Garden lettuce Annual herb  
Lactuca serriola Prickly lettuce Annual herb  
Lactuca tatarica Blue lettuce Perennial herb  
Lactuca tatarica ssp. pulchella Blue lettuce Perennial herb  
Lactuca tatarica var. pulchella Blue lettuce Perennial herb  
Lactuca virosa Poison wild lettuce Perennial herb  
Laennecia coulteri Coulter's horseweed Annual herb  
Lagophylla diabolensis Annual herb  
Lagophylla dichotoma Forked hareleaf Annual herb  
Lagophylla glandulosa Glandular hareleaf Annual herb  
Lagophylla minor Little hareleaf Annual herb  
Lagophylla ramosissima Common hareleaf Annual herb  
Lagophylla ramosissima ssp. congesta Clustered hareleaf Annual herb  
Lagophylla ramosissima ssp. ramosissima Common hareleaf Annual herb  
Lapsana communis Common nipplewort Annual herb  
Lasiospermum bipinnatum Woolly fruit Perennial herb  
Lasthenia burkei Burke's goldfields Annual herb  
Lasthenia californica Goldfields Annual herb 11
Lasthenia californica ssp. bakeri Baker's goldfields Annual herb  
Lasthenia californica ssp. californica California goldfields Annual herb 2
Lasthenia californica ssp. macrantha Perennial goldfields Annual herb 1
Lasthenia chrysantha Alkali goldfields Annual herb  
Lasthenia conjugens Contra costa goldfields Annual herb  
Lasthenia coronaria Royal goldfields Annual herb 2
Lasthenia debilis Greene's goldfields Annual herb  
Lasthenia ferrisiae Alkali goldfields Annual herb  
Lasthenia fremontii Vernal pool goldfields Annual, Perennial herb  
Lasthenia glaberrima Smooth goldfields Annual herb  
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 leptalea Salinas valley goldfields Annual herb  
Lasthenia macrantha Perennial goldfields Annual herb 1
Lasthenia macrantha ssp. bakeri Baker's goldfields Annual herb  
Lasthenia macrantha ssp. macrantha Perennial goldfields Annual herb 1
Lasthenia maritima Maritime goldfields Annual herb  
Lasthenia microglossa Small rayed goldfields Annual herb  
Lasthenia minor Coastal goldfields Annual herb  
Lasthenia platycarpha Alkali goldfields Annual herb  
Layia carnosa Beach layia Annual herb  
Layia chrysanthemoides Smooth tidy tips Annual herb 1
Layia discoidea Rayless layia Annual herb  
Layia fremontii Fremont's tidy tips Annual herb  
Layia gaillardioides Woodland layia Annual herb 4
Layia glandulosa White layia Annual herb 6
Layia heterotricha Pale yellow layia Annual herb  
Layia hieracioides Hawkweed layia Annual herb 1
Layia jonesii Jones's layia Annual herb  
Layia leucopappa Comanche point layia Annual herb  
Layia munzii Munz's tidy tips Annual herb  
Layia pentachaeta Sierra tidy tips Annual herb 1
Layia pentachaeta ssp. albida White sierra tidy tips Annual herb 1
Layia pentachaeta ssp. pentachaeta Sierra tidy tips Annual herb  
Layia platyglossa Tidy tips Annual herb 21
Layia septentrionalis Colusa layia Annual herb  
Lembertia congdonii San joaquin woollythreads Annual herb  
Leontodon autumnalis Fall dandelion Annual herb  
Leontodon autumnalis ssp. autumnalis Fall dandelion Annual herb  
Leontodon muelleri Mueller's hawkbit Annual herb  
Leontodon saxatilis Hawkbit Annual herb  
Leontodon saxatilis ssp. longirostris Hawkbit Annual herb  
Leontodon saxatilis ssp. saxatilis Annual herb  
Leontodon taraxacoides Hawkbit Perennial herb  
Leontodon taraxacoides ssp. longirostris Short beaked hawkbit Perennial herb  
Leontodon taraxacoides ssp. taraxacoides Lesser hawkbit Perennial herb  
Lepidospartum latisquamum Scale broom Shrub  
Lepidospartum squamatum Scalebroom Shrub 7
Leptosyne bigelovii Bigelow coreopsis Annual herb 3
Leptosyne californica California coreopsis Annual herb  
Leptosyne calliopsidea Leafy stemmed coreopsis Annual herb 3
Leptosyne douglasii Douglas' coreopsis Annual herb 1
Leptosyne gigantea Giant coreopsis Shrub 23
Leptosyne hamiltonii Mt. hamilton coreopsis Annual herb  
Leptosyne maritima Sea dahlia Perennial herb 6
Leptosyne stillmanii Stillman's coreopsis Annual herb 2
Lessingia arachnoidea Crystal springs lessingia Annual herb  
Lessingia filaginifolia Common california aster Perennial herb 23
Lessingia filaginifolia var. californica Beach aster Perennial herb 9
Lessingia filaginifolia var. filaginifolia Common california aster Perennial herb 8
Lessingia germanorum San francisco lessingia Annual herb  
Lessingia glandulifera Valley vinegar weed Annual herb  
Lessingia glandulifera var. glandulifera Sticky lessingia Annual herb  
Lessingia glandulifera var. pectinata Valley lessingia Annual herb  
Lessingia glandulifera var. peirsonii Peirson's lessingia Annual herb  
Lessingia glandulifera var. tomentosa Warner springs lessingia Annual herb  
Lessingia hololeuca Woolly headed 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  
Lessingia micradenia Little glandular lessingia Annual herb  
Lessingia micradenia var. glabrata Smooth lessingia Annual herb  
Lessingia micradenia var. micradenia Tamalpais lessingia Annual herb  
Lessingia nana Little lessingia Annual herb  
Lessingia nemaclada Thread stem lessingia Annual herb  
Lessingia occidentalis Western lessingia Annual herb  
Lessingia pectinata Annual herb  
Lessingia pectinata var. pectinata Valley lessingia Annual herb  
Lessingia pectinata var. tenuipes Sticky lessingia Annual herb  
Lessingia ramulosa Sonoma lessingia Annual herb  
Lessingia tenuis Spring lessingia Annual herb  
Lessingia virgata Wand lessingia Annual herb  
Lessingia virgata var. glomerata Wand lessingia Annual herb  
Lessingia virgata var. virgata Wand lessingia Annual herb  
Leucanthemum lacustre Portuguese daisy Perennial herb  
Leucanthemum maximum Shasta daisy Annual, Perennial herb 12
Leucanthemum vulgare ! Oxe eye daisy Perennial herb 6
Leucosyris arida Silver lake daisy Annual herb  
Leucosyris carnosa Shrubby alkali aster Shrub  
Logfia arizonica Arizona cottonrose Annual herb  
Logfia depressa Dwarf cottonrose Annual herb  
Logfia filaginoides California cottonrose Annual herb  
Logfia gallica Narrowleaf cottonrose Annual herb  
Luina hypoleuca Little leaf luina Perennial herb  
Luina serpentina Creeping silverback Perennial herb  
Machaeranthera arida Silver lake daisy Annual herb  
Machaeranthera asteroides Hoary aster Perennial herb  
Machaeranthera asteroides var. asteroides Hoary aster Perennial herb  
Machaeranthera asteroides var. lagunensis Laguna mtns. aster Perennial herb  
Machaeranthera canescens Hoary aster Perennial herb 1
Machaeranthera canescens var. canescens Hoary aster Perennial herb  
Machaeranthera canescens var. incana Hoary aster Perennial herb  
Machaeranthera canescens var. leucanthemifolia Hoary aster Perennial herb  
Machaeranthera canescens var. shastensis Shasta aster Perennial herb  
Machaeranthera canescens var. ziegleri Ziegler's aster Perennial herb  
Machaeranthera carnosa Shrubby alkali aster Shrub  
Machaeranthera gracilis Slender goldenweed Annual herb  
Machaeranthera juncea Rush like bristleweed Perennial herb  
Machaeranthera pinnatifida var. gooddingii Goodding's aster Perennial herb  
Machaeranthera tanacetifolia Tansy leaved aster Annual herb 9
Madia anomala Tarweed Annual herb  
Madia bolanderi Bolander's tarweed Perennial herb  
Madia citrigracilis Shasta tarweed Annual herb  
Madia citriodora Lemon scented tarweed Annual herb  
Madia doris-nilesiae Niles's madia Annual herb  
Madia elegans Common madia Annual herb 13
Madia elegans ssp. densifolia Leafy common madia Annual herb 11
Madia elegans ssp. elegans Common madia Annual herb 13
Madia elegans ssp. vernalis Spring common madia Annual herb 12
Madia elegans ssp. wheeleri Wheeler's common madia Annual herb 11
Madia exigua Small tarweed Annual herb  
Madia glomerata Mountain tarweed Annual herb  
Madia gracilis Gumweed Annual herb 1
Madia hallii Hall's madia Annual herb  
Madia madioides Forest madia Perennial herb 2
Madia minima Little tarweed Annual herb  
Madia nutans Nodding madia Annual herb  
Madia radiata Showy madia Annual herb  
Madia rammii Ramm's madia Annual herb  
Madia sativa Coastal tarweed Annual herb  
Madia stebbinsii Stebbins's madia Annual herb  
Madia subspicata Slender tarweed Annual herb  
Madia yosemitana Yosemite madia Annual herb  
Malacothrix californica Desert dandelion Annual herb  
Malacothrix clevelandii Cleveland's malacothrix Annual herb  
Malacothrix coulteri Snake's head Annual herb 1
Malacothrix floccifera Woolly malacothrix Annual herb 1
Malacothrix foliosa Leafy malacothrix Annual herb  
Malacothrix foliosa ssp. crispifolia Petite desertdandelion Annual herb  
Malacothrix foliosa ssp. foliosa Leafy desertdandelion Annual herb  
Malacothrix foliosa ssp. philbrickii Philbrick's desertdandelion Annual herb  
Malacothrix foliosa ssp. polycephala Manyhead desertdandelion Annual herb  
Malacothrix glabrata Desert dandelion Annual herb 4
Malacothrix incana Dunedelion Perennial herb 2
Malacothrix indecora Santa cruz island malacothrix Annual herb  
Malacothrix junakii Junak's desertdandelion Annual herb  
Malacothrix phaeocarpa Central coast malacothrix Annual herb  
Malacothrix polycephala Annual herb  
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
Malacothrix similis Mexican malacothrix Annual herb  
Malacothrix sonchoides Sow thistle malacothrix Annual herb 1
Malacothrix squalida Island malacothrix Annual herb  
Malacothrix stebbinsii Stebbins' dandelion Annual herb  
Malacothrix torreyi Torrey's malacothrix Annual herb  
Malperia tenuis Brown turbans Annual herb  
Matricaria chamomilla German chamomile Annual herb  
Matricaria discoidea Pineapple weed Annual herb 3
Matricaria globifera Clustered chamomille Annual herb  
Matricaria occidentalis Valley mayweed Annual herb  
Mauranthemum paludosum  
Melampodium perfoliatum Perfoliate blackfoot Annual herb  
Micropus amphibolus Mt. diablo cottonweed Annual herb  
Micropus californicus Q tips Annual herb 1
Micropus californicus var. californicus Slender cottonweed Annual herb  
Micropus californicus var. subvestitus Hairy slender cottonweed Annual herb  
Microseris acuminata Sierra foothills microseris Annual herb 1
Microseris bigelovii Coast microseris Annual herb  
Microseris borealis Northern microseris Perennial herb  
Microseris campestris San joaquin microseris Annual herb  
Microseris douglasii Douglas' microseris Annual herb 1
Microseris douglasii ssp. douglasii Douglas' microseris Annual herb 1
Microseris douglasii ssp. platycarpha Small flowered microseris Annual herb  
Microseris douglasii ssp. tenella Short scaled microseris Annual herb  
Microseris elegans Elegant silverpuffs Annual herb  
Microseris laciniata Cut leaved scorzonella Perennial herb  
Microseris laciniata ssp. detlingii Detling's silverpuffs Perennial herb  
Microseris laciniata ssp. laciniata Cut leaved scorzonella Perennial herb  
Microseris laciniata ssp. leptosepala Cut leaved scorzonella Perennial herb  
Microseris laciniata ssp. siskiyouensis Siskiyou microseris Perennial herb  
Microseris laciniata var. siskiyouensis Cutleaf silverpuffs Perennial herb  
Microseris nutans Nodding microceris Perennial herb  
Microseris paludosa Marsh scorzonella Perennial herb  
Microseris sylvatica Sylvan scorzonella Perennial herb  
Monolopia congdonii San joaquin woollythreads Annual herb  
Monolopia gracilens Woodland monolopia Annual herb  
Monolopia lanceolata Common monolopia Annual herb 3
Monolopia major Cupped monolopia Annual herb  
Monolopia stricta Crum's monolopia Annual herb 1
Monoptilon bellidiforme Desert star Annual herb  
Monoptilon bellioides Mojave desert star Annual herb  
Munzothamnus blairii Blair's wirelettuce Shrub 2
Nestotus stenophyllus Narrowleaf mock goldenweed Perennial herb  
Nicolletia occidentalis Western nicolletia Perennial herb  
Nothocalais alpestris Alpine prairie dandelion Perennial herb  
Nothocalais troximoides False agoseris Perennial herb  
Oncosiphon piluliferum ! Stinknet Annual herb  
Onopordum acanthium ! Scotch cottonthistle Perennial herb  
Onopordum acanthium ssp. acanthium Scottish thistle Perennial herb  
Onopordum illyricum ! Illyrian thistle Biennial herb  
Onopordum tauricum Taurian thistle Perennial herb  
Oreostemma alpigenum Tundra aster Perennial herb 3
Oreostemma alpigenum var. andersonii Tundra aster Perennial herb 1
Oreostemma elatum Plumas alpine aster Perennial herb  
Oreostemma peirsonii Peirson's aster Perennial herb  
Orochaenactis thysanocarpha Mountain pincushion Annual herb  
Osmadenia tenella Osmadenia Annual herb  
Osteospermum ecklonis African daisy Perennial herb 1
Osteospermum fruticosum Shrubby daisybush Perennial herb 2
Oxytenia acerosa Copperweed Perennial herb  
Packera bernardina San bernardino ragwort Perennial herb  
Packera bolanderi Bolander's ragwort Perennial herb  
Packera bolanderi var. bolanderi Bolander's ragwort Perennial herb  
Packera breweri Brewer's ragwort Perennial herb  
Packera cana Woolly groundsel Perennial herb  
Packera clevelandii Cleveland's ragwort Perennial herb  
Packera eurycephala Widehead groundsel Perennial herb  
Packera eurycephala var. eurycephala Widehead groundsel Perennial herb  
Packera eurycephala var. lewisrosei Lewis' groundsel Perennial herb  
Packera ganderi Gander's ragwort Perennial herb  
Packera greenei Flame ragwort Perennial herb  
Packera hesperia Western ragwort Perennial herb  
Packera indecora Elegant groundsel Perennial herb  
Packera ionophylla Tehachapi ragwort Perennial herb  
Packera layneae Layne's ragwort Perennial herb  
Packera macounii Siskiyou mountain ragwort Perennial herb  
Packera multilobata Lobeleaf groundsel Perennial herb  
Packera pauciflora Alpine groundsel Perennial herb  
Packera pseudaurea Falsegold groundsel Perennial herb  
Packera pseudaurea var. pseudaurea Falsegold groundsel Perennial herb  
Packera streptanthifolia Rocky mountain groundsel Perennial herb  
Packera streptanthifolia var. streptanthifolia Rocky mountain groundsel Perennial herb  
Packera subnuda Buek's groundsel Perennial herb  
Packera subnuda var. subnuda Cleftleaf groundsel Perennial herb  
Packera werneriifolia Hoary groundsel Perennial herb  
Palafoxia arida Spanish needle Annual herb  
Palafoxia arida var. arida Desert needle Annual herb  
Palafoxia arida var. gigantea Giant spanish needle Annual, Perennial herb  
Pallenis maritima Gold coin  
Parthenium argentatum Guayule Perennial herb  
Parthenium hysterophorus ! Santa maria feverfew Perennial herb  
Parthenium incanum Mariola Perennial herb  
Pectis coulteri Annual herb  
Pectis filipes Fivebract chinchweed Annual herb  
Pectis papposa Manybristle chinchweed Annual herb  
Pectis papposa var. papposa Chinch weed Annual herb  
Pentachaeta alsinoides Tiny pygmy daisy Annual herb  
Pentachaeta aurea Golden rayed pentachaeta Annual herb  
Pentachaeta aurea ssp. allenii Allen's daisy Annual herb  
Pentachaeta aurea ssp. aurea Golden chaetopappa Perennial herb  
Pentachaeta bellidiflora White rayed pentachaeta Annual herb  
Pentachaeta exilis Slender pentachaeta Annual herb  
Pentachaeta exilis ssp. aeolica Slender pentachaeta Annual herb  
Pentachaeta exilis ssp. exilis Slender pentachaeta Annual herb  
Pentachaeta fragilis Fragile pygmy daisy Annual herb  
Pentachaeta lyonii Lyon's pentachaeta Annual herb  
Pericallis cruenta Annual, Perennial herb  
Pericallis hybrida Common ragwort Annual, Perennial herb  
Pericome caudata Tailed pericome Perennial herb  
Perityle emoryi Emory's rock daisy Annual herb 3
Perityle intricata Desert rock daisy Perennial herb  
Perityle inyoensis Inyo rock daisy Perennial herb, Shrub  
Perityle megalocephala Large headed rock daisy Shrub  
Perityle megalocephala var. megalocephala Large headed rock daisy Shrub  
Perityle megalocephala var. oligophylla Straight leaf rock daisy Shrub  
Perityle microglossa Shortray rockdaisy Perennial herb  
Perityle villosa Hanaupah rock daisy Perennial herb  
Petasites albus White butterbur Perennial herb  
Petasites fragrans Winter heliotrope Perennial herb  
Petasites frigidus Arctic sweet coltsfoot Perennial herb 2
Petasites frigidus var. palmatus Western coltsfoot Perennial herb 9
Petradoria pumila Rock goldenrod Perennial herb  
Petradoria pumila ssp. pumila Rock goldenrod Perennial herb  
Petradoria pumila var. pumila Rock-goldenrod Perennial herb  
Peucephyllum schottii Desert pine Shrub  
Phalacroseris bolanderi Bolander's mock dandelion Perennial herb  
Phalacroseris bolanderi var. bolanderi Bolander's mock dandelion Perennial herb  
Phalacroseris bolanderi var. coronata Bolander's mock dandelion Perennial herb  
Picradeniopsis multiflora Many flowered bahia Annual herb  
Picris echioides Bristly ox tongue Annual, Perennial herb  
Plecostachys serpyllifolia ! Petite-licorice  
Pleiacanthus spinosus Thorn skeletonweed Perennial herb  
Pleurocoronis pluriseta Arrow leaf Shrub  
Pluchea camphorata Camphor pluchea Annual, Perennial herb  
Pluchea odorata Salt marsh fleabane Annual, Perennial herb 8
Pluchea odorata var. odorata Salt marsh fleabane Annual, Perennial herb 3
Pluchea sericea Arrow weed Shrub 7
Porophyllum gracile Odora Perennial herb  
Porophyllum ruderale Yerba porosa Annual herb  
Porophyllum ruderale var. macrocephalum Yerba porosa Annual herb  
Porophyllum scoparium Trans-pecos poreleaf Annual herb  
Prenanthella exigua Thorny skeleton plant Annual herb  
Prenanthes altissima Tall rattlesnakeroot Perennial herb  
Prionopsis ciliata Spanish gold Annual, Perennial herb  
Psathyrotes annua Annual psathyrotes Annual herb  
Psathyrotes ramosissima Turtleback Annual, Perennial herb  
Pseudobahia bahiifolia Hartweg's golden sunburst Annual herb  
Pseudobahia heermannii Heermann's golden sunburst Annual herb  
Pseudobahia peirsonii San joaquin adobe sunburst Annual herb  
Pseudognaphalium beneolens Cudweed Perennial herb 1
Pseudognaphalium biolettii Two-color rabbit-tobacco Perennial herb 5
Pseudognaphalium californicum Ladies' tobacco Annual, Perennial herb 11
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 luteoalbum Jersey cudweed Annual herb  
Pseudognaphalium macounii Macoun's everlasting Annual, Perennial herb  
Pseudognaphalium microcephalum Wright's cudweed Perennial herb 3
Pseudognaphalium ramosissimum Pink cudweed Biennial herb 1
Pseudognaphalium roseum Rosy cudweed Annual herb  
Pseudognaphalium stramineum Cottonbatting plant Perennial herb 3
Pseudognaphalium thermale Small headed cudweed Perennial herb  
Psilocarphus brevissimus Woolly marbles Annual herb  
Psilocarphus brevissimus var. brevissimus Woolly heads Annual herb  
Psilocarphus brevissimus var. multiflorus Delta woolly marbles Annual herb  
Psilocarphus chilensis Round woolly marbles Annual herb  
Psilocarphus elatior Tall woolly marbles Annual herb  
Psilocarphus oregonus Woolly marbles Annual herb  
Psilocarphus tenellus Slender woolly heads Annual herb  
Psilocarphus tenellus var. globiferus Round woolly marbles Annual herb  
Psilocarphus tenellus var. tenellus Slender woolly heads Annual herb  
Psilostrophe cooperi Paper flower Shrub 5
Pulicaria paludosa Spanish false fleabane Annual, Perennial herb  
Pyrrocoma apargioides Alpine pyrrocoma Perennial herb 1
Pyrrocoma carthamoides Largeflower goldenweed Perennial herb  
Pyrrocoma carthamoides var. cusickii Cusick's columbia pyrrocoma Perennial herb  
Pyrrocoma hirta Sticky pyrrocoma Perennial herb  
Pyrrocoma hirta var. hirta Sticky pyrrocoma Perennial herb  
Pyrrocoma hirta var. lanulosa Woolly pyrrocoma Perennial herb  
Pyrrocoma lanceolata Intermountain pyrrocoma Perennial herb  
Pyrrocoma lanceolata var. lanceolata Intermountain pyrrocoma Perennial herb  
Pyrrocoma lanceolata var. subviscosa Sticky intermountain pyrrocoma Perennial herb  
Pyrrocoma lucida Sticky pyrrocoma Perennial herb  
Pyrrocoma racemosa Racemose pyrrocoma Perennial herb  
Pyrrocoma racemosa var. congesta Del norte pyrrocoma Perennial herb  
Pyrrocoma racemosa var. paniculata Panicled pyrrocoma Perennial herb  
Pyrrocoma racemosa var. pinetorum Pine pyrrocoma Perennial herb  
Pyrrocoma racemosa var. racemosa Racemose pyrrocoma Perennial herb  
Pyrrocoma racemosa var. sessiliflora Racemose pyrrocoma Perennial herb  
Pyrrocoma uniflora Single headed pyrrocoma Perennial herb  
Pyrrocoma uniflora var. gossypina Bear valley pyrrocoma Perennial herb  
Pyrrocoma uniflora var. uniflora Single headed pyrrocoma Perennial herb  
Rafinesquia californica California chicory Annual herb  
Rafinesquia neomexicana Desert chicory Annual herb 1
Raillardella argentea Silky raillardella Perennial herb  
Raillardella pringlei Showy raillardella Perennial herb (rhizomatous)  
Raillardella scaposa Green leaved raillardella Perennial herb  
Raillardiopsis muirii Muir's raillardella Perennial herb (rhizomatous)  
Raillardiopsis scabrida Scabrid raillardella Perennial herb  
Ratibida columnifera Upright prairie coneflower Perennial herb 14
Rhagadiolus stellatus Endive daisy Annual herb  
Rigiopappus leptocladus Wire weed Annual herb  
Roldana petasitis Velvet groundsel Shrub 1
Rudbeckia californica California cone flower Perennial herb 5
Rudbeckia californica var. californica California cone flower Perennial herb 5
Rudbeckia californica var. glauca Serpentine cone flower Perennial herb  
Rudbeckia californica var. intermedia California cone flower Perennial herb  
Rudbeckia glaucescens Waxy coneflower Perennial herb  
Rudbeckia hirta Blackeyed susan Perennial herb 21
Rudbeckia hirta var. pulcherrima Black eyed susan Perennial herb  
Rudbeckia klamathensis Klamath coneflower Perennial herb  
Rudbeckia occidentalis Western coneflower Perennial herb 10
Rudbeckia occidentalis var. occidentalis Western cone flower Perennial herb 10
Rudbeckia triloba var. pinnatiloba Browneyed susan Perennial herb  
Santolina chamaecyparissus Lavender cotton Shrub 18
Sanvitalia abertii Abert's sanvitalia Annual herb  
Sanvitalia procumbens Mexican creeping zinnia Annual herb 1
Saussurea americana American saw wort Perennial herb 1
Schkuhria multiflora Manyflower false threadleaf Annual herb  
Schkuhria multiflora var. multiflora Many flowered bahia Annual herb  
Scolymus hispanicus ! Golden thistle Perennial herb  
Scorzonera hispanica Viper's grass Perennial herb 1
Senecio ammophilus California coast butterweed Annual herb  
Senecio aphanactis California groundsel Annual herb  
Senecio aronicoides Butterweed Perennial herb  
Senecio astephanus San gabriel ragwort Perennial herb  
Senecio bernardinus San bernardino ragwort Perennial herb  
Senecio blochmaniae Dune ragwort Shrub 2
Senecio bolanderi var. bolanderi Bolander's ragwort Perennial herb  
Senecio breweri Brewer's groundsel Perennial herb  
Senecio californicus California butterweed Annual herb  
Senecio canus Woolly ragwort Perennial herb  
Senecio clarkianus Clark's ragwort Perennial herb  
Senecio clevelandii Cleveland's ragwort Perennial herb  
Senecio clevelandii var. clevelandii Cleveland's ragwort Perennial herb  
Senecio clevelandii var. heterophyllus Red hills ragwort Perennial herb  
Senecio cymbalarioides Cleft leaved groundsel Perennial herb  
Senecio elegans Purple ragwort Annual herb 1
Senecio eremophilus Desert ragwort Shrub  
Senecio eurycephalus Cut leaved butterweed Perennial herb  
Senecio eurycephalus var. eurycephalus Broadhead ragwort Perennial herb  
Senecio eurycephalus var. lewisrosei Cut leaved ragwort Perennial herb  
Senecio flaccidus Shrubby ragwort Shrub 7
Senecio flaccidus var. douglasii Bush groundsel Shrub 3
Senecio flaccidus var. flaccidus Threadleaf ragwort Shrub  
Senecio flaccidus var. monoensis Mono groundsel Shrub  
Senecio fremontii Fremont's groundsel Perennial herb  
Senecio fremontii var. fremontii Fremont's groundsel Perennial herb  
Senecio fremontii var. occidentalis Western fremont's groundsel Perennial herb  
Senecio ganderi Gander's ragwort Perennial herb  
Senecio glomeratus ! Cutleaf burnweed Annual, Perennial herb  
Senecio greenei Serpentine ragwort Perennial herb  
Senecio hybridus Florist's cineraria Perennial herb  
Senecio hydrophiloides Sweet marsh ragwort Perennial herb  
Senecio hydrophilus Alkali marsh ragwort Perennial herb  
Senecio indecorus Rayless mountain butterweed Perennial herb  
Senecio integerrimus Mountain butterweed Perennial herb  
Senecio integerrimus var. exaltatus Columbia mountain butterweed Perennial herb  
Senecio integerrimus var. major Lambstongue groundsel Perennial herb  
Senecio integerrimus var. ochroleucus White flowered mountain butterweed Perennial herb  
Senecio ionophyllus Tehachapi ragwort Perennial herb  
Senecio jacobaea ! Tansy ragwort Perennial herb  
Senecio layneae Layne's ragwort Perennial herb  
Senecio linearifolius ! Australian fireweed Annual, Perennial herb  
Senecio linearifolius var. linearifolius Linear-leaved australian fireweed Annual, Perennial herb  
Senecio lugens Small blacktip ragwort Shrub  
Senecio lyonii Lyon's ragwort Shrub  
Senecio macounii Siskiyou mtns. ragwort Perennial herb  
Senecio mikanioides German ivy Perennial herb  
Senecio minimus Coastal burnweed Annual, Perennial herb  
Senecio mohavensis Mohave groundsel Annual herb  
Senecio multilobatus Basin butterweed Perennial herb  
Senecio parryi Mountain ragwort Shrub  
Senecio pattersonensis Mono ragwort Perennial herb (rhizomatous)  
Senecio pauciflorus Rayless alpine ragwort Perennial herb  
Senecio pseudaureus var. pseudaureus Streambank butterweed Perennial herb  
Senecio quadridentatus Cotton burnweed Annual, Perennial herb  
Senecio scorzonella Sierra ragwort Perennial herb  
Senecio serra Tall ragwort Perennial herb  
Senecio serra var. serra Tall ragwort Perennial herb  
Senecio spartioides Broom groundsel Perennial herb  
Senecio sphaerocephalus Ballhead ragwort Shrub  
Senecio squalidus Oxford ragwort Perennial herb  
Senecio streptanthifolius Cleft leaved groundsel Perennial herb  
Senecio sylvaticus Woodland groundsel Annual herb  
Senecio triangularis Groundsel Perennial herb  
Senecio vulgaris Common groundsel Annual herb  
Senecio werneriifolius Alpine rock butterweed Perennial herb  
Sericocarpus oregonensis Oregon whitetop aster Perennial herb  
Sericocarpus oregonensis ssp. californicus Oregon whitetop aster Perennial herb  
Sericocarpus oregonensis ssp. oregonensis Oregon whitetop aster Perennial herb  
Sericocarpus oregonensis var. californicus Oregon whitetop aster Perennial herb  
Sericocarpus oregonensis var. oregonensis Oregon whitetop aster Perennial herb  
Sericocarpus rigidus Columbian whitetop aster Perennial herb  
Silybum marianum ! Milk thistle Annual, Perennial herb 1
Solidago altissima Canada goldenrod Perennial herb  
Solidago altissima ssp. altissima Late goldenrod Perennial herb  
Solidago altissima var. altissima Late goldenrod Perennial herb  
Solidago californica Oreja de liebre Perennial herb 25
Solidago canadensis Canada goldenrod Perennial herb 16
Solidago canadensis ssp. elongata Canada goldenrod Perennial herb 3
Solidago canadensis var. gilvocanescens Shorthair goldenrod Perennial herb  
Solidago canadensis var. salebrosa Rough canada goldenrod Perennial herb 1
Solidago confinis Southern goldenrod Perennial herb 3
Solidago elongata West coast canada goldenrod Perennial herb 3
Solidago gigantea Smooth goldenrod Perennial herb (rhizomatous)  
Solidago guiradonis Guirado's goldenrod Perennial herb (rhizomatous)  
Solidago lepida Western goldenrod Perennial herb (rhizomatous)  
Solidago lepida var. salebrosa Western goldenrod Perennial herb (rhizomatous) 1
Solidago missouriensis var. missouriensis Missouri goldenrod Perennial herb  
Solidago multiradiata Northern goldenrod Perennial herb 1
Solidago sparsiflora Great basin goldenrod Perennial herb 5
Solidago spathulata Dune goldenrod Perennial herb 5
Solidago spathulata ssp. spathulata Coast goldenrod Perennial herb 5
Solidago spectabilis Showy goldenrod Perennial herb 3
Solidago velutina Threenerve goldenrod Perennial herb 7
Solidago velutina ssp. californica Oreja de liebre Perennial herb 25
Solidago velutina ssp. sparsiflora Great basin goldenrod Perennial herb 2
Soliva sessilis South american soliva Annual herb  
Sonchus arvensis Perennial sow thistle Perennial herb  
Sonchus arvensis ssp. arvensis Field sowthistle Perennial herb  
Sonchus arvensis ssp. uliginosus Moist sowthistle Perennial herb  
Sonchus asper Spiny sowthistle Annual herb  
Sonchus asper ssp. asper Sow thistle Annual herb  
Sonchus oleraceus Sow thistle Annual herb  
Sonchus tenerrimus Slender sow thistle Annual herb  
Sphaeromeria cana Tansy Perennial herb  
Sphaeromeria potentilloides Cinquefoil tansy Perennial herb  
Sphaeromeria potentilloides var. nitrophila Cinquefoil tansy Perennial herb  
Sphaeromeria potentilloides var. potentilloides Cinquefoil tansy Perennial herb  
Stebbinsoseris decipiens Santa Cruz microseris Annual herb  
Stebbinsoseris heterocarpa Grassland stebbinsoseris Annual herb  
Stenotus acaulis Stemless mock goldenweed Perennial herb  
Stenotus lanuginosus Woolly stenotus Perennial herb  
Stenotus lanuginosus var. lanuginosus Woolly stenotus Perennial herb  
Stenotus stenophyllus Narrowleaf goldenweed Perennial herb  
Stephanomeria blairii Blair's stephanomeria Shrub 2
Stephanomeria cichoriacea Fort tejon milk aster Perennial herb 1
Stephanomeria diegensis San diego wreathplant Annual, Perennial herb  
Stephanomeria elata Santa barbara stephanomeria Annual herb  
Stephanomeria exigua Small wirelettuce Annual herb  
Stephanomeria exigua ssp. carotifera White plume stephanomeria Perennial 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 exigua ssp. macrocarpa Large fruited stephanomeria Annual herb  
Stephanomeria lactucina Large flowered stephanomeria Perennial herb  
Stephanomeria paniculata Stiff branched stephanomeria Annual herb  
Stephanomeria parryi Parry rock pink Perennial herb  
Stephanomeria pauciflora Wire lettuce Perennial herb 1
Stephanomeria pauciflora var. parishii Parish's wire lettuce Perennial herb 1
Stephanomeria pauciflora var. pauciflora Wire lettuce Perennial herb 1
Stephanomeria runcinata Desert wirelettuce Annual herb  
Stephanomeria spinosa Thorny skeleton plant Perennial herb  
Stephanomeria tenuifolia Narrow leaved wire lettuce Perennial 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  
Stokesia laevis Stokes' aster Perennial herb 2
Stylocline citroleum Oil nest straw Annual herb  
Stylocline gnaphaloides Everlasting stylocline Annual herb  
Stylocline intertexta Tangled nest straw Annual herb  
Stylocline masonii Mason neststraw Annual herb  
Stylocline micropoides Desert nest straw Annual herb  
Stylocline psilocarphoides Peck's stylocline Annual herb  
Stylocline sonorensis Mesquite neststraw Annual herb  
Symphyotrichum ascendens Western aster Perennial herb 1
Symphyotrichum bracteolatum Eaton's aster Perennial herb 2
Symphyotrichum campestre Western meadow aster Perennial herb  
Symphyotrichum campestre var. bloomeri Bloomer's aster Perennial herb  
Symphyotrichum campestre var. campestre Western meadow aster Perennial herb  
Symphyotrichum chilense Pacific aster Perennial herb 34
Symphyotrichum chilense var. chilense Pacific aster Perennial herb 11
Symphyotrichum chilense var. invenustum Pacific aster Perennial herb 9
Symphyotrichum chilense var. medium Pacific aster Perennial herb 9
Symphyotrichum defoliatum San bernardino aster Perennial herb (rhizomatous)  
Symphyotrichum eatonii Eaton's aster Perennial herb 2
Symphyotrichum foliaceum Alpine leafybract aster Perennial herb 2
Symphyotrichum foliaceum var. apricum Alpine leafybract aster Perennial herb 1
Symphyotrichum foliaceum var. canbyi Canby's aster Perennial herb  
Symphyotrichum foliaceum var. parryi Parry's aster Perennial herb 1
Symphyotrichum frondosum Short rayed alkali aster Annual herb  
Symphyotrichum greatae Greata's aster Perennial herb (rhizomatous)  
Symphyotrichum hendersonii Henderson's aster Annual herb  
Symphyotrichum laeve Smooth blue aster Perennial herb  
Symphyotrichum laeve var. geyeri Geyer's aster Perennial herb  
Symphyotrichum lanceolatum White panicle aster Perennial herb  
Symphyotrichum lanceolatum var. hesperium Western lance leaf aster Perennial herb  
Symphyotrichum lentum Suisun marsh aster Perennial herb (rhizomatous) 2
Symphyotrichum spathulatum Western mountain aster Perennial herb 1
Symphyotrichum spathulatum var. intermedium Larger western mountain aster Perennial herb  
Symphyotrichum spathulatum var. spathulatum Western mountain aster Perennial herb  
Symphyotrichum spathulatum var. yosemitanum Western bog aster Perennial herb  
Symphyotrichum subspicatum Douglas aster Annual herb 9
Symphyotrichum subulatum Eastern annual saltmarsh aster Annual herb  
Symphyotrichum subulatum var. elongatum Eastern annual saltmarsh aster Perennial herb  
Symphyotrichum subulatum var. parviflorum Eastern annual saltmarsh aster Perennial herb  
Symphyotrichum subulatum var. squamatum Eastern annual saltmarsh aster Perennial herb  
Syntrichopappus fremontii Fremont's syntrichopappus Annual herb  
Syntrichopappus lemmonii Lemmon's syntrichopappus Annual herb  
Tagetes erecta French or african marigold Annual herb 7
Tagetes minuta Little marigold Annual herb  
Tanacetum balsamita Costmary Perennial herb 2
Tanacetum bipinnatum Dune tansy Perennial herb 9
Tanacetum camphoratum Dune tansy Perennial herb 9
Tanacetum parthenium Feverfew Perennial herb 8
Tanacetum vulgare ! Tansy Perennial herb 5
Taraxacum californicum California dandelion Perennial herb  
Taraxacum ceratophorum Horned dandelion Annual herb  
Taraxacum erythrospermum Red-seeded dandelion Perennial herb  
Taraxacum lyratum Harp dandelion Perennial herb  
Taraxacum officinale Red seeded dandelion Perennial herb 1
Taraxacum officinale ssp. officinale Common dandelion Perennial herb 1
Tetradymia argyraea Striped horsebrush Shrub  
Tetradymia axillaris Catclaw horsebrush Shrub 2
Tetradymia axillaris var. axillaris Catclaw horsebrush Shrub  
Tetradymia axillaris var. longispina Catclaw horsebrush Shrub  
Tetradymia canescens Gray horsebrush Shrub 1
Tetradymia comosa Cotton thorn Shrub 2
Tetradymia glabrata Little leaf horsebrush Shrub  
Tetradymia spinosa Spiny horsebrush Shrub (stem succulent) 3
Tetradymia stenolepis Narrow scaled felt thorn Shrub  
Tetradymia tetrameres Four parted horsebrush Shrub (stem succulent)  
Tetraneuris acaulis Stemless four nerve daisy Perennial herb 9
Tetraneuris acaulis var. arizonica Arizona four nerve daisy Perennial herb 1
Thelesperma filifolium Stiff greenthread Perennial herb 1
Thelesperma megapotamicum Hopi tea Perennial herb 1
Thelesperma simplicifolium Slender greenthread Perennial herb  
Thymophylla pentachaeta Fiveneedle pricklyleaf Perennial herb 3
Thymophylla pentachaeta var. belenidium Five needled thymophylla Perennial herb 1
Thymophylla tenuiloba var. tenuiloba Bristleleaf pricklyleaf Annual herb  
Tolpis barbata European milkwort Annual, Perennial herb  
Tonestus eximius Tahoe tonestus Perennial herb (rhizomatous)  
Tonestus lyallii Lyall's tonestus Perennial herb (rhizomatous)  
Tonestus peirsonii Peirson's haplopappus Perennial herb  
Townsendia condensata Hairy townsendia Perennial herb  
Townsendia leptotes Common townsendia Perennial herb  
Townsendia parryi Parry's townsendia Perennial herb  
Townsendia scapigera Tufted townsendia Perennial herb  
Tracyina rostrata Beaked tracyina Annual herb  
Tragopogon dubius Goat's beard Perennial herb  
Tragopogon hybridus Pasture goatsbeard Annual herb  
Tragopogon porrifolius Salsify Perennial herb  
Tragopogon pratensis Meadow salsify Perennial herb  
Trichocoronis wrightii Limestone bugheal Annual herb  
Trichocoronis wrightii var. wrightii Wright's trichocoronis Annual herb  
Trichoptilium incisum Yellow head Annual herb  
Trimorpha acris var. debilis Northern daisy Perennial herb  
Trimorpha lonchophylla Spearleaved northern daisy Perennial herb  
Tripleurospermum inodorum False mayweed Annual herb  
Tripleurospermum maritimum False mayweed Annual herb  
Trixis californica American threefold Shrub 2
Trixis californica var. californica California trixis Shrub 2
Uropappus lindleyi Silver puffs Annual herb 1
Urospermum picroides Bristly tail seed Annual, Perennial herb  
Venegasia carpesioides Canyon sunflower Perennial herb 9
Venidium fastuosum Monarch of the veld, cape daisy Annual herb 1
Verbesina dissita Crownbeard Perennial herb  
Verbesina encelioides Golden crownbeard Annual herb 1
Verbesina encelioides ssp. encelioides Golden crownbeard Annual herb  
Verbesina encelioides ssp. exauriculata Golden viguiera Annual herb  
Viguiera deltoidea Shrub 4
Viguiera laciniata San Diego County viguiera Shrub 8
Viguiera parishii Parish viguiera Shrub 5
Viguiera purisimae La purisima viguiera Shrub  
Viguiera reticulata Net veined viguiera Shrub  
Volutaria canariensis Canary island knapweed Annual herb  
Volutaria muricata Morocco knapweed Annual herb  
Volutaria tubuliflora ! Egyptian knapweed Annual herb  
Whitneya dealbata Whitneya Perennial herb  
Wyethia angustifolia Narrow leaved mule ears Perennial herb 10
Wyethia bolanderi Bolander's wyethia Perennial herb  
Wyethia elata Hall's wyethia Perennial herb  
Wyethia glabra Smooth mule ears Perennial herb  
Wyethia helenioides Whitehead wyethia Perennial herb 2
Wyethia invenusta Coville's wyethia Perennial herb  
Wyethia longicaulis Humboldt county wyethia Perennial herb  
Wyethia mollis Woolly mule's ears Perennial herb 5
Wyethia ovata Southern wyethia Perennial herb  
Wyethia reticulata El dorado county mule ears Perennial herb  
Xanthisma gracile Annual bristleweed Annual herb  
Xanthisma junceum Rush like bristleweed Perennial herb  
Xanthisma spinulosum Perennial herb  
Xanthisma spinulosum var. gooddingii Goodding's aster Perennial herb  
Xanthium spinosum Spiny cocklebur Annual herb  
Xanthium strumarium Cocklebur Annual herb  
Xylorhiza cognata Mecca aster Perennial herb  
Xylorhiza orcuttii Orcutt's woody aster Perennial herb 1
Xylorhiza tortifolia Mojave woodyaster Perennial herb 4
Xylorhiza tortifolia var. tortifolia Desert aster Perennial herb  
Youngia japonica Oriental false hawksbeard Annual herb  
Youngia japonica var. japonica Annual herb  
Zinnia elegans Elegant zinnia Annual herb 5