Scientific Name

Common Name

Dalea ornata

ornate dalea

Delphinium gypsophilum ssp. parviflorum

small-flowered gypsum-loving larkspur

Delphinium hesperium ssp. cuyamacae

Cuyamaca larkspur

Delphinium hutchinsoniae

Hutchinson's larkspur

Delphinium parishii ssp. subglobosum

intermediate larkspur

Delphinium parryi ssp. purpureum

Mt. Pinos larkspur

Delphinium stachydeum

spiked larkspur

Delphinium umbraculorum

umbrella larkspur

Delphinium variegatum ssp. thornei

Thorne's royal larkspur

Dendromecon harfordii var. rhamnoides

island tree poppy

Deschampsia atropurpurea

mountain hair grass

Dirca occidentalis

western leatherwood

Dissanthelium californicum

California dissanthelium

Ditaxis californica

California ditaxis

Ditaxis clariana

glandular ditaxis

Dodecahema leptoceras

slender-horned spineflower

Draba asterophora var. asterophora

Tahoe draba

Draba asterophora var. macrocarpa

Cup Lake draba

Draba californica

California draba

Draba cana

hoary draba

Draba cruciata

Mineral King draba

Draba incrassata

Sweetwater Mountains draba

Draba monoensis

White Mountains draba

Draba sharsmithii

Mt. Whitney draba

Draba sierrae

Sierra draba

Draba subumbellata

mound draba

Dryopteris filix-mas

male fern

Dudleya abramsii ssp. affinis

San Bernardino Mountains dudleya

Dudleya abramsii ssp. murina

San Luis Obispo dudleya

Dudleya abramsii ssp. parva

Conejo dudleya

Dudleya alainae

Banner dudleya

Dudleya blochmaniae ssp. insularis

Santa Rosa Island dudleya

Dudleya calcicola

limestone dudleya

Dudleya candelabrum

candleholder dudleya

Dudleya cymosa ssp. costafolia

Pierpoint Springs dudleya

Dudleya cymosa ssp. crebrifolia

San Gabriel River dudleya

Dudleya densiflora

San Gabriel Mountains dudleya

Dudleya greenei

Greene's dudleya

Dudleya variegata

variegated dudleya

Eleocharis parvula

small spikerush

Eleocharis quadrangulata

four-angled spikerush

Elymus californicus

California bottle-brush grass

Elymus scribneri

Scribner's wheat grass

Empetrum nigrum ssp. hermaphroditum

black crowberry

Enceliopsis nudicaulis

naked-stemmed daisy

Enneapogon desvauxii

nine-awned pappus grass

Epilobium howellii

subalpine fireweed

Epilobium nivium

Snow Mountain willowherb

Epilobium oreganum

Oregon fireweed

Epilobium septentrionale

Humboldt County fuchsia

Epilobium siskiyouense

Siskiyou fireweed

Equisetum palustre

marsh horsetail

Eriastrum luteum

yellow-flowered eriastrum

Eriastrum virgatum

virgate eriastrum

Ericameria cuneata var. macrocephala

Laguna Mountains goldenbush

Ericameria gilmanii

Gilman's goldenbush

Ericameria palmeri ssp. palmeri

Palmer's goldenbush

Erigeron angustatus

narrow-leaved daisy

Erigeron biolettii

streamside daisy

Erigeron bloomeri var. nudatus

Waldo daisy

Erigeron breweri var. bisanctus

pious daisy

Erigeron breweri var. jacinteus

San Jacinto Mountains daisy

Erigeron calvus

bald daisy

Erigeron decumbens var. robustior

robust daisy

Erigeron elegantulus

volcanic daisy

Erigeron inornatus var. calidipetris

hot rock daisy

Erigeron inornatus var. keilii

Keil's daisy

Erigeron mariposanus

Mariposa daisy

Erigeron multiceps

Kern River daisy

Erigeron petrophilus var. sierrensis

northern Sierra daisy

Erigeron petrophilus var. viscidulus

Klamath daisy

Erigeron sanctarum

Saint's daisy

Erigeron serpentinus

serpentine daisy

Erigeron uncialis var. uncialis

limestone daisy

Eriodictyon angustifolium

narrow-leaved yerba santa

Eriogonum apricum var. prostratum

Irish Hill buckwheat

Eriogonum argillosum

clay-loving buckwheat

Eriogonum breedlovei var. breedlovei

Breedlove's buckwheat

Eriogonum contiguum

Reveal's buckwheat

Eriogonum diclinum

Jaynes Canyon buckwheat

Eriogonum eastwoodianum

Eastwood's buckwheat

Eriogonum eremicola

Wildrose Canyon buckwheat

Eriogonum ericifolium var. thornei

Thorne's buckwheat

Eriogonum foliosum

leafy buckwheat

Eriogonum giganteum var. compactum

Santa Barbara Island buckwheat

Eriogonum giganteum var. formosum

San Clemente Island buckwheat

Eriogonum gossypinum

cottony buckwheat

Eriogonum grande var. grande

island buckwheat

Eriogonum grande var. rubescens

red-flowered buckwheat

Eriogonum grande var. timorum

San Nicolas Island buckwheat

Eriogonum heermannii var. floccosum

Clark Mountain buckwheat

Eriogonum heermannii var. occidentale

western Heermann's buckwheat

Eriogonum hoffmannii var. hoffmannii

Hoffmann's buckwheat

Eriogonum hoffmannii var. robustius

robust Hoffmann's buckwheat

Eriogonum kennedyi var. alpigenum

southern alpine buckwheat

Eriogonum kennedyi var. austromontanum

southern mountain buckwheat

Eriogonum microthecum var. corymbosoides

San Bernardino buckwheat

Eriogonum microthecum var. johnstonii

Johnston's buckwheat

Eriogonum microthecum var. lapidicola

Inyo Mountains buckwheat

Eriogonum microthecum var. panamintense

Panamint Mountains buckwheat

Eriogonum nortonii

Pinnacles buckwheat

Eriogonum nudum var. decurrens

Ben Lomond buckwheat

Eriogonum nudum var. indictum

protruding buckwheat

Eriogonum nudum var. paralinum

Del Norte buckwheat

Eriogonum nudum var. regirivum

Kings River buckwheat

Eriogonum nutans

nodding buckwheat

Eriogonum ochrocephalum var. alexanderae

Alexander's buckwheat

Eriogonum ovalifolium var. eximium

brown-margined buckwheat

Eriogonum pendulum

Waldo buckwheat

Eriogonum prattenianum var. avium

Kettle Dome buckwheat

Eriogonum strictum var. greenei

Greene's buckwheat

Eriogonum temblorense

Temblor buckwheat

Eriogonum tripodum

tripod buckwheat

Eriogonum truncatum

Mt. Diablo buckwheat

Eriogonum umbellatum var. glaberrimum

green buckwheat

Eriogonum umbellatum var. juniporinum

juniper buckwheat

Eriogonum umbellatum var. torreyanum

Donner Pass buckwheat

Eriogonum vestitum

Idria buckwheat

Erioneuron pilosum

hairy erioneuron

Eriophyllum jepsonii

Jepson's woolly sunflower

Eriophyllum lanatum var. obovatum

southern Sierra woolly sunflower

Eriophyllum latilobum

San Mateo woolly sunflower

Eryngium aristulatum var. hooveri

Hoover's button-celery

Eryngium pinnatisectum

Tuolumne button-celery

Eryngium racemosum

Delta button-celery

Erysimum capitatum ssp. lompocense

San Luis Obispo wallflower

Erysimum insulare ssp. insulare

island wallflower

Erysimum insulare ssp. suffrutescens

suffrutescent wallflower

Erysimum menziesii ssp. yadonii

Yadon's wallflower

Erythronium citrinum var. citrinum

lemon-colored fawn lily

Erythronium citrinum var. roderickii

Scott Mountains fawn lily

Erythronium helenae

St. Helena fawn lily

Erythronium hendersonii

Henderson's fawn lily

Erythronium klamathense

Klamath fawn lily

Erythronium pluriflorum

Shuteye Peak fawn lily

Eschscholzia hypecoides

San Benito poppy

Eschscholzia lemmonii ssp. kernensis

Tejon poppy

Eschscholzia minutiflora ssp. twisselmannii

Red Rock poppy

Eschscholzia ramosa

island poppy

Escobaria vivipara var. alversonii

foxtail cactus

Escobaria vivipara var. rosea

viviparous foxtail cactus

Eucnide rupestris

rock nettle

Euphorbia exstipulata var. exstipulata

Clark Mountain spurge

Fimbristylis thermalis

hot springs fimbristylis

Frankenia palmeri

Palmer's frankenia

Fremontodendron mexicanum

Mexican flannelbush

Fritillaria biflora var. ineziana

Hillsborough chocolate lily

Fritillaria lanceolata var. tristulis

Marin checker lily

Fritillaria viridea

San Benito fritillary

Galium andrewsii ssp. gatense

serpentine bedstraw

Galium angustifolium ssp. gabrielense

San Antonio Canyon bedstraw

Galium angustifolium ssp. gracillimum

slender bedstraw

Galium angustifolium ssp. jacinticum

San Jacinto Mountains bedstraw

Galium angustifolium ssp. onycense

Onyx Peak bedstraw

Galium buxifolium

box bedstraw

Galium californicum ssp. miguelense

San Miguel Island bedstraw

Galium californicum ssp. primum

California bedstraw

Galium catalinense ssp. acrispum

San Clemente Island bedstraw

Galium catalinense ssp. catalinense

Santa Catalina Island bedstraw

Galium clementis

Santa Lucia bedstraw

Galium cliftonsmithii

Santa Barbara bedstraw

Galium hilendiae ssp. carneum

Panamint Mountains bedstraw

Galium hilendiae ssp. kingstonense

Kingston Mountains bedstraw

Galium hypotrichium ssp. tomentellum

Telescope Peak bedstraw

Galium jepsonii

Jepson's bedstraw

Galium johnstonii

Johnston's bedstraw

Galium munzii

Munz's bedstraw

Galium nuttallii ssp. insulare

Nuttall's island bedstraw

Galium oreganum

Oregon bedstraw

Galium serpenticum ssp. warnerense

Warner Mountains bedstraw

Galium wrightii

Wright's bedstraw

Gentiana affinis var. parvidentata

small-toothed prairie gentian

Gentiana plurisetosa

Klamath gentian

Gentiana prostrata

pygmy gentian

Gentiana setigera

Mendocino gentian

Geraea viscida

sticky geraea

Geum aleppicum

Aleppo avens

Gilia caruifolia

caraway-leaved gilia

Gilia latiflora ssp. cuyamensis

Cuyama gilia

Gilia nevinii

Nevin's gilia

Gilia tenuiflora ssp. hoffmannii

Hoffmann's slender-flowered gilia

Glossopetalon pungens

pungent glossopetalon

Glyceria grandis

American manna grass

Goodmania luteola

golden goodmania

Grindelia hirsutula var. hallii

San Diego gumplant

Grindelia hirsutula var. maritima

San Francisco gumplant

Hackelia amethystina

amethyst stickseed

Hackelia brevicula

Poison Canyon stickseed

Hackelia cusickii

Cusick's stickseed

Halimolobos virgata

virgate halimolobos

Hazardia cana

San Clemente Island hazardia

Hazardia orcuttii

Orcutt's hazardia

Helianthemum greenei

island rush-rose

Hemizonia clementina

island tarplant

Hemizonia congesta ssp. calyculata

Mendocino tarplant

Hemizonia congesta ssp. leucocephala

Hayfield tarplant

Hemizonia congesta ssp. tracyi

Tracy's tarplant

Hemizonia conjugens

Otay tarplant

Hemizonia floribunda

Tecate tarplant

Hemizonia halliana

Hall's tarplant

Hemizonia increscens ssp. villosa

Gaviota tarplant

Hemizonia mohavensis

Mojave tarplant

Hemizonia parryi ssp. congdonii

Congdon's tarplant

Hemizonia pungens ssp. laevis

smooth tarplant

Herissantia crispa

curly herissantia

Hesperevax sparsiflora var. brevifolia

short-leaved evax

Hesperolinon breweri

Brewer's western flax

Hesperolinon serpentinum

Napa western flax

Heuchera abramsii

Abrams's alumroot

Heuchera brevistaminea

Laguna Mountains alumroot

Heuchera chlorantha

green-flowered alumroot

Heuchera elegans

urn-flowered alumroot

Heuchera hirsutissima

shaggy-haired alumroot

Heuchera maxima

island alumroot

Heuchera parishii

Parish's alumroot

Heuchera rubescens var. versicolor

San Diego County alumroot

Hierochloe odorata

vanilla-grass

Holocarpha virgata ssp. elongata

graceful tarplant

Hordeum intercedens

vernal barley

Horkelia congesta ssp. nemorosa

Josephine horkelia

Horkelia cuneata ssp. sericea

Kellogg's horkelia

Horkelia hendersonii

Henderson's horkelia

Horkelia hispidula

White Mountains horkelia

Horkelia sericata

Howell's horkelia

Horkelia tenuiloba

thin-lobed horkelia

Horkelia tularensis

Kern Plateau horkelia

Horkelia wilderae

Barton Flats horkelia

Horkelia yadonii

Santa Lucia horkelia

Hulsea brevifolia

short-leaved hulsea

Hulsea mexicana

Mexican hulsea

Hulsea vestita ssp. callicarpha

beautiful hulsea

Hulsea vestita ssp. gabrielensis

San Gabriel Mountains sunflower

Hulsea vestita ssp. parryi

Parry's sunflower

Iliamna bakeri

Baker's globe mallow

Iliamna latibracteata

California globe mallow

Ipomopsis effusa

Baja California ipomopsis

Iris bracteata

Siskiyou iris

Iris hartwegii ssp. columbiana

Tuolumne iris

Iris innominata

Del Norte County iris

Iris tenax ssp. klamathensis

Orleans iris

Isocoma arguta

Carquinez goldenbush

Isocoma menziesii var. decumbens

decumbent goldenbush

Isocoma menziesii var. diabolica

Satan's goldenbush

Iva hayesiana

San Diego marsh-elder

Ivesia aperta var. aperta

Sierra Valley ivesia

Ivesia aperta var. canina

Dog Valley ivesia

Ivesia arizonica var. arizonica

yellow ivesia

Ivesia baileyi var. baileyi

Bailey's ivesia

Ivesia baileyi var. beneolens

Owyhee ivesia

Ivesia callida

Tahquitz ivesia

Ivesia campestris

field ivesia

Ivesia jaegeri

Jaeger's ivesia

Ivesia kingii var. kingii

alkali ivesia

Ivesia longibracteata

Castle Crags ivesia

Ivesia patellifera

Kingston Mountains ivesia

Ivesia sericoleuca

Plumas ivesia

Jamesia americana var. rosea

rosy-petalled cliffbush

Jepsonia heterandra

foothill jepsonia

Juglans californica var. californica

Southern California black walnut

Juglans californica var. hindsii

Northern California black walnut

Juncus acutus ssp. leopoldii

southwestern spiny rush

Juncus dudleyi

Dudley's rush

Juncus duranii

Duran's rush

Juncus hemiendytus var. abjectus

Center Basin rush

Juncus leiospermus var. leiospermus

Red Bluff dwarf rush

Juncus marginatus var. marginatus

red-anthered rush

Juncus nodosus

knotted rush

Juncus regelii

Regel's rush

Juncus supiniformis

hair-leaved rush

Kobresia bellardii

seep kobresia

Koeberlinia spinosa ssp. tenuispina

crown-of-thorns

Lasthenia glabrata ssp. coulteri

Coulter's goldfields

Lasthenia leptalea

Salinas Valley goldfields

Lathyrus delnorticus

Del Norte pea

Lathyrus glandulosus

sticky pea

Lathyrus palustris

marsh pea

Lathyrus sulphureus var. argillaceus

dubious pea

Lavatera assurgentiflora ssp. assurgentiflora

island mallow

Layia heterotricha

pale-yellow layia

Layia leucopappa

Comanche Point layia

Layia munzii

Munz's tidy-tips

Layia septentrionalis

Colusa layia

Lepechinia cardiophylla

heart-leaved pitcher sage

Lepechinia fragrans

fragrant pitcher sage

Lepechinia ganderi

Gander's pitcher sage

Lepidium flavum var. felipense

Borrego Valley pepper-grass

Lepidium jaredii ssp. album

Panoche pepper-grass

Lepidium latipes var. heckardii

Heckard's pepper-grass

Lepidium virginicum var. robinsonii

Robinson's pepper-grass

Leptodactylon californicum ssp. tomentosum

fuzzy prickly phlox

Leptodactylon jaegeri

San Jacinto prickly phlox

Lessingia arachnoidea

Crystal Springs lessingia

Lessingia glandulifera var. tomentosa

Warner Springs lessingia

Lessingia hololeuca

woolly-headed lessingia

Lessingia micradenia var. glabrata

smooth lessingia

Lessingia micradenia var. micradenia

Tamalpais lessingia

Lessingia occidentalis

western lessingia

Lessingia tenuis

spring lessingia

Lewisia cotyledon var. heckneri

Heckner's lewisia

Lilium parryi

lemon lily

Limnanthes floccosa ssp. bellingeriana

Bellinger's meadowfoam

Limnanthes vinculans

Sebastopol meadowfoam

Limosella subulata

delta mudwort

Linanthus concinnus

San Gabriel linanthus

Linanthus floribundus ssp. hallii

Santa Rosa Mountains linanthus

Linanthus grandiflorus

large-flowered linanthus

Linanthus nuttallii ssp. howellii

Mt. Tedoc linanthus

Linanthus oblanceolatus

Sierra Nevada linanthus

Linanthus pygmaeus ssp. pygmaeus

pygmy linanthus

Linanthus serrulatus

Madera linanthus

Lithophragma maximum

San Clemente Island woodland star

Lomatium engelmannii

Engelmann's lomatium

Lomatium hendersonii

Henderson's lomatium

Lomatium insulare

San Nicolas Island lomatium

Lomatium martindalei

Coast Range lomatium

Lomatium shevockii

Owens Peak lomatium

Lomatium tracyi

Tracy's lomatium

Lotus argophyllus var. adsurgens

San Clemente Island bird's-foot trefoil

Lotus argophyllus var. niveus

Santa Cruz Island bird's-foot trefoil

Lotus argyraeus var. multicaulis

scrub lotus

Lotus argyraeus var. notitius

Providence Mountains lotus

Lotus crassifolius var. otayensis

Otay Mountain lotus

Lotus dendroideus var. dendroideus

island broom

Lotus dendroideus var. veatchii

San Miguel Island deerweed

Lotus haydonii

pygmy lotus

Lotus nuttallianus

Nuttall's lotus

Lotus oblongifolius var. cupreus

copper-flowered bird's-foot trefoil

Lotus yollabolliensis

Yolla Bolly Mtns. bird's-foot trefoil

Lupinus albifrons var. abramsii

Abrams's lupine

Lupinus cervinus

Santa Lucia lupine

Lupinus croceus var. pilosellus

saffron-flowered lupine

Lupinus elatus

silky lupine

Lupinus excubitus var. johnstonii

interior bush lupine

Lupinus excubitus var. medius

Mountain Springs bush lupine

Lupinus eximius

San Mateo tree lupine

Lupinus gracilentus

slender lupine

Lupinus guadalupensis

Guadalupe Island lupine

Lupinus lapidicola

Mt. Eddy lupine

Lupinus magnificus var. hesperius

McGee Meadows lupine

Lupinus peirsonii

Peirson's lupine

Lycium parishii

Parish's desert-thorn

Lycium verrucosum

San Nicolas Island desert-thorn

Lycopodium clavatum

running-pine

Lycopus uniflorus

northern bugleweed

Lycurus phleoides var. phleoides

wolftail

Lyonothamnus floribundus ssp. floribundus

Santa Catalina Island ironwood

Lyrocarpa coulteri var. palmeri

Coulter's lyrepod