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Cabbage, Mediterranean (Brassica
fruticulosa)
Cactus,
Beavertail (Opuntia
basilaris var. basilaris)
California barrel cactus (Ferocactus
cylindraceus var. cylindraceus)
Coast barrel (Ferocactus
viridescens)
Cottontop (Echinocactus
polycephalus var. polycephalus)
Engelmann's hedgehog (Echinocereus
englemannii)
Fishhook (Mammillaria
dioica)
Fishhook (Mammillaria tetrancistra)
LeConte's barrel (Ferocactus
cylindraceus var. lecontei)
Mission (Opuntia
ficus-indica)*
Mojave mound (Echinocereus
mohavensis)
Old man (Opuntia
erinacea)
Calabazilla (Cucurbita foetidissima)
Calabazilla fruit (Cucurbita
foetidissima)
Calicoflower, Toothed (Downingia
cuspidata)
California adder's-tongue (Ophioglossum
californicum)
California adolphia (Adolphia californica)
California amaranth (Amaranthus californicus)
California aralia (Aralia californica)
California ash (Fraxinus dipetala)
California aster (Corethrogyne
filaginifolia)
California barberry (Berberis pinnata
ssp. pinnata)
California barrel cactus (Ferocactus
cylindraceus)
California bastard toadflax (Comandra umbellata ssp. californica)
California bay (Umbellularia
californica)
California beardtongue (Penstemon californicus)
California black oak (Quercus kelloggii)
California black walnut
( female flowers) (Juglans
californica var. californica)
(fruit) (Juglans
californica var. californica)
(male flowers) (Juglans
californica var. californica)
California blackberry (Rubus
ursinus)
California blackberry fruit (Rubus
ursinus)
California boxthorn (Lycium californicum)
California brickellbush (Brickellia
californica)
California brome (Bromus carinatus var.
carinatus)
California broom-rape (Orobanche
californica ssp. feudgei)
California buckeye (Aesculus californica)
California buckeye seed (Aesculus
californica)
California buckwheat (Eriogonum
fasciculatum var. fasciculatum)
California bulrush (Schoenoplectus californicus)
California bur-clover (Medicago polymorpha)*
California buttercup (Ranunculus
californicus var. californicus)
California chicory (Rafinesquia
californica)
California cloak fern (Notholaena californica)
California cliff brake (Pellaea
mucronata var. californica)
California copperleaf (Acalypha
californica)
California croton (male flowers) (Croton
californicus)
California croton (female flowers) (Croton
californicus)
California dandelion (Taraxacum
californicum)
California dodder (Cuscuta
californica var. californica)
California dodder, Short-flowered (Cuscuta
californica var. breviflora)
California draba (Draba cuneifolia)
California ephedra (Ephedra californica)
California evening primrose (Oenothera
californica ssp. californica)
California everlasting (Pseudognaphalium
californicum)
California false-indigo (Amorpha
californica var. californica)
California false pennyroyal (Hedeoma nanum ssp. californicum)
California fan palm (Washingtonia
filifera)
California fiddleleaf (Nama californicum)
California figwort (Scrophularia californica)
California filago (Logfia filaginoides)
California fuchsia (Epilobium
canum ssp. latifolium)
California geranium (Geranium californicum)
California goldenrod (Solidago
velutina ssp. californica)
California goldfields (Lasthenia californica ssp. californica)
California goosefoot (Chenopodium
californicum)
California groundcone (Kopsiopsis
strobilacea)
California groundsel (Senecio californicus)
California hedge nettle (Stachys
bullata)
California hesperochiron (Hesperochiron
californicus)
California huckleberry (Vaccinium
ovatum)
California indigo bush (Psorothamnus
arborescens var. simplicifolius)
California juniper (Juniperus
californica)
California kallstroemia (Kallstroemia
californica)
California lace fern (Aspidotis californica)
California lomatium (Lomatium californicum)
California loosestrife (Lythrum
californicum)
California lotus (Acmispon wrangelianus)
California maidenhair fern (Adiantum
jordanii)
California malacothrix (Malacothrix californica)
California man-root (Marah fabacea)
California marina (Marina orcuttii var. orcuttii)
California matchweed (Gutierrezia
californica)
California milkweed (Asclepias californica)
California mustard (Guillenia lasiophylla)
California plantain (Plantago erecta)
California polypody (Polypodium californicum)
California popcorn flower (Plagiobothrys
collinus var. fulvescens)
California poppy (Eschscholzia
californica)
California sagebrush (Artemisia
californica)
California saltbush (Atriplex californica)
California saxifrage (Saxifraga
californica)
California sea-pink (Armeria maritima
ssp. californica)
California sunflower (Helianthus californicus)
California squirreltail (Elymus
elymoides ssp. californicus)
California tea (Rupertia physodes)
California thistle (Cirsium
occidentale var. californicum)
California tickseed (Leptosyne californica)
California trixis (Trixis
californica var. californica)
California wax-myrtle (Morella californica)
Caltha-leaved phacelia (Phacelia
calthifolia)
Caltrop, Few-flowered (Kallstroemia
parviflora)
Campion, Menzies' (Silene menziesii)
Cancerwort, Sharpleaf (Kickxia elatine)*
Canchalagua (Zeltnera
venusta)
Candleholder dudleya (Dudleya candelabrum)
Cane or valley cholla (Cylindropuntia californica var.
parkeri)
Canterbury bells (Phacelia
minor)
Canyon bird's-foot trefoil (Acmispon
argyraeus var. argyraeus)
Canyon clarkia (Clarkia
epilobioides)
Canyon dodder (Cuscuta subinclusa)
Canyon dudleya (Dudleya cymosa ssp. cymosa)
Canyon live oak (Quercus
chrysolepis)
Canyon silktassel (Garrya veatchii)
Canyon sunflower (Venegasia
carpesioides)
Canyon sweet pea (Lathyrus
vestitus var. vestitus)
Cape-ivy (Delairea odorata)*
Caper spurge (Euphorbia lathyris)*
Caraway-leaved gilia (Saltugilia caruifolia)
Caraway-leaved lomatium (Lomatium
caruifolium var. caruifolium)
Cardoon (Cynara cardunculus)*
Carlowrightia, Arizona (Carlowrightia arizonica)
Carolina geranium (Geranium
carolinianum)
Carpet clover,
Grant's (Trifolium
monanthum var. grantianum)
Mountain (Trifolium
monanthum var. monanthum)
Carpet-weed, Threadstem (Mollugo cerviana)
Castor bean (Ricinus communis)*
Catalina cherry (Prunus ilicifolia ssp.
lyonii)
Catalina crossosoma (Crossosoma californicum)
Catalina Island bedstraw (Galium
catalinense)
Catalina Island mountain mahogany (Cercocarpus
traskiae)
Catalina mariposa lily (Calochortus
catalinae)
Catchfly,
Lemmon's (Silene
lemmonii)
Many-nerved (Silene
multinervia)
Parish's (Silene
parishii)
Sleepy (Silene
antirrhina)
White (Silene
verecunda)
Catchfly gentian (Eustoma exaltatum ssp. exaltatum)
Catclaw acacia (Senegalia greggii)
Caterpillar phacelia,
(Phacelia cicutaria var. cicutaria)
(Phacelia
cicutaria var. hispida)
Hubby's (Phacelia
cicutaria var. hubbyi)
Cat's ear,
Rough (Hypochaeris
radicata)*
Smooth (Hypochaeris
glabra)*
Cattail,
Broad-leaved (Typha
latifolia)
Southern (Typha
domingensis)
Cattle spinach (Atriplex polycarpa)
Caulanthus,
Clasping-leaved (Caulanthus
amplexicaulis)
Hall's (Caulanthus
hallii)
Cave-dwelling evening primrose (Oenothera cavernae)
Ceanothus,
Big-pod (Ceanothus
megacarpus var. megacarpus)
Cupleaf (Ceanothus
perplexans)
Greenbark (Ceanothus
spinosus)
Hairy (Ceanothus
oliganthus)
Hoaryleaf (Ceanothus
crassifolius)
Island (Ceanothus
arboreus)
Lakeside (Ceanothus
cyaneus)
Mojave (Ceanothus
vestitus)
Palmer's (Ceanothus
palmeri)
Wartleaf (Ceanothus papillosus)
Wartstem (Ceanothus
verrucosus)
Woollyleaf (Ceanothus
tomentosus)
Cedar, Incense (Calocedrus decurrens)
Celery,
[Common] (Apium graveolens)*
Wild (Apiastrum angustifolium)
Century plant (Agave americana)*
Cereal rye (Secale cereale)*
Cereus, Golden-spined (Bergerocactus
emoryi)
Chaffbush (Amphipappus fremontii var. fremontii)
Chaffweed, Common (Anagallis minima)
Chalk dudleya (Dudleya pulverulenta)
Chamise (Adenostoma fasciculatum)
Chamomile, Globe (Oncosiphon piluliferum)*
Changeable phacelia (Phacelia mutabilis)
Channel Island scrub oak (Quercus
pacifica)
Channel Island tree poppy (Dendromecon
harfordii)
Channel Islands beach primrose (Camissoniopsis
cheiranthifolia ssp. cheiranthifolia)
Chaparral beargrass (Nolina cismontana)
Chaparral broom-rape (Orobanche bulbosa)
Chaparral currant (Ribes
malvaceum var. viridifolium)
Chaparral gilia (Gilia angelensis)
Chaparral honeysuckle (Lonicera
interrupta)
Chaparral pea,
[Common] (Pickeringia
montana var. montana)
Woolly (Pickeringia
montana var. tomentosa)
Chaparral prickly-pear (Opuntia
oricola)
Chaparral whitethorn (Ceanothus
leucodermis)
Chaparral yucca (Hesperoyucca
whipplei)
Charlotte's phacelia (Phacelia nashiana)
Cheat grass (Bromus tectorum)*
Checkerbloom,
Big Bear (Sidalcea
pedata)
Dwarf (Sidalcea
malviflora ssp. dolosa)
Few-leaved (Sidalcea
sparsifolia)
Island (Sidalcea
malviflora ssp. malviflora)
Checker fiddleneck (Amsinckia tessellata
var. tessellata)
Cheesebush (Ambrosia salsola var. salsola)
Cheeseweed (Malva parviflora)*
Cherry,
Bitter (Prunus
emarginata)
Catalina (Prunus
ilicifolia ssp. lyonii)
Hollyleaf (Prunus
ilicifolia ssp. ilicifolia)
Hollyleaf, fruit (Prunus
ilicifolia ssp. ilicifolia)
Chess,
Chilean (Bromus berteroanus)
Soft (Bromus hordeaceus)*
Chia (Salvia columbariae)
Chick lupine (Lupinus microcarpus var. horizontalis)
Chickweed,
[Common] (Stellaria
media)*
Mouse-ear (Cerastium
glomeratum)*
Perennial (Cerastium
fontanum ssp. vulgare)*
Chickweed oxytheca (Sidotheca caryophylloides)
Chicory,
California (Rafinesquia
californica)
[Common] (Cichorium
intybus)*
Desert (Rafinesquia
neomexicana)
Chicory-leaved stephanomeria (Stephanomeria
cichoriacea)
Child's collinsia (Collinsia childii)
Chile aster (Symphyotrichum chilense)
Chilean chess (Bromus berteroanus)
Chinchweed (Pectis
papposa var. papposa)
Chinese caps (Euphorbia crenulata)
Chinese houses,
[Common] (Collinsia
heterophylla)
Southern (Collinsia
concolor)
Chinquapin,
Bush (Chrysolepis
sempervirens)
Bush, seed pod (Chrysolepis
sempervirens)
Chocolate lily (Fritillaria
biflora var. biflora)
Chokecherry, Western (Prunus virginiana
var. demissa)
Cholla,
Buckhorn (Opuntia
acanthocarpa var. coloradensis)
Cane, see Valley cholla
Coast (Opuntia prolifera)
Fosberg's (Opuntia
fosbergii)
Gander's (Cylindropuntia
ganderi)
Jumping (Opuntia
bigelovii)
Mat (Opuntia parishii)
Pencil (Opuntia
ramosissima)
Silver (Opuntia
echinocarpa)
Valley (Cylindropuntia
californica var. parkeri)
Wolf's (Opuntia
wolfii)
Chorizanthe, Spiny, see Rigid spineflower
Chuparosa (Justicia
californica)
Cienega seca oxytheca (Acanthoscyphus parishii var. cienegensis)
Cima milkvetch (Astragalus cimae var. cimae)
Cinquefoil,
Biennial (Potentilla biennis)
Ewan's (Drymocallis cuneifolia var. ewanii
Nevada (Drymocallis lactea var. lactea)
Norwegian (Potentilla norvegica)*
Silverleaf (Potentilla
anserina ssp. anserina)
Slender (Potentilla
gracilis var. fastigiata)
Sticky (Drymocallis
glandulosa var. reflexa)
Sticky (Drymocallis
glandulosa var. viscida)
Sticky (Drymocallis glandulosa var. wrangelliana)
Wheeler's (Potentilla
wheeleri)
Clarkia,
Canyon (Clarkia
epilobioides)
Diamond-petalled (Clarkia
rhomboidea)
Dudley's (Clarkia
dudleyana)
Elegant (Clarkia
unguiculata)
Mountain (Clarkia heterandra)
Purple (Clarkia
purpurea ssp. quadrivulnera)
Ramona (Clarkia
similis)
Speckled (Clarkia cylindrica ssp. clavicarpa)
Speckled (Clarkia
cylindrica ssp. cylindrica)
Clasping pepperweed (Lepidium perfoliatum)*
Clasping-leaved caulanthus (Caulanthus
amplexicaulis)
Cleome, Naked (Cleome sparsifolia)
Cleveland sage (Salvia
clevelandii)
Cleveland's beardtongue (Penstemon
clevelandii var. clevelandii)
Cleveland's bush monkeyflower (Mimulus
clevelandii)
Cleveland's cryptantha (Cryptantha
clevelandii)
Cleveland's horkelia (Horkelia clevelandii)
Cleveland's lipfern (Cheilanthes clevelandii)
Cleveland's muilla (Muilla clevelandii)
Cliff aster, short-leaved (Malacothrix
saxatilis var. tenuifolia)
Cliff brake,
California (Pellaea
mucronata var. californica)
[Common] (Pellaea
truncata)
Cliff malacothrix (Malacothrix saxatilis
var. implicata)
Cliff rose (Purshia mexicana var. stansburyana)
Cliff spurge (Euphorbia misera)
Cliff sword fern (Polystichum imbricans
ssp. curtum)
Climbing bedstraw (Galium nuttallii
ssp. nuttallii)
Climbing milkweed (Funastrum
cynanchoides var. hartwegii)
Cloak fern,
California (Notholaena californica)
Jones' (Argyrochosma jonesii)
Scaly (Astrolepis cochisensis)
Clokey's gilia (Gilia clokeyi)
Clover,
Balloon (Trifolium
depauperatum var. truncatum)
Bearded (Trifolium
barbigerum)
Creek (Trifolium
obtusiflorum)
Grant's carpet (Trifolium
monanthum var. grantianum)
Indian (Trifolium
albopurpureum var. albopurpureum)
Mountain (Trifolium
wormskioldii)
Mountain carpet (Trifolium
monanthum var. monanthum)
Pin-point (Trifolium
gracilentum var. gracilentum)
Red (Trifolium pratense)*
Rose (Trifolium hirtum)*
Small-head field (Trifolium
microcephalum)
Spanish (Acmispon americanus var. americanus)
Summer (Trifolium
longipes var. nevadense)
Tomcat (Trifolium
willdenovii)
Tree (Trifolium ciliolatum)
White (Trifolium
repens)*
Whitetip (Trifolium
variegatum)
Clover fern (Marsilea vestita ssp. vestita)
Clustered blazing star (Mentzelia congesta)
Clustered broom-rape (Orobanche
fasciculata)
Clustered field sedge (Carex praegracilis)
Clustered tidy lupine (Lupinus lepidus
var. confertus)
Clustered toad rush (Juncus bufonius
var. congestus)
Coast barrel cactus (Ferocactus
viridescens)
Coast boykinia (Boykinia occidentalis)
Coast bush lupine (Lupinus arboreus)
Coast cholla (Cylindropuntia prolifera)
Coast goldenbush (Isocoma
menziesii var. vernonioides)
Coast goosefoot (Chenopodium macrospermum)*
Coast live oak (Quercus
agrifolia var. agrifolia)
Coast live oak, Southern (Quercus
agrifolia var. oxyadenia)
Coast locoweed (Astragalus
trichopodus var. lonchus)
Coast morning glory (Calystegia macrostegia
ssp. cyclostegia)
Coast paintbrush (Castilleja affinis ssp. affinis)
Coast prickly pear (Opuntia
littoralis)
Coast range bindweed (Calystegia collina ssp. venusta)
Coast range melic (Melica imperfecta)
Coast range triteleia (Triteleia
lugens)
Coast silktassel (Garrya elliptica)
Coastal gumplant (Grindelia stricta
var. platyphylla)
Coastal lotus (Acmispon maritimus var.
maritimus)
Coastal scrub oak (Quercus dumosa)
Coastal wood fern (Dryopteris arguta)
Coastweed (Amblyopappus pusillus)
Cobweb thistle (Cirsium
occidentale var. occidentale)
Cocklebur,
[Common] (Xanthium
strumarium)
Spiny (Xanthium
spinosum)
Coffeeberry,
[Common] (Frangula
californica ssp. californica)
Hoary (Frangula californica ssp. tomentella)
Sierra hoary (Frangula californica ssp. cuspidata)
Coffee fern (Pellaea andromedifolia)
Collar lupine (Lupinus
truncatus)
Collinsia,
Child's (Collinsia
childii)
Desert (Collinsia
callosa)
Parry's (Collinsia
parryi)
Small-flowered (Collinsia
parviflora)
Wright's (Collinsia
torreyi var. wrightii)
Collomia,
Large-flowered (Collomia
grandiflora)
Slenderleaf (Collomia
linearis)
Columbia cutleaf (Hymenopappus filifolius
var. lugens)
Columbine (Aquilegia
formosa)
Comb-leaved threadplant (Nemacladus pinnatifidus)
Common beet (Beta vulgaris ssp. maritima)*
Common beggar-ticks (Bidens pilosa)*
Common chaffweed (Anagallis minima)
Common deerweed (Acmispon glaber var. glaber)
Common eucrypta (Eucrypta chrysanthemifolia var. bipinnatifida)
Common eucrypta (Eucrypta
chrysanthemifolia var. chrysanthemifolia)
Common fiddleneck (Amsinckia
intermedia)
Common flax (Linum usitatissimum)*
Common groundsel (Senecio vulgaris)*
Common horsetail (Equisetum arvense)
Common knotweed (Polygonum aviculare ssp. depressum)*
Common linanthus (Leptosiphon
parviflorus)
Common madia (Madia
elegans)
Common Mediterranean grass (Schismus barbatus)*
Common muilla (Muilla maritima)
Common phacelia (Phacelia distans)
Common reed (Phragmites australis)
Common scouring rush (Equisetum hyemale
ssp. affine)
Common skullcap (Scutellaria tuberosa)
Common slender phlox (Microsteris gracilis)
Common spikerush (Eleocharis macrostachya)
Common sunflower (Helianthus
annuus)
Common toad rush (Juncus bufonius var.
bufonius)
Common wheat (Triticum aestivum)*
Common wild oats (Avena fatua)*
Condensed phlox (Phlox condensata)
Conejo buckwheat (Eriogonum crocatum)
Cooper's boxthorn (Lycium
cooperi)
Cooper's broom-rape (Orobanche cooperi)
Cooper's dyssodia (Adenophyllum cooperi)
Cooper's goldenbush (Ericameria cooperi
var. cooperi)
Cooper's goldflower (Hymenoxys cooperi)
Cooper's jewelflower (Caulanthus
cooperi)
Cootamundra wattle (Acacia baileyana)*
Copperleaf, California (Acalypha
californica)
Coralroot, Spotted (Corallorhiza maculata)
Cord grass (Spartina foliosa)
Coreopsis,
Bigelow's (Leptosyne
bigelovii)
Giant (Leptosyne
gigantea)
Corn chamomile (Anthemis arvensis)*
Corn lily (Veratrum californicum
var. californicum)
Corn spurrey (Spergula arvensis)*
Cotton fern (Cheilanthes newberryi)
Cotton-batting plant (Pseudognaphalium
stramineum)
Cottonthorn,
[Common] (Tetradymia
comosa)
Mojave (Tetradymia
stenolepis)
Cottontop cactus (Echinocactus polycephalus
var. polycephalus)
Cottonweed, Slender (Micropus californicus
var. californicus)
Cottonwood,
Black (Populus
balsamifera)
Fremont's (Populus
fremontii ssp. fremontii)
Coues' senna (Senna covesii)
Coulter pine (Pinus
coulteri)
Coulter's globemallow (Sphaeralcea coulteri)
Coulter's horseweed (Laennecia coulteri)
Coulter's jewelflower (Caulanthus
coulteri)
Coulter's lupine (Lupinus sparsiflorus)
Coulter's lyrepod (Lyrocarpa coulteri
var. palmeri)
Coulter's spiderling (Boerhavia coulteri var. palmeri)
Coville's dwarf abronia (Abronia
nana var. covillei)
Coville's fleabane (Erigeron breweri
var. covillei)
Coville's lipfern (Cheilanthes covillei)
Cow parsnip (Heracleum maximum)
Coyote brush (Baccharis
pilularis ssp. consanguinea)
Coyote melon (Cucurbita
palmata)
Coyote tobacco (Nicotiana attenuata)
Cream bush
[Common] (Holodiscus
discolor var. discolor)
Small-leaved (Holodiscus
discolor var. microphyllus)
Cream cups (Platystemon
californicus)
Cream gilia (Leptosiphon aureus ssp. decorus)
Creek clover (Trifolium obtusiflorum)
Creek monkeyflower (Mimulus
guttatus)
Creeping grape holly (Berberis aquifolium
var. repens)
Creeping sage (Salvia sonomensis)
Creeping snowberry (Symphoricarpos mollis)
Creeping wildrye (Leymus triticoides)*
Creeping wood-sorrel (Oxalis corniculata)*
Creosote bush (Larrea
tridentata)
Cress,
Bitter (Cardamine
oligosperma)
Mouse-ear (Arabidopsis
thaliana)*
Wart (Lepidium didymum)*
Winter (Barbarea
orthoceras)
Crested milkvetch (Astragalus bicristatus)
Crested onion (Allium atrorubens var. cristatum)
Cretan mallow (Lavatera cretica)*
Crete weed (Hedypnois cretica)*
Crimson pitcher sage (Salvia
spathacea)
Crimson spot rock-rose (Cistus ladanifer
var. maculatus)*
Crinklemat,
Woody (Tiquilia canescens var. canescens)
Fanleaf (Tiquilia
plicata)
Nuttall's (Tiquilia
nuttallii)
Palmer's (Tiquilia
palmeri)
Crossosoma, Catalina (Crossosoma
californicum)
Croton,
California (male flowers) (Croton
californicus)
California (female flowers) (Croton
californicus)
Wiggins's (Croton wigginsii)
Crucifixion thorn (Castela emoryi)
Cryptantha,
Bearded (Cryptantha
barbigera var. barbigera)
Bownut (Cryptantha
cinerea var. abortiva)
Bush-loving (Cryptantha dumetorum)
Bushy (Cryptantha
racemosa)
Cleveland's (Cryptantha clevelandii)
Curvenut (Cryptantha
recurvata)
Cushion (Cryptantha
circumscissa var. circumscissa)
Ferguson's bearded (Cryptantha barbigera var. fergusoniae)
Gravel (Cryptantha decipiens)
Guadalupe (Cryptantha
maritima)
Large-flowered (Cryptantha
intermedia var. intermedia)
Minute-flowered (Cryptantha micromeres)
Mojave (Cryptantha
mohavensis)
Narrow-leaved (Cryptantha
angustifolia)
Nevada (Cryptantha nevadensis)
New York Mountains (Cryptantha
tumulosa)
Pinewoods (Cryptantha
simulans)
Prickly (Cryptantha echinella)
Prickly (Cryptantha
muricata)
Ribbed (Cryptantha
costata)
Roughseed (Cryptantha flavoculata)
Scented (Cryptantha
utahensis)
Smallflower (Cryptantha
micrantha)
Tejon (Cryptantha
microstachys)
Virgin River (Cryptantha
virginensis)
Wingnut (Cryptantha
pterocarya)
Yellow (Cryptantha
confertiflora)
Crystalline iceplant (Mesembryanthemum
crystallinum)*
Cucumber, Wild (Marah
macrocarpus var. macrocarpus)
Cudweed,
Lowland (Gnaphalium
palustre)
Pink (Pseudognaphalium
ramosissimum)
Purple (Gamochaeta ustulata)
Weedy (Pseudognaphalium
luteoalbum)*
Cultivated four o'clock (Mirabilis
jalapa)*
Cupleaf ceanothus (Ceanothus perplexans)
Curl-leaf mountain mahogany (Cercocarpus
ledifolius var. intermontanus)
Curly dock (Rumex crispus)*
Currant,
Chaparral (Ribes
malvaceum var. viridifolium)
Evergreen (Ribes
viburnifolium)
Golden (Ribes
aureum var. gracillimum)
Mountain pink (Ribes
nevadense)
Wax (Ribes cereum
var. cereum)
White-flowering (Ribes
indecorum)
Cursed crowfoot (Ranunculus sceleratus)
Curved sicklegrass (Parapholis incurva)*
Curved-stem phacelia (Phacelia curvipes)
Curvenut cryptantha (Cryptantha recurvata)
Curvenut pectocarya (Pectocarya recurvata)
Curvepod yellowcress (Rorippa curvisiliqua)
Cushenbury buckwheat (Eriogonum
ovalifolium var. vineum)
Cushenbury milkvetch (Astragalus
albens)
Cushenbury oxytheca (Acanthoscyphus parishii var. goodmaniana)
Cushion cryptantha (Cryptantha circumscissa var. ciscumscissa)
Cutleaf, Columbia (Hymenopappus filifolius
var. lugens)
Cutleaf daisy (Erigeron compositus)
Cutleaf geranium (Geranium dissectum)*
Cut-leaf plantain (Plantago coronopus)*
Cuyamaca cypress (Hesperocyparis stephensonii)
Cycladenia, Showy (Cycladenia humilis
var. venusta)
Cymopterus, Gilman's (Cymopterus gilmanii)
Cypress,
Cuyamaca (Hesperocyparis stephensonii)
Tecate (Hesperocyparis
forbesii)
Daisy,
African (Osteospermum
ecklonis)*
Cutleaf (Erigeron
compositus)
English (Bellis
perennis)*
Ox-eye (Leucanthemum
vulgare)*
Panamint (Enceliopsis
covillei)
Rock (Perityle
emoryi)
Seaside (Erigeron
glaucus)
Silver Lake (Arida arizonica)
Woolly (Eriophyllum
wallacei)
Daisy desertstar (Monoptilon bellidiforme)
Dalea,
Downy (Dalea mollissima)
Silky (Dalea mollis)
Dallis grass (Paspalum dilatatum)*
Dandelion,
Annual mountain (Agoseris heterophylla var. heterophylla)
California (Taraxacum
californicum)
[Common] (Taraxacum
officinale)*
Desert (Malacothrix
glabrata)
Mountain (Agoseris
grandiflora var. grandiflora)
Spearleaf mountain (Agoseris
retrorsa)
Darnel (Lolium temulentum)*
Datura, Sacred (Datura
wrightii)
Davidson's blue-eyed mary (Collinsia bartsiifolia var. davidsonii)
Davidson's buckwheat (Eriogonum davidsonii)
Davidson's lotus (Acmispon nevadensis var.
davidsonii)
Davidson's phacelia (Phacelia davidsonii)
Davidson's stonecrop (Sedum niveum)
Davis's pitted onion (Allium lacunosum
var. davisiae)
Davy gilia (Gilia latiflora ssp. davyi)
Deane's wirelettuce (Stephanomeria
exigua ssp. deanei)
Death camas (Toxicoscordion venenosum var. venenosum)
Death Valley brown-eyed primrose (Chylismia
claviformis ssp. funerea)
Death Valley monkeyflower (Mimulus
rupicola)
Death Valley phacelia (Phacelia
vallis-mortae)
Death Valley sage (Salvia funerea)
Deerbrush (Ceanothus integerrimus var. macrothyrsus)
Deergrass (Muhlenbergia rigens)
Deerweed,
Common (Acmispon glaber var. glaber)
Island (Acmispon
dendroideus var. dendroideus)
San Miguel Island (Acmispon
dendroideus var. veatchii)
Short-winged (Acmispon glaber var. brevialatus)
Silky (Acmispon procumbens var. procumbens)
Dehesa nolina (Nolina interrata)
Del Mar manzanita (Arctostaphylos glandulosa
ssp. crassifolia)
Delicate buttercup (Ranunculus hebecarpus)
Deltoid balsamroot (Balsamorhiza deltoidea)
Dense false-gilia (Allophyllum gilioides
ssp. gilioides)
Dense mistletoe (Phoradendron bolleanum)
Dense sedge (Carex densa)
Dense-flowered owl's clover (Castilleja
densiflora ssp. gracilis)
Dense-flowered rein orchid (Piperia
elongata)
Dense-fruited monkeyflower (Mimulus constrictus)
Desert agave (Agave deserti)
Desert almond (Prunus fasciculata var.
fasciculata)
Desert alyssum (Lepidium
fremontii var. fremontii)
Desert apricot (Prunus fremontii)
Desert baccharis (Baccharis sergiloides)
Desert beardtongue (Penstemon
fruticiformis var. fruticiformis)
Desert bitterbrush (Purshia tridentata var.
glandulosa)
Desert bluebells (Phacelia
campanularia ssp. campanularia)
Desert bluebells (Phacelia campanularia ssp. vasiformis)
Desert brickellbush (Brickellia desertorum)
Desert calico (Loeseliastrum matthewsii)
Desert candle (Caulanthus
inflatus)
Desert chicory (Rafinesquia
neomexicana)
Desert collinsia (Collinsia callosa)
Desert crested wheat grass (Agropyron
cristatum ssp. pectinatum)*
Desert dandelion (Malacothrix
glabrata)
Desert dicoria (Dicoria canescens)
Desert dodder (Cuscuta denticulata)
Desert evening primrose (Oenothera
californica ssp. avita)
Desert figwort (Scrophularia desertorum)
Desert-fir (Peucephyllum schottii)
Desert fivespot (Eremalche
rotundifolia)
Desert globemallow (Sphaeralcea ambigua
var. rugosa)
Desert gold poppy (Eschscholzia glyptosperma)
Desert gooseberry (Ribes velutinum)
Desert heron's bill (Erodium texanum)
Desert hoary-aster (Dieteria
canescens var. leucanthemifolia)
Desert-holly (Atriplex hymenelytra)
Desert indian paintbrush (Castilleja
chromosa)
Desert ironwood (Olneya tesota)
Desert larkspur (Delphinium
parishii ssp. parishii)
Desert lavender (Hyptis
emoryi)
Desert lily (Hesperocallis
undulata)
Desert linanthus (Linanthus demissus)
Desert locust (Robinia neomexicana)
Desert lupine (Lupinus shockleyi)
Desert marigold (Baileya
multiradiata)
Desert mariposa lily (Calochortus kennedyi var. munzii)
Desert milkweed (Ascelpias
erosa)
Desert mistletoe (Phoradendron californicum)
Desert monardella (Monardella nana) (Formerly Monardella nana ssp. arida)
Desert needlegrass (Stipa speciosa)
Desert olive (Forestiera pubescens)
Desert paintbrush (Castilleja linariifolia)
Desert pale gilia (Aliciella hutchinsifolia)
Desert panic grass (Panicum urvilleanum)
Desert parsley (Lomatium mohavense)
Desert peach (Prunus andersonii)
Desert pennyroyal (Monardella
exilis)
Desert penstemon (Penstemon pseudospectabilis)
Desert portulaca (Portulaca halimoides)
Desert pot-herb (Cistanthe ambigua)
Desert prickly-pear (Opuntia phaeacantha)
Desert prunus (Prunus eremophila)
Desert rocknettle (Eucnide urens)
Desert rock pea (Acmispon rigidus)
Desert sage (Salvia eremostachya)
Desert sand verbena
(Abronia
villosa var. aurita)
(Abronia
villosa var. villosa)
Desert sandwort (Eremogone macradenia
var. macradenia)
Desert scrub oak (Quercus john-tuckeri)
Desert senna (Senna
armata)
Desert snowberry (Symphoricarpos longiflorus)
Desert spike-moss (Selaginella eremophila)
Desert spiny star (Coryphantha chlorantha)
Desert spurge, see Sonoran spurge
Desert stars (Monoptilon
bellioides)
Desert straw (Stephanomeria pauciflora var.
pauciflora)
Desert sunflower (Geraea
canescens)
Desert sweet (Chamaebatiaria millefolium)
Desert thistle (Cirsium neomexicanum)
Desert thorn (Lycium brevipes var. brevipes)
Desert thornapple (Datura discolor)
Desert threadplant (Nemacladus rubescens)
Desert tobacco (Nicotiana obtusifolia)
Desert trumpet (Eriogonum
inflatum)
Desert twining snapdragon (Antirrhinum
filipes)
Desert wild buckwheat (Eriogonum
fasciculatum var. polifolium)
Desert willow (Chilopsis
linearis ssp. arcuata)
Desert woolstar (Eriastrum eremicum ssp.
eremicum)
Desert zygadene (Zigadenus brevibracteatus)
Devil's thorn (Emex spinosa)*
Diamond-petalled clarkia (Clarkia
rhomboidea)
Dicoria, Desert (Dicoria canescens)
Ditaxis
Narrow-leaf (Ditaxis
lanceolata)
New Mexico (Ditaxis
neomexicana)
Ditch beard grass (Polypogon interruptus)*
Diverse-leaved pondweed (Potamogeton diversifolius)
Dobiepod (Tropidocarpum gracile)
Dock,
Curly (Rumex crispus)*
Fiddle (Rumex pulcher)*
Whorled (Rumex conglomeratus)*
Willow-leaved (Rumex
salicifolius var. denticulatus)
Dodder,
California (Cuscuta
californica var. californica)
Canyon (Cuscuta
subinclusa)
Desert (Cuscuta
denticulata)
Papillate (Cuscuta
californica var. papillosa)
Salt marsh (Cuscuta
salina)
Short-flowered California (Cuscuta
occidentalis)
Western field (Cuscuta
campestris)
Dogbane, Spreading (Apocynum androsaemifolium)
Dogwood,
American (Cornus
sericea ssp. sericea)
Mountain (Cornus
nuttallii)
Dotted indigo bush (Psorothamnus polydenius)
Douglas phacelia (Phacelia douglasii)
Douglas's iris (Iris
douglasiana)
Douglas's knotweed (Polygonum douglasii ssp. douglasii)
Douglas's knotweed (Polygonum douglasii ssp. johnstonii)
Douglas's microseris (Microseris
douglasii ssp. douglasii)
Douglas's silver bush lupine (Lupinus
albifrons var. douglasii)
Douglas's stitchwort (Minuartia douglasii)
Douglas's violet (Viola douglasii)
Doveweed (Croton
setiger)
Downingia, Spotted (Downingia bella)
Downy dalea (Dalea mollissima)
Downy monkeyflower (Mimulus pilosus)
Draba,
Alkali (Cusickiella
douglasii)
California (Draba cuneifolia)
Slender (Draba albertina)
Southern California (Draba
corrugata)
Southern California rock (Draba saxosa)
Spring (Draba verna)
Duckweed, Turion (Lemna turionifera)
Dudleya,
Agoura (Dudleya
cymosa ssp. agourensis)
Arizona chalk (Dudleya
arizonica)
Candleholder (Dudleya
candelabrum)
Canyon (Dudleya cymosa ssp. cymosa)
Chalk (Dudleya
pulverulenta)
Greene's (Dudleya
greenei)
Hasse's (Dudleya
virens ssp. hassei)
Lanceleaf (Dudleya
lanceolata)
Low canyon (Dudleya
cymosa ssp. pumila)
Many-stemmed (Dudleya
multicaulis)
Orcutt's (Dudleya
attenuata ssp. orcuttii)
Rock (Dudleya
saxosa ssp. aloides)
San Bernardino Mountains (Dudleya
abramsii ssp. affinis)
San Gabriel Mountains (Dudleya
densiflora)
San Gabriel River (Dudleya
cymosa ssp. crebifolia)
Santa Barbara Island (Dudleya
traskiae)
Sticky (Dudleya
viscida)
Variegated (Dudleya
variegata)
Dudley's clarkia (Clarkia dudleyana)
Dune broom (Chaetadelpha wheeleri)
Dune buckwheat (Eriogonum deserticola)
Dune grass, Eureka Valley (Swallenia
alexandrae)
Dune lupine (Lupinus chamissonis)
Dune primrose (Oenothera deltoides ssp. deltoides)
Dune spurge (Chamaesyce ocellata ssp. arenicola)
Dune sunflower (Helianthus niveus ssp.
canescens)
Dunedelion (Malacothrix incana)
Dunn's lobelia (Lobelia dunnii var. serrata)
Dunn's mariposa lily (Calochortus
dunnii)
Durango root (Datisca glomerata)
Dusty maidens (Chaenactis douglasii var.
douglasii)
Dwarf abronia, Coville's (Abronia
nana ssp. covillei)
Dwarf alpine paintbrush (Castilleja
nana)
Dwarf athysanus (Athysanus pusillus)
Dwarf checkerbloom (Sidalcea malviflora
ssp. dolosa)
Dwarf filago (Logfia depressa)
Dwarf four o'clock (Mirabilis albida)
Dwarf goldenbush (Ericameria nana)
Dwarf hawksbeard (Crepis nana)
Dwarf lewisia (Lewisia pygmaea)
Dwarf mountain ragwort (Senecio fremontii var. occidentalis)
Dwarf nettle (Urtica urens)*
Dwarf pearlwort (Sagina apetala)*
Dwarf white milkvetch (Astragalus didymocarpus var. dispermus)
Dwarf woollyheads (Psilocarphus brevissimus
var. brevissimus)
Dwarf-mistletoe,
Fir (Arceuthobium
abietinum)
Pine (Arceuthobium
campylopodum)
Dyssodia,
Cooper's (Adenophyllum
cooperi)
San Felipe (Adenophyllum
porophylloides)
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