| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Abronia latifolia | (historical-1894) | CNPS-EB: A1x | yellow sand-verbena |
| Abronia umbellata var. umbellata | (historical-1937) | CNPS-EB: A1x | beach sand-verbena |
| Acaena californica | (formerly A. pinnatifida var. californica) | CNPS-EB: C | California acaena |
| Acanthomintha lanceolata | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4 CNDDB Rank: S4 | Santa Clara thornmint | |
| Acmispon denticulatus | (historical-1945) | CNPS-EB: A1x | meadow trefoil |
| Acmispon junceus var. biolettii | (historical-1945) | CNPS-EB: A1x | rush lotus |
| Acmispon junceus var. junceus | CNPS-EB: A1 | ||
| Acmispon strigosus | CNPS-EB: B | strigose trefoil | |
| Adiantum aleuticum | (A. jordanii is more common) | CNPS-EB: A1 | five-finger fern |
| Agoseris heterophylla var. cryptopleura | CNPS-EB: B | ||
| Agoseris heterophylla var. heterophylla | CNPS-EB: C | ||
| Agoseris heterophylla var. unknown | Agoseris heterophylla split into 2 vars. in 2011 Jepson Manual, need field work to resolve vars. | CNPS-EB: B? | annual agoseris |
| Agoseris retrorsa | CNPS-EB: A2 | spear-leaved agoseris | |
| Agrostis hallii | CNPS-EB: A2 | Hall's bent grass | |
| Alisma triviale | (formerly A. plantago-aquatica | CNPS-EB: C | water plantain |
| Allenrolfea occidentalis | CNPS-EB: C | iodine bush | |
| Allium acuminatum | CNPS-EB: A1 | Hooker's onion | |
| Allium amplectens | CNPS-EB: A2 | narrow-leaved onion | |
| Allium bolanderi var. bolanderi | CNPS-EB: A1 | Bolander's onion | |
| Allium crispum | CNPS-EB: A1 | crinkled onion | |
| Allium falcifolium | CNPS-EB: A2 | sickle-leaved onion | |
| Allium peninsulare var. peninsulare | (historical-1954) | CNPS-EB: A1x | peninsular onion |
| Allium sharsmithiae | CNPS-EB: *A2 State CNPS: 1B.3 Global Rank: G2 CNDDB Rank: S2 | Sharsmith's onion | |
| Allium unifolium | one-leaved onion | ||
| Allophyllum divaricatum | CNPS-EB: C | straggling gilia | |
| Allophyllum gilioides subsp. gilioides | CNPS-EB: A2 | straggling gilia | |
| Allophyllum gilioides subsp. violaceum | (ssp. gilioides is more common | CNPS-EB: B | straggling gilia |
| Alnus rubra | (A. rhombifolia is more common | CNPS-EB: A2 | red alder |
| Alopecurus saccatus | CNPS-EB: B | Howell's meadow foxtail | |
| Amaranthus blitoides | CNPS-EB: C | procumbent pigweed, prostrate amaranth | |
| Amaranthus californicus | CNPS-EB: B | Californian amaranth | |
| Amaranthus palmeri | CNPS-EB: A1x | Palmer's amaranth | |
| Amaranthus powellii | CNPS-EB: A1 | Powell's amaranth | |
| Ambrosia chamissonis | CNPS-EB: C | beach bur-sage, beach-bur | |
| Amelanchier utahensis | CNPS-EB: C | Utah service-berry | |
| Ammannia coccinea | CNPS-EB: A1 | long-leaved ammannia | |
| Amsinckia douglasiana | (historical-1938) | CNPS-EB: *A1x State CNPS: 4.2 Global Rank: G4 CNDDB Rank: S4 | Douglas' fiddleneck |
| Amsinckia eastwoodiae | CNPS-EB: A2 | Eastwood's fiddleneck | |
| Amsinckia grandiflora | CNPS-EB: *A1 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 FESA Status: FE CESA Status: CE | large-flowered fiddleneck | |
| Amsinckia lunaris | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G3 CNDDB Rank: S3 | bent-flowered fiddleneck | |
| Amsinckia lycopsoides | CNPS-EB: C | bugloss-flowered fiddleneck, bugloss fiddleneck | |
| Amsinckia tessellata var. gloriosa | CNPS-EB: A1 | carrizo fiddleneck, tessellate fiddleneck | |
| Amsinckia tessellata var. tessellata | CNPS-EB: A1 | desert fiddleneck, devil's lettuce | |
| Amsinckia vernicosa | CNPS-EB: A1 | waxy fiddleneck, forked fiddleneck | |
| Ancistrocarphus filagineus | CNPS-EB: C | woolly fishhooks | |
| Androsace elongata subsp. acuta | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G5?T3T4 CNDDB Rank: S3S4 | California androsace | |
| Anemopsis californica | CNPS-EB: B | yerba mansa, lizard tail | |
| Anisocarpus madioides | (formerly Madia m.) | CNPS-EB: B | woodland tarweed, woodland madia |
| Anthoxanthum occidentale | (historical-198? but not seen | CNPS-EB: A1x | California sweet grass, vanilla grass |
| Antirrhinum kelloggii | CNPS-EB: A1 | lax snapdragon | |
| Antirrhinum thompsonii | (formerly A. multiflorum) | CNPS-EB: A1 | withered snapdragon |
| Aphyllon californicum subsp. jepsonii | CNPS-EB: A1 | Jepson broom-rape | |
| Aphyllon epigalium subsp. epigalium | CNPS-EB: A2 | ||
| Aphyllon pinorum | CNPS-EB: A1 | pine broom-rape | |
| Aphyllon purpureum | CNPS-EB: C | naked broomrape | |
| Aphyllon tuberosum | CNPS-EB: C | bulbous broom-rape | |
| Aphyllon vallicola | CNPS-EB: B | California broom-rape | |
| Apiastrum angustifolium | CNPS-EB: C | wild celery | |
| Apocynum androsaemifolium | CNPS-EB: A2 | bitter dogbane, dogbane | |
| Apocynum cannabinum | CNPS-EB: B | dogbane, Indian-hemp | |
| Aquilegia eximia | (A. formosa is more common) | CNPS-EB: A2 | Van Houtte's columbine |
| Aquilegia formosa | red columbine | ||
| Arabis blepharophylla | CNPS-EB: *A1x State CNPS: 4.3 Global Rank: G4 CNDDB Rank: S4 | coast rockcress | |
| Aralia californica | CNPS-EB: C | elk clover | |
| Arbutus menziesii | CNPS-EB: B | Pacific madrone | |
| Arctostaphylos auriculata | CNPS-EB: *A2 State CNPS: 1B.3 Global Rank: G2 CNDDB Rank: S2 | Mount Diablo manzanita | |
| Arctostaphylos crustacea subsp. crustacea | CNPS-EB: C | brittleleaf manzanita | |
| Arctostaphylos crustacea subsp. rosei | CNPS-EB: A1 | Rose's manzanita | |
| Arctostaphylos glandulosa subsp. cushingiana | CNPS-EB: A1x | CUSHING MANZANITA | |
| Arctostaphylos glandulosa subsp. glandulosa | CNPS-EB: B | Eastwood manzanita | |
| Arctostaphylos glandulosa subsp. mollis | CNPS-EB: A1x | ||
| Arctostaphylos glauca | CNPS-EB: C | big-berried manzanita | |
| Arctostaphylos manzanita subsp. laevigata | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G5T2 CNDDB Rank: S2 | Contra Costa manzanita | |
| Arctostaphylos manzanita subsp. manzanita | CNPS-EB: A2 | common manzanita | |
| Arctostaphylos pallida | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 FESA Status: FT CESA Status: CE | pallid manzanita | |
| Argemone munita | CNPS-EB: A1 | chicalote, prickly poppy | |
| Aristida oligantha | Questionable ID at Los Vaqueros. Needs research | CNPS-EB: A1? | oldfield three-awn |
| Arnica discoidea | CNPS-EB: B | rayless arnica | |
| Artemisia dracunculus | CNPS-EB: A2 | tarragon | |
| Artemisia pycnocephala | (historical-1936) | CNPS-EB: A1x | coastal sagewort |
| Arthrocnemum subterminale | CNPS-EB: A2 | Parish's glasswort | |
| Asarum caudatum | CNPS-EB: B | wild-ginger | |
| Asclepias californica | California milkweed | ||
| Asclepias cordifolia | (A. californica is more common | CNPS-EB: A1 | purple milkweed |
| Asclepias speciosa | (A. californica is more common | CNPS-EB: B | showy milkweed, milkweed |
| Aspidotis californica | CNPS-EB: A2 | California lace fern | |
| Aspidotis carlotta-halliae | CNPS-EB: *A1x State CNPS: 4.2 Global Rank: G3 CNDDB Rank: S3 | Carlotta Hall's lace fern | |
| Aspidotis densa | CNPS-EB: A1x | dense lace fern, Indian's dream | |
| Astragalus asymmetricus | CNPS-EB: C | San Joaquin locoweeed | |
| Astragalus didymocarpus var. didymocarpus | (A. gambelianus is more common | CNPS-EB: A1 | two-seeded milkvetch |
| Astragalus nuttallii var. nuttallii | (historical-1866) | CNPS-EB: *A1x State CNPS: 4.2 Global Rank: G4T4 CNDDB Rank: S4 | ocean bluff milkvetch, Nuttall's milk-vetch |
| Astragalus nuttallii var. virgatus | (historical-1881) | CNPS-EB: A1x | Nuttall's milk-vetch |
| Astragalus tener var. tener | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2T1 CNDDB Rank: S1 | alkali milkvetch | |
| Athysanus unilateralis | (formerly Heterodraba unilateralis) | CNPS-EB: A1 | heterodraba |
| Atriplex argentea var. expansa | CNPS-EB: B | silverscale | |
| Atriplex coronata var. coronata | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4T3 CNDDB Rank: S3 | crownscale | |
| Atriplex depressa | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | brittlescale | |
| Atriplex dioica | (formerly A. subspicata) | CNPS-EB: A1x | thickleaf orach, saltbush |
| Atriplex fruticulosa | CNPS-EB: B | ballscale, little oak orach, ball saltbush | |
| Atriplex gmelinii var. gmelinii | (historical-1897) | CNPS-EB: A1x | Gmelin's saltbush, spear saltbush |
| Atriplex leucophylla | CNPS-EB: B | beach saltbush | |
| Atriplex minuscula | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G2 CNDDB Rank: S2 | LESSER SALTSCALE | |
| Atriplex serenana var. serenana | CNPS-EB: A1 | bractscale | |
| Balsamorhiza deltoidea | CNPS-EB: B | deltoid balsamroot | |
| Balsamorhiza macrolepis | CNPS-EB: *A1 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | big-scale balsamroot | |
| Berberis aquifolium var. dictyota | CNPS-EB: A1 | Jepson's mahonia | |
| Berberis nervosa | (B. pinnata is more common) | CNPS-EB: A1 | Oregon grape |
| Berula erecta | CNPS-EB: C | cutleaf water-parsnip | |
| Bidens frondosa | CNPS-EB: B | sticktight | |
| Bidens laevis | CNPS-EB: A2 | bur-marigold | |
| Blennosperma nanum var. nanum | CNPS-EB: C | blennosperma | |
| Blepharizonia laxa | (formerly B. plumosa ssp. visc | CNPS-EB: B | big tarplant |
| Blepharizonia plumosa | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G1G2 CNDDB Rank: S1S2 | big tarplant | |
| Boechera breweri subsp. breweri | (formerly Arabis breweri) | CNPS-EB: B | Brewer's rockcress |
| Bolboschoenus fluviatilis | (formerly Scirpus f.) | CNPS-EB: A1x | river bulrush |
| Bolboschoenus maritimus subsp. paludosus | (formerly Scirpus m.) | CNPS-EB: C | bulrush |
| Brickellia californica | CNPS-EB: C | California brickellbush, California brickellia | |
| Brodiaea terrestris subsp. terrestris | CNPS-EB: B | dwarf brodiaea | |
| Bromus sitchensis var. maritimus | (formerly B. maritimus) | CNPS-EB: A1 | maritime brome, seaside brome grass |
| Calamagrostis koelerioides | 2 questionable ID sites. Needs field research | CNPS-EB: A1? | tufted pine grass |
| Calamagrostis nutkaensis | (historical-18??) | CNPS-EB: A1x | Pacific reed grass |
| Calamagrostis rubescens | CNPS-EB: B | pine reed grass, pine grass | |
| Calandrinia breweri | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4 CNDDB Rank: S4 | Brewer's calandrinia | |
| California macrophylla | (formerly Erodium macrophyllum | CNPS-EB: B | round-leaved filaree |
| Calochortus clavatus var. pallidus | CNPS-EB: A1 | club-haired mariposa-lily | |
| Calochortus invenustus | CNPS-EB: A1x | plain mariposa-lily | |
| Calochortus pulchellus | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Mount Diablo fairy-lantern | |
| Calochortus splendens | CNPS-EB: A2 | splendid mariposa-lily | |
| Calochortus umbellatus | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G3? CNDDB Rank: S3? | Oakland star-tulip | |
| Calycadenia multiglandulosa | CNPS-EB: A2 | sticky calycadenia | |
| Calystegia malacophylla subsp. pedicellata | CNPS-EB: A2 | woolly morning-glory | |
| Calystegia purpurata subsp. saxicola | (historical-1893) (ssp. purpur | CNPS-EB: *A1x State CNPS: 1B.2 Global Rank: G4T2T3 CNDDB Rank: S2S3 | coastal bluff morning-glory |
| Calystegia sepium subsp. limnophila | CNPS-EB: B | hedge bindweed | |
| Calystegia soldanella | (historical-1893) | CNPS-EB: A1x | beach morning-glory |
| Camissonia campestris subsp. campestris | (historical-1940) | CNPS-EB: A1x | Mojave suncup |
| Camissonia contorta | CNPS-EB: C | contorted primrose | |
| Camissonia strigulosa | CNPS-EB: A1 | contorted primrose | |
| Camissoniopsis cheiranthifolia subsp. cheiranthifolia | CNPS-EB: A1 | dune suncup | |
| Camissoniopsis hirtella | CNPS-EB: B | small primrose | |
| Camissoniopsis intermedia | CNPS-EB: C | small primrose | |
| Camissoniopsis micrantha | CNPS-EB: C | small primrose | |
| Campanula exigua | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | chaparral harebell | |
| Campanula griffinii | CNPS-EB: A1 | Griffin's campanula | |
| Campanula sharsmithiae | CNPS-EB: *A1x State CNPS: 1B.2 Global Rank: G1G2 CNDDB Rank: S1S2 | SHARSMITH'S HAREBELL | |
| Carex aquatilis var. dives | CNPS-EB: A1 | Sitka sedge | |
| Carex barbarae | CNPS-EB: C | whiteroot sedge, Santa Barbara sedge, St. Barbara's sedge | |
| Carex brevicaulis | CNPS-EB: A2 | short-stemmed sedge | |
| Carex comosa | CNPS-EB: *A1x State CNPS: 2B.1 Global Rank: G5 CNDDB Rank: S2 | bristly sedge | |
| Carex densa | CNPS-EB: B | dense sedge | |
| Carex globosa | CNPS-EB: B | round-fruited sedge | |
| Carex gracilior | CNPS-EB: A1 | slender sedge | |
| Carex harfordii | CNPS-EB: B | Harford's sedge, Monterey sedge | |
| Carex laeviculmis | CNPS-EB: A1 | smooth-stemmed sedge | |
| Carex lenticularis var. lipocarpa | CNPS-EB: A1 | few-ribbed sedge | |
| Carex leporina | (formerly Carex ovalis) | CNPS-EB: A1 | hare sedge, oval sedge, mountain hare sedge |
| Carex leptopoda | (formerly Carex deweyana subsp leptopoda | CNPS-EB: A2 | slender-footed sedge, short-scaled sedge |
| Carex multicostata | CNPS-EB: A1 | many-ribbed sedge | |
| Carex nebrascensis | CNPS-EB: B | Nebraska sedge | |
| Carex nudata | CNPS-EB: B | torrent sedge | |
| Carex obnupta | CNPS-EB: B | slough sedge | |
| Carex pellita | (formerly C. lanuginosa) | CNPS-EB: A1 | woolly sedge |
| Carex praegracilis | CNPS-EB: C | black creeper sedge, freeway sedge, deer-bed sedge | |
| Carex senta | CNPS-EB: A1 | western rough sedge, rough sedge | |
| Carex serratodens | CNPS-EB: C | saw-toothed sedge, bifid sedge | |
| Carex subbracteata | CNPS-EB: B | small-bracted sedge | |
| Carex unilateralis | CNPS-EB: A1 | one-sided sedge | |
| Castilleja ambigua subsp. ambigua | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4T4 CNDDB Rank: S3S4 | Johnny-nip | |
| Castilleja applegatei subsp. martinii | CNPS-EB: A2 | wavy-leaved indian paintbrush | |
| Castilleja exserta subsp. latifolia | CNPS-EB: A1 | owl's-clover | |
| Castilleja rubicundula subsp. lithospermoides | CNPS-EB: B | cream sacs | |
| Castilleja subinclusa subsp. franciscana | CNPS-EB: A1 | Franciscan indian paintbrush | |
| Castilleja subinclusa subsp. subinclusa | CNPS-EB: A1 | long-leaved indian paintbrush | |
| Castilleja wightii | CNPS-EB: B | Wight's indian paintbrush | |
| Caulanthus flavescens | CNPS-EB: A2 | yellow-flowered thelypodium | |
| Caulanthus lemmonii | (formerly C. coulteri var. l.) | CNPS-EB: *A1x State CNPS: 1B.2 Global Rank: G3 CNDDB Rank: S3 | Lemmon's jewelflower |
| Ceanothus leucodermis | CNPS-EB: A2 | chaparral whitethorn | |
| Ceanothus thyrsiflorus var. thyrsiflorus | CNPS-EB: B | blue blossom, California lilac | |
| Centromadia parryi subsp. congdonii | (formerly Hemizonia p. ssp. c. | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G3T2 CNDDB Rank: S2 | Congdon's tarplant |
| Cephalanthus occidentalis | CNPS-EB: A2 | button bush | |
| Cercis occidentalis | CNPS-EB: A1x | western redbud | |
| Chaenactis glabriuscula var. glabriuscula | CNPS-EB: A1 | yellow pincushion | |
| Chaenactis glabriuscula var. heterocarpha | CNPS-EB: A1 | inner coast range pincushion, yellow pincushion | |
| Chaenactis glabriuscula var. megacephala | CNPS-EB: A1 | yellow pincushion | |
| Chenopodium berlandieri var. sinuatum | CNPS-EB: A1 | ||
| Chenopodium berlandieri var. unknown | Split into 2 varieties. Sites need to be surveyed to determine vars.. | CNPS-EB: A2? | pitseed goosefoot |
| Chenopodium berlandieri var. zschackei | CNPS-EB: A1? | ||
| Chenopodium pratericola | CNPS-EB: A1 | ||
| Chenopodium rubrum | CNPS-EB: A1 | red pigweed, red goosefoot | |
| Chenopodium rubrum var. humile | CNPS-EB: A1? | ||
| Chenopodium rubrum var. rubrum | CNPS-EB: A1? | ||
| Chlorogalum pomeridianum var. minus | CNPS-EB: *A1 State CNPS: 1B.2 Global Rank: G5T3 CNDDB Rank: S3 | DWARF SOAPROOT | |
| Chloropyron maritimum subsp. palustre | (historical-1917) | CNPS-EB: *A1x State CNPS: 1B.2 Global Rank: G4?T2 CNDDB Rank: S2 | Point Reyes salty bird's-beak |
| Chloropyron molle subsp. hispidum | CNPS-EB: *A1 State CNPS: 1B.1 Global Rank: G2T1 CNDDB Rank: S1 | hispid salty bird's-beak, hispid bird's-beak | |
| Chloropyron molle subsp. molle | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2T1 CNDDB Rank: S1 FESA Status: FE CESA Status: CR | soft salty bird's-beak, soft bird's-beak | |
| Chloropyron palmatum | CNPS-EB: *A1 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 FESA Status: FE CESA Status: CE | palmate salty bird's-beak, palmate-bracted bird's-beak | |
| Chorizanthe cuspidata var. cuspidata | (historical-1881) | CNPS-EB: *A1x State CNPS: 1B.2 Global Rank: G2T1 CNDDB Rank: S1 | San Francisco Bay spineflower |
| Chorizanthe polygonoides var. polygonoides | CNPS-EB: A1 | knotweed spineflower | |
| Chorizanthe robusta var. robusta | (historical-1913) | CNPS-EB: *A1x State CNPS: 1B.1 Global Rank: G2T1 CNDDB Rank: S1 FESA Status: FE | robust spineflower |
| Chorizanthe uniaristata | (historical-1884) | CNPS-EB: A1x | one-awn spineflower |
| Chrysolepis chrysophylla var. minor | CNPS-EB: A2 | golden chinquapin | |
| Cicendia quadrangularis | CNPS-EB: A2 | timwort | |
| Cicuta douglasii | CNPS-EB: A2 | water-hemlock | |
| Cicuta maculata var. bolanderi | CNPS-EB: *A1 State CNPS: 2B.1 Global Rank: G5T4T5 CNDDB Rank: S2? | Bolander's water-hemlock, water hemlock | |
| Cirsium andrewsii | CNPS-EB: *A1 State CNPS: 1B.2 Global Rank: G3 CNDDB Rank: S3 | Franciscan thistle | |
| Cirsium brevistylum | CNPS-EB: B | indian thistle | |
| Cirsium cymosum var. cymosum | CNPS-EB: C | peregrine thistle | |
| Cirsium douglasii var. douglasii | CNPS-EB: A1 | swamp thistle | |
| Cirsium fontinale var. campylon | CNPS-EB: *A1 State CNPS: 1B.2 Global Rank: G2T2 CNDDB Rank: S2 | Mount Hamilton fountain thistle | |
| Cirsium occidentale var. californicum | (var. venustum is more common) | CNPS-EB: A2 | California thistle |
| Cirsium occidentale var. coulteri | CNPS-EB: A1x | COULTER'S THISTLE | |
| Cirsium occidentale var. occidentale | CNPS-EB: A1x | COBWEBBY THISTLE | |
| Cirsium quercetorum | CNPS-EB: A2 | brownie thistle | |
| Cirsium remotifolium var. odontolepis | CNPS-EB: A1 | remote-leaved thistle | |
| Clarkia biloba subsp. biloba | CNPS-EB: A2 | lobed godetia | |
| Clarkia breweri | CNPS-EB: *A1 State CNPS: 4.2 Global Rank: G4 CNDDB Rank: S4 | Brewer's clarkia | |
| Clarkia concinna subsp. automixa | (ssp. concinna is more common) | CNPS-EB: *A2 State CNPS: 4.3 Global Rank: G5?T3 CNDDB Rank: S3 | Santa Clara red ribbons |
| Clarkia concinna subsp. concinna | CNPS-EB: C | large godetia | |
| Clarkia epilobioides | CNPS-EB: A1 | ||
| Clarkia franciscana | CNPS-EB: *A1 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 FESA Status: FE CESA Status: CE | Presidio clarkia | |
| Clarkia gracilis subsp. gracilis | CNPS-EB: C | summer's darling | |
| Clarkia modesta | CNPS-EB: A2 | modest clarkia | |
| Clarkia purpurea subsp. purpurea | (ssp. quadrivulnera is more co | CNPS-EB: A2 | purple clarkia |
| Clarkia purpurea subsp. unknown | CNPS-EB: A1? | clarkia | |
| Clarkia purpurea subsp. viminea | (ssp. quadrivulnera more common | CNPS-EB: A1 | large godetia |
| Clarkia rhomboidea | CNPS-EB: A1 | ||
| Clarkia tembloriensis subsp. tembloriensis | CNPS-EB: A1 | temblor clarkia | |
| Claytonia exigua subsp. exigua | CNPS-EB: C | common montia | |
| Claytonia exigua subsp. glauca | (ssp. exigua is more common) | CNPS-EB: A1x | claytonia |
| Claytonia gypsophiloides | CNPS-EB: B | coast range montia | |
| Claytonia rubra subsp. depressa | CNPS-EB: A1x | miner's lettuce | |
| Clematis ligusticifolia | CNPS-EB: C | western virgin's bower, virgin's bower | |
| Clintonia andrewsiana | CNPS-EB: A1 | red clintonia | |
| Collinsia bartsiifolia var. bartsiifolia | CNPS-EB: A1x | white Chinese houses | |
| Collinsia bartsiifolia var. davidsonii | CNPS-EB: A1x | ||
| Collinsia bartsiifolia var. stricta | Highly unlikely it occurs here. Only 1 population but ID is very questionable | CNPS-EB: A1? | white Chinese houses |
| Collinsia bartsiifolia var. unknown | CNPS-EB: A1? | white Chinese houses | |
| Collinsia parviflora | CNPS-EB: B | blue-eyed Mary | |
| Collinsia sparsiflora var. sparsiflora | CNPS-EB: C | few-flowered blue-eyed Mary | |
| Collinsia sparsiflora var. unknown | CNPS-EB: C? | few-flowered blue-eyed Mary | |
| Collinsia tinctoria | CNPS-EB: A2 | iodine collinsia | |
| Collomia diversifolia | CNPS-EB: *A1 State CNPS: 4.3 Global Rank: G4 CNDDB Rank: S4 | serpentine collomia | |
| Collomia heterophylla | CNPS-EB: A1 | variable-leaf collomia | |
| Convolvulus simulans | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4 CNDDB Rank: S4 | small-flowered morning-glory | |
| Corallorhiza maculata var. maculata | (forma immaculata is more comm | CNPS-EB: A2 | spotted coralroot |
| Corallorhiza striata | (C. maculata is more common) | CNPS-EB: A1x | striped coralroot |
| Cordylanthus nidularius | CNPS-EB: *A1 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 CESA Status: CR | Mount Diablo bird's-beak | |
| Cordylanthus pilosus subsp. pilosus | CNPS-EB: B | hairy bird's-beak | |
| Cordylanthus rigidus subsp. rigidus | CNPS-EB: A1 | stiffly-branched bird's-beak | |
| Cornus glabrata | CNPS-EB: A1 | brown dogwood | |
| Cornus sericea subsp. occidentalis | CNPS-EB: C | western dogwood | |
| Cornus sericea subsp. sericea | CNPS-EB: C | American dogwood | |
| Cornus sericea subsp. unknown | CNPS-EB: C? | American dogwood | |
| Crassula aquatica | CNPS-EB: B | water pygmy-weed | |
| Crassula solieri | (C. connata and aquatica are more common) | CNPS-EB: A1x | pygmy-weed |
| Crocanthemum scoparium var. vulgare | (formerly Helianthemum scoparium var. vulgare) | CNPS-EB: B | peak rush-rose |
| Crocidium multicaule | CNPS-EB: A1 | spring gold | |
| Croton californicus | CNPS-EB: A2 | California croton | |
| Cryptantha clevelandii var. florosa | CNPS-EB: B | Cleveland's cryptantha | |
| Cryptantha corollata | formerly C. decipiens. Also includes previous records for C. rattanii | CNPS-EB: A2 | COAST RANGE CRYPTANTHA |
| Cryptantha hooveri | (historical-1908) | CNPS-EB: *A1x State CNPS: 1A Global Rank: GH CNDDB Rank: SH | Hoover's cryptantha |
| Cryptantha juniperensis | (formerly C. nevadensis var. rigida) | CNPS-EB: A1 | Nevada cryptantha |
| Cryptantha micromeres | CNPS-EB: A2 | minute-flowered cryptantha | |
| Cryptantha microstachys | CNPS-EB: A2 | Tejon cryptantha | |
| Cryptantha muricata var. jonesii | CNPS-EB: A1? | Jones' cryptantha | |
| Cryptantha muricata var. muricata | CNPS-EB: A1x | showy prickly-nut cryptantha | |
| Cryptantha muricata var. unknown | CNPS-EB: A1? | prickly cryptantha | |
| Cryptantha nemaclada | CNPS-EB: A1x | Colusa cryptantha | |
| Cryptantha torreyana var. pumila | CNPS-EB: B | Torrey's cryptantha | |
| Cucurbita foetidissima | CNPS-EB: A1 | buffalo gourd, calabazilla, calabazilla | |
| Cuscuta californica var. californica | CNPS-EB: A2 | California dodder | |
| Cuscuta campestris | CNPS-EB: A1 | field dodder | |
| Cuscuta indecora var. indecora | CNPS-EB: A1x | large-seeded dodder, pretty dodder | |
| Cuscuta occidentalis | (formerly C. californica var. | CNPS-EB: A1x | California dodder |
| Cuscuta pacifica var. pacifica | (formerly C. salina var. major) | CNPS-EB: C | salt-marsh dodder |
| Cuscuta salina | CNPS-EB: A1 | SALT DODDER | |
| Cuscuta subinclusa | CNPS-EB: C | canyon dodder | |
| Cyperus erythrorhizos | CNPS-EB: B | red-rooted cyperus | |
| Cyperus niger | CNPS-EB: A2 | black sedge | |
| Cyperus odoratus | CNPS-EB: A1x | coarse cyperus | |
| Cyperus strigosus | CNPS-EB: A1 | false nutsedge, straw-colored cyperus | |
| Danthonia californica | CNPS-EB: B | California oat grass | |
| Datisca glomerata | CNPS-EB: C | durango root | |
| Deinandra bacigalupii | (formerly Hemizonia increscens | CNPS-EB: *A1 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 CESA Status: CE | Livermore tarplant |
| Deinandra corymbosa | (formerly Hemizonia corymbosa) | CNPS-EB: A2 | coast tarweed |
| Deinandra kelloggii | (formerly Hemizonia k.) | CNPS-EB: A2 | Kellogg's tarweed |
| Deinandra lobbii | (formerly Hemizonia l.) | CNPS-EB: C | three-rayed tarweed |
| Delphinium californicum subsp. californicum | CNPS-EB: B | coast larkspur, California larkspur | |
| Delphinium californicum subsp. interius | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G3T3 CNDDB Rank: S3 | Hospital Canyon larkspur | |
| Delphinium decorum subsp. decorum | coast larkspur | ||
| Delphinium gypsophilum | CNPS-EB: A1 | gypsum-loving larkspur | |
| Delphinium hansenii subsp. hansenii | CNPS-EB: A2 | Hansen's larkspur | |
| Delphinium hesperium subsp. hesperium | CNPS-EB: B | western larkspur | |
| Delphinium nudicaule | CNPS-EB: C | red larkspur, orange larkspur | |
| Delphinium parryi subsp. parryi | CNPS-EB: A2 | Parry's larkspur | |
| Delphinium recurvatum | CNPS-EB: *A1x State CNPS: 1B.2 Global Rank: G2? CNDDB Rank: S2? | recurved larkspur | |
| Delphinium variegatum subsp. variegatum | CNPS-EB: C | royal larkspur | |
| Dendromecon rigida | CNPS-EB: A2 | bush poppy | |
| Deschampsia cespitosa subsp. cespitosa | CNPS-EB: C | tufted hairgrass | |
| Deschampsia cespitosa subsp. holciformis | CNPS-EB: B | tufted hairgrass | |
| Deschampsia danthonioides | CNPS-EB: C | annual hair grass | |
| Deschampsia elongata | CNPS-EB: C | slender hair grass | |
| Descurainia pinnata subsp. brachycarpa | CNPS-EB: A1x | tansy mustard | |
| Dicentra formosa | CNPS-EB: A2 | Pacific bleeding heart, bleeding heart | |
| Dichelostemma multiflorum | CNPS-EB: A1x | wild hyacinth, many-flowered brodiaea | |
| Dichelostemma volubile | 2 questionable ID sites. Needs field research | CNPS-EB: A1? | twining brodiaea, snake lily |
| Dichondra donelliana | CNPS-EB: A1 | dichondra | |
| Diplacus bolanderi | (formerly Mimulus b.) | CNPS-EB: A1 | Bolander's monkeyflower |
| Diplacus douglasii | (formerly Mimulus d.) | CNPS-EB: A2 | Douglas monkeyflower |
| Diplacus kelloggii | (formerly Mimulus kelloggii) | CNPS-EB: A1x | Kellogg's monkeyflower |
| Diplacus rattanii | (formerly Mimulus rattanii) | CNPS-EB: A2 | Rattan monkeyflower |
| Diplacus tricolor | (formerly Mimulus tricolor) | CNPS-EB: A1x | tricolor monkeyflower |
| Dirca occidentalis | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | western leatherwood | |
| Downingia bella | CNPS-EB: A1x | Hoover's downingia | |
| Downingia cuspidata | CNPS-EB: A1 | cuspidate downingia | |
| Downingia insignis | CNPS-EB: A1 | cupped downingia | |
| Downingia ornatissima var. mirabilis | (historical-1956; formerly D. ornatissima var. eximia) | CNPS-EB: A1x | Solano downingia |
| Downingia pulchella | CNPS-EB: B | flat-faced downingia | |
| Draba cuneifolia | CNPS-EB: A1 | Sonora draba | |
| Dudleya cymosa subsp. cymosa | (ssp. paniculata is more common) | CNPS-EB: A1 | spreading dudleya |
| Dudleya cymosa subsp. paniculata | CNPS-EB: C | spreading dudleya | |
| Dudleya farinosa | CNPS-EB: A2 | bluff lettuce, powdery dudleya | |
| Eastwoodia elegans | Unclear if it occurs here | CNPS-EB: A1? | yellow mock aster |
| Echinodorus berteroi | CNPS-EB: A2 | burhead | |
| Eclipta prostrata | CNPS-EB: A1 | false daisy | |
| Ehrendorferia chrysantha | (formerly Dicentra chrysantha) | CNPS-EB: B | golden ear-drops |
| Elatine brachysperma | CNPS-EB: A1 | waterwort | |
| Elatine californica | CNPS-EB: A2 | waterwort | |
| Eleocharis acicularis var. acicularis | CNPS-EB: B | needle spike-rush | |
| Eleocharis parishii | CNPS-EB: A1 | Dombey's spike-rush | |
| Eleocharis parvula | CNPS-EB: *A1 State CNPS: 4.3 Global Rank: G5 CNDDB Rank: S3 | small spikerush | |
| Eleocharis rostellata | (historical-1933) | CNPS-EB: A1x | beaked spike-rush |
| Elymus elymoides var. elymoides | CNPS-EB: B | squirreltail | |
| Elymus mollis subsp. mollis | CNPS-EB: A1x | American dune grass, sea lyme grass | |
| Elymus multisetus | CNPS-EB: C | big squirreltail | |
| Elymus stebbinsii | CNPS-EB: A1x | Stebbins' wheat grass, Parish's wheat-grass | |
| Elymus trachycaulus subsp. trachycaulus | CNPS-EB: A1 | slender wheat grass | |
| Elymus xhansenii | CNPS-EB: B | Hansen squirreltail | |
| Elymus xsaundersii | CNPS-EB: A1x | ||
| Emmenanthe rosea | (formerly E. penduliflora var. rosea) | CNPS-EB: A1x | |
| Enemion occidentale | (formerly Isopyrum o.) | CNPS-EB: A2 | western rue-anemone |
| Enemion stipitatum | (formerly Isopyrum s.) | CNPS-EB: A2 | Siskiyou rue-anemone |
| Ephedra californica | 2 questionable ID sites. Needs field research | CNPS-EB: A1? | desert tea, Mormon tea |
| Ephedra viridis | Questionable ID. Needs field research | CNPS-EB: A1? | green ephedra |
| Epilobium campestre | CNPS-EB: B | smooth boisduvalia | |
| Epilobium ciliatum subsp. watsonii | (ssp. ciliatum is more common) | CNPS-EB: A1 | San Francisco willowherb |
| Epilobium cleistogamum | CNPS-EB: A1 | cleistogamous boisduvalia | |
| Epilobium torreyi | CNPS-EB: A1 | narrow-leaved boisduvalia | |
| Epipactis gigantea | CNPS-EB: A1 | stream orchid | |
| Equisetum laevigatum | CNPS-EB: A2 | smooth scouring rush | |
| Eragrostis hypnoides | CNPS-EB: A2 | ||
| Eragrostis mexicana subsp. virescens | CNPS-EB: A1x | Orcutt's eragrostis | |
| Eremalche exilis | CNPS-EB: A1 | WHITE MALLOW | |
| Eremalche parryi subsp. parryi | CNPS-EB: A1 | Parry's mallow | |
| Eremothera boothii subsp. decorticans | (formerly Camissonia boothii subsp. decorticans) | CNPS-EB: A1 | shredding evening-primrose |
| Eriastrum abramsii | CNPS-EB: A2 | Abram's eriastrum | |
| Eriastrum ertterae | CNPS-EB: *A1 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 CESA Status: CC | Ertter's eriastrum | |
| Eriastrum pluriflorum subsp. pluriflorum | CNPS-EB: A1 | many-flowered eriastrum | |
| Ericameria arborescens | CNPS-EB: B | golden-fleece | |
| Ericameria nauseosa var. mohavensis | CNPS-EB: A2 | Mojave rabbitbrush, rubber rabbitbrush | |
| Erigeron petrophilus var. petrophilus | CNPS-EB: B | rock daisy | |
| Erigeron philadelphicus var. philadelphicus | CNPS-EB: C | fleabane | |
| Erigeron reductus var. angustatus | CNPS-EB: A1 | California rayless daisy | |
| Eriogonum angulosum | CNPS-EB: B | angle-stem wild buckwheat, angle-stemmed eriogonum | |
| Eriogonum covilleanum | CNPS-EB: A2 | Coville's wild buckwheat, Coville's eriogonum | |
| Eriogonum deserticola | CNPS-EB: A1x | Colorado desert wild buckwheat, desert eriogonum | |
| Eriogonum fasciculatum var. foliolosum | CNPS-EB: A1 | leafy California buckwheat, California buckwheat | |
| Eriogonum fasciculatum var. polifolium | CNPS-EB: A2 | Mojave desert California buckwheat, California buckwheat | |
| Eriogonum gracile var. gracile | CNPS-EB: C | slender woolly wild buckwheat, slender buckwheat | |
| Eriogonum inerme var. inerme | CNPS-EB: A1 | unarmed buckwheat | |
| Eriogonum luteolum var. caninum | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G5T2 CNDDB Rank: S2 | Tiburon buckwheat | |
| Eriogonum luteolum var. luteolum | CNPS-EB: A2 | golden-carpet wild buckwheat, golden carpet | |
| Eriogonum nudum var. pauciflorum | CNPS-EB: A1 | little-flower wild buckwheat | |
| Eriogonum nudum var. psychicola | CNPS-EB: *A1 State CNPS: 1B.1 Global Rank: G5T1 CNDDB Rank: S1 | Antioch Dunes buckwheat | |
| Eriogonum nudum var. pubiflorum | CNPS-EB: A1x | Fremont's wild buckwheat, naked-stemmed buckwheat | |
| Eriogonum roseum | CNPS-EB: A2 | wand wild buckwheat, virgate buckwheat | |
| Eriogonum truncatum | CNPS-EB: *A1 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 | Mount Diablo buckwheat | |
| Eriogonum umbellatum var. bahiiforme | Previously mis-recorded as var. smallianum which does not occur in the East Bay | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G5T3 CNDDB Rank: S3 | Small's sulphur flower, bay buckwheat |
| Eriogonum wrightii var. trachygonum | CNPS-EB: C | rough-node bastard-sage, Wright's eriogonum | |
| Eriophyllum jepsonii | CNPS-EB: *A2 State CNPS: 4.3 Global Rank: G3 CNDDB Rank: S3 | Jepson's woolly sunflower | |
| Eriophyllum lanatum var. achilleoides | CNPS-EB: C | woolly sunflower | |
| Eriophyllum staechadifolium | CNPS-EB: A2 | seaside woolly sunflower, lizard-tail | |
| Eryngium aristulatum var. hooveri | CNPS-EB: *A1 State CNPS: 1B.1 Global Rank: G5T1 CNDDB Rank: S1 | Hoover's button-celery | |
| Eryngium armatum | CNPS-EB: A1 | coastal button-celery, coast coyote-thistle | |
| Eryngium articulatum | CNPS-EB: A1 | beethistle, coyote-thistle | |
| Eryngium castrense | CNPS-EB: A2 | great valley coyote-thistle, Vasey's coyote-thistle | |
| Eryngium jepsonii | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | ||
| Eryngium racemosum | CNPS-EB: *A1x State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 CESA Status: CE | delta button-celery | |
| Eryngium spinosepalum | CNPS-EB: *A1 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | ||
| Eryngium vaseyi var. vallicola | CNPS-EB: A1 | coyote-thistle, Vasey's coyote-thistle | |
| Erysimum capitatum var. angustatum | (ssp. capitatum is more common | CNPS-EB: *A1 State CNPS: 1B.1 Global Rank: G5T1 CNDDB Rank: S1 FESA Status: FE CESA Status: CE | Contra Costa wallflower |
| Erythranthe floribunda | (formerly Mimulus floribundus) | CNPS-EB: A1? | floriferous monkeyflower |
| Erythranthe inconspicua | CNPS-EB: *A1 State CNPS: 4.3 Global Rank: G4 CNDDB Rank: S4 | ||
| Erythranthe laciniata | (formerly Mimulus laciniatus) | CNPS-EB: *A1x State CNPS: 4.3 Global Rank: G4 CNDDB Rank: S4 | CUT-LEAVED MONKEYFLOWER |
| Erythranthe latidens | (formerly Mimulus latidens) | CNPS-EB: A1 | broad-toothed monkeyflower |
| Erythranthe microphylla | CNPS-EB: A1x | ||
| Erythranthe nasuta | CNPS-EB: A2 | shy monkeyflower | |
| Eschscholzia caespitosa | CNPS-EB: A1 | tufted poppy | |
| Eschscholzia rhombipetala | CNPS-EB: *A1 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 | diamond-petaled California poppy | |
| Euonymus occidentalis var. occidentalis | CNPS-EB: A1 | burning bush | |
| Euphorbia ocellata subsp. ocellata | CNPS-EB: B | valley spurge | |
| Euphorbia serpillifolia subsp. serpillifolia | CNPS-EB: C | thyme-leaved spurge | |
| Extriplex californica | (historical-1921) | CNPS-EB: A1x | California orach, California saltbush |
| Extriplex joaquinana | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | San Joaquin spearscale, San Joaquin saltbush | |
| Festuca californica | CNPS-EB: C | California fescue | |
| Festuca elmeri | CNPS-EB: A1 | Elmer's fescue | |
| Festuca idahoensis | CNPS-EB: C | Idaho fescue, blue bunchgrass | |
| Festuca octoflora | CNPS-EB: A2 | sixweeks grass, slender fescue | |
| Festuca rubra | CNPS-EB: C | red fescue | |
| Forestiera pubescens | CNPS-EB: B | desert olive | |
| Frangula californica subsp. tomentella | (formerly Rhamnus t.) | CNPS-EB: C | hoary coffeeberry |
| Fraxinus dipetala | CNPS-EB: B | California ash, flowering ash | |
| Fraxinus latifolia | CNPS-EB: B | Oregon ash | |
| Fremontodendron californicum | CNPS-EB: A1 | flannelbush | |
| Fritillaria agrestis | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G3 CNDDB Rank: S3 | stinkbells | |
| Fritillaria falcata | CNPS-EB: *A1 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | talus fritillary | |
| Fritillaria liliacea | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | fragrant fritillary | |
| Galium andrewsii subsp. gatense | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G5T3 CNDDB Rank: S3 | phlox-leaf serpentine bedstraw, serpentine bedstraw | |
| Galium porrigens var. tenue | (var. porrigens is more common | CNPS-EB: A1 | climbing bedstraw |
| Galium trifidum subsp. columbianum | CNPS-EB: A1 | trifid bedstraw | |
| Galium triflorum | CNPS-EB: C | sweet-scented bedstraw | |
| Garrya congdonii | CNPS-EB: A1x | Congdon's silk-tassel | |
| Garrya elliptica | CNPS-EB: B | silk tassel bush | |
| Garrya flavescens | CNPS-EB: A2 | silk tassel bush | |
| Garrya fremontii | CNPS-EB: A1x | silk tassel bush | |
| Gaultheria shallon | CNPS-EB: A1 | salal | |
| Gilia achilleifolia subsp. unknown | CNPS-EB: C? | California gilia | |
| Gilia capitata subsp. capitata | CNPS-EB: A1 | blue field gilia | |
| Gilia capitata subsp. staminea | CNPS-EB: C | blue field gilia | |
| Gilia capitata subsp. unknown | CNPS-EB: A1? | blue field gilia | |
| Gilia millefoliata | CNPS-EB: *A1x State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | DARK-EYED GILIA | |
| Gilia tricolor subsp. diffusa | CNPS-EB: B | birds-eye gilia | |
| Gilia tricolor subsp. tricolor | CNPS-EB: C | birds-eye gilia | |
| Gilia tricolor subsp. unknown | CNPS-EB: B? | birds-eye gilia | |
| Githopsis diffusa subsp. robusta | CNPS-EB: A2 | southern bluecup | |
| Githopsis specularioides | CNPS-EB: B | common bluecup | |
| Glyceria leptostachya | CNPS-EB: A1 | narrow manna grass, Davy's mannagrass | |
| Glycyrrhiza lepidota | CNPS-EB: C | wild licorice | |
| Gratiola ebracteata | CNPS-EB: A1 | bractless hedge-hyssop | |
| Gruvelia pusilla | (formerly Pectocarya pusilla) | CNPS-EB: B | little pectocarya |
| Gutierrezia californica | CNPS-EB: C | California matchweed | |
| Helenium bigelovii | (H. puberulum is more common) | CNPS-EB: A2 | Bigelow's sneezeweed |
| Helianthella californica var. californica | CNPS-EB: A2 | California helianthella | |
| Helianthella castanea | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Diablo helianthella | |
| Helianthus californicus | CNPS-EB: C | California sunflower | |
| Helianthus gracilentus | CNPS-EB: B | slender sunflower | |
| Hemizonia congesta subsp. lutescens | CNPS-EB: B | hayfield tarweed | |
| Hesperevax acaulis var. ambusticola | (H. sparsiflora is more common | CNPS-EB: A1x | fire evax |
| Hesperevax caulescens | (H. sparsiflora is more common | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G3 CNDDB Rank: S3 | hogwallow starfish |
| Hesperocyparis sargentii | (formerly Cupressus s.) | CNPS-EB: A1 | Sargent cypress |
| Hesperolinon breweri | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Brewer's western flax | |
| Hesperolinon californicum | CNPS-EB: B | California dwarf flax | |
| Hesperolinon clevelandii | CNPS-EB: A1 | Cleveland's dwarf flax | |
| Hesperolinon disjunctum | CNPS-EB: A1 | dwarf flax | |
| Hesperolinon micranthum | CNPS-EB: A2 | small-flowered dwarf flax | |
| Hesperolinon tehamense | 3 questionable ID sites. Needs field research | CNPS-EB: *A1? State CNPS: 1B.3 Global Rank: G2 CNDDB Rank: S2 | Napa western flax |
| Hesperomecon linearis | (formerly Meconella l.) (hist | CNPS-EB: A1x | narrow-leaved meconella |
| Heterocodon rariflorum | CNPS-EB: A1 | heterocodon | |
| Heterotheca oregona var. rudis | CNPS-EB: A1 | Oregon goldenaster | |
| Heterotheca oregona var. scaberrima | CNPS-EB: A1 | Oregon goldenaster | |
| Heterotheca sessiliflora subsp. bolanderi | (H. s. ssp. echioides is more | CNPS-EB: C | Bolander goldenaster |
| Heterotheca sessiliflora var. bolanderioides | CNPS-EB: A1x | golden aster | |
| Hibiscus lasiocarpos var. occidentalis | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G5T3 CNDDB Rank: S3 | rose-mallow | |
| Hieracium albiflorum | CNPS-EB: C | white hawkweed | |
| Hoita macrostachya | CNPS-EB: B | California hemp | |
| Hoita orbicularis | (historical-1936) | CNPS-EB: A1x | round-leaved psoralea |
| Hoita strobilina | (historical-1865) | CNPS-EB: *A1x State CNPS: 1B.1 Global Rank: G2? CNDDB Rank: S2? | Loma Prieta hoita |
| Holocarpha macradenia | CNPS-EB: *A1 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 FESA Status: FT CESA Status: CE | Santa Cruz tarplant | |
| Holocarpha obconica | CNPS-EB: B | San Joaquin tarplant | |
| Holozonia filipes | CNPS-EB: A2 | whitecrown, holozonia | |
| Hordeum brachyantherum subsp. californicum | (ssp. brachyantherum is more common | CNPS-EB: A2 | California barley |
| Hordeum depressum | CNPS-EB: B | low barley, alkali barley | |
| Hordeum jubatum subsp. jubatum | CNPS-EB: A2 | foxtail barley, squirreltail barley | |
| Horkelia californica var. californica | CNPS-EB: A1 | California horkelia | |
| Horkelia californica var. elata | CNPS-EB: A2 | tall horkelia | |
| Horkelia californica var. frondosa | CNPS-EB: B | leafy horkelia | |
| Horkelia cuneata var. sericea | (historical-1894) | CNPS-EB: *A1x State CNPS: 1B.1 Global Rank: G4T1? CNDDB Rank: S1? | Kellogg's horkelia |
| Hosackia crassifolia var. crassifolia | CNPS-EB: A2 | broad-leaved lotus | |
| Hosackia oblongifolia var. oblongifolia | Unclear if it occurs in the East Bay | CNPS-EB: A1? | narrow-leaved lotus |
| Hosackia stipularis var. stipularis | CNPS-EB: A1 | stipulate lotus | |
| Hydrocotyle ranunculoides | CNPS-EB: A2 | floating marsh pennywort | |
| Hydrocotyle verticillata | CNPS-EB: B | whorled marsh pennywort | |
| Hydrophyllum occidentale | CNPS-EB: A1 | western waterleaf | |
| Hypericum scouleri | CNPS-EB: A1x | Scouler's st. john's wort, Scouler's St. John's wort | |
| Idahoa scapigera | CNPS-EB: A1 | flat-pod | |
| Iris douglasiana | CNPS-EB: B | Douglas iris | |
| Iris longipetala | CNPS-EB: *A1 State CNPS: 4.2 Global Rank: G3 CNDDB Rank: S3 | coast iris | |
| Isocoma arguta | (historical-date unknown) | CNPS-EB: *A1x State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 | Carquinez goldenbush |
| Isoetes howellii | CNPS-EB: A1 | Howell's quillwort | |
| Isolepis carinata | (formerly Scirpus koilolepis) | CNPS-EB: A1 | dwarf club-rush |
| Isolepis cernua | (formerly Scirpus cernuus) | CNPS-EB: C | low club-rush |
| Juncus articulatus subsp. articulatus | CNPS-EB: A1x | jointed rush | |
| Juncus bufonius var. occidentalis | (historical-1895) (vars. bufon | CNPS-EB: A1x | western toad rush, toad rush |
| Juncus dubius | CNPS-EB: A1x | mariposa rush, Mariposa rush | |
| Juncus ensifolius | Unclear if it occurs in East Bay | CNPS-EB: A1? | dagger rush, swordleaved rush, three-stamened rush |
| Juncus lescurii | CNPS-EB: A1 | San Francisco rush, salt rush | |
| Juncus mexicanus | CNPS-EB: C | Mexican rush | |
| Juncus oxymeris | CNPS-EB: A1 | pointed rush | |
| Juncus phaeocephalus var. paniculatus | CNPS-EB: B | panicled rush, brown-headed rush | |
| Juncus phaeocephalus var. phaeocephalus | CNPS-EB: B | brownheaded rush | |
| Juncus phaeocephalus var. unknown | CNPS-EB: A2? | brown-headed rush | |
| Juniperus californica | CNPS-EB: C | California juniper | |
| Keckiella breviflora var. breviflora | CNPS-EB: A2 | gaping penstemon | |
| Keckiella corymbosa | CNPS-EB: C | redwood penstemon | |
| Koeleria macrantha | CNPS-EB: C | june grass | |
| Kopsiopsis strobilacea | (formerly Boschniakia strobilacea) | CNPS-EB: A1 | California ground-cone |
| Laennecia coulteri | (formerly Conyza c.) | CNPS-EB: A1 | Coulter's horseweed, Coulter's conyza |
| Lastarriaea coriacea | CNPS-EB: A2 | leather-spineflower, lastarriaea | |
| Lasthenia conjugens | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 FESA Status: FE | Contra Costa goldfields | |
| Lasthenia ferrisiae | CNPS-EB: *A1 State CNPS: 4.2 Global Rank: G3 CNDDB Rank: S3 | Ferris' goldfields | |
| Lasthenia fremontii | CNPS-EB: A1 | Fremont's goldfields | |
| Lasthenia glaberrima | CNPS-EB: B | smooth goldfields | |
| Lasthenia glabrata subsp. glabrata | CNPS-EB: A2 | yellow-ray goldfields | |
| Lasthenia maritima | CNPS-EB: A1x | maritime goldfields, seaside goldfields, Farallon weed | |
| Lasthenia microglossa | CNPS-EB: A2 | small-ray goldfields | |
| Lasthenia minor | CNPS-EB: A1 | coastal goldfields, woolly goldfields | |
| Lasthenia platycarpha | CNPS-EB: A1 | alkali goldfields | |
| Lathyrus jepsonii var. californicus | CNPS-EB: B | buff pea | |
| Lathyrus jepsonii var. jepsonii | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G5T2 CNDDB Rank: S2 | delta tule pea, Delta tule pea | |
| Layia chrysanthemoides | CNPS-EB: A2 | smooth layia | |
| Layia gaillardioides | CNPS-EB: A2 | woodland layia | |
| Layia glandulosa | (historical-1983 but not seen | CNPS-EB: A1x | white layia |
| Layia hieracioides | CNPS-EB: C | tall layia | |
| Layia platyglossa | CNPS-EB: B | tidy-tips | |
| Leersia oryzoides | CNPS-EB: A1 | rice cutgrass | |
| Legenere limosa | CNPS-EB: *A1 State CNPS: 1B.1 Global Rank: G2 CNDDB Rank: S2 | legenere | |
| Lepechinia calycina | CNPS-EB: C | pitcher sage | |
| Lepidium acutidens | CNPS-EB: C | sharp-toothed pepper-grass | |
| Lepidium dictyotum | CNPS-EB: B | alkali pepper-grass | |
| Lepidium latipes | CNPS-EB: B | dwarf peppergrass | |
| Lepidium oblongum | (historical-1937) | CNPS-EB: A1x | wayside pepper-grass |
| Lepidium oxycarpum | CNPS-EB: A2 | sharp-podded pepper-grass | |
| Lepidospartum squamatum | (historical-1933) | CNPS-EB: A1x | California broom-shrub |
| Leptochloa fusca subsp. fascicularis | CNPS-EB: A1 | bearded sprangletop | |
| Leptochloa fusca subsp. uninervia | CNPS-EB: A1 | mexican sprangletop, dense-flowered sprangle-top | |
| Leptosiphon ambiguus | (formerly Linanthus a.) | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4 CNDDB Rank: S4 | serpentine leptosiphon, serpentine linanthus |
| Leptosiphon androsaceus | (formerly Linanthus a.) | CNPS-EB: C | common linanthus, common leptosiphon |
| Leptosiphon aureus | (formerly L.acicularis, Linanthus acicularis) | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4? CNDDB Rank: S4? | bristly leptosiphon, bristly linanthus |
| Leptosiphon bolanderi | (formerly Linanthus b.) | CNPS-EB: A1 | Bolander's linanthus, Bolander's leptosiphon |
| Leptosiphon ciliatus | (formerly Linanthus c.) | CNPS-EB: C | whisker brush |
| Leptosiphon grandiflorus | (formerly Linanthus g.) | CNPS-EB: *A1x State CNPS: 4.2 Global Rank: G3G4 CNDDB Rank: S3S4 | large-flowered leptosiphon, large-flowered linanthus |
| Leptosiphon liniflorus | (formerly Linanthus l.) | CNPS-EB: A1 | flax-flowered linanthus, flax-flowered leptosiphon |
| Leptosiphon parviflorus | (formerly Linanthus p.) | CNPS-EB: B | small-flowered linanthus, small-flowered leptosiphon |
| Leptosiphon pygmaeus subsp. continentalis | (formerly Linanthus p. ssp. c. | CNPS-EB: B | pygmy linanthus, pygmy leptosiphon |
| Leptosyne calliopsidea | (formerly Coreopsis c.) | CNPS-EB: A1 | leafy-stemmed coreopsis |
| Leptosyne hamiltonii | (formerly Coreopsis h.) | CNPS-EB: *A1 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Mount Hamilton coreopsis |
| Leptosyne stillmanii | (formerly Coreopsis s.) | CNPS-EB: A1x | Stillman's coreopsis |
| Lessingia hololeuca | (historical-1940) | CNPS-EB: *A1x State CNPS: 3 Global Rank: G2G3 CNDDB Rank: S2S3 | woolly-headed lessingia |
| Lessingia nana | CNPS-EB: A1x | dwarf lessingia | |
| Lessingia nemaclada | CNPS-EB: A2 | slender-stemmed lessignia | |
| Lessingia pectinata var. tenuipes | CNPS-EB: A2 | valley lessingia | |
| Lessingia ramulosa | CNPS-EB: A1 | ||
| Lessingia tenuis | CNPS-EB: *A2 State CNPS: 4.3 Global Rank: G4 CNDDB Rank: S4 | spring lessingia | |
| Lewisia rediviva var. rediviva | CNPS-EB: A2 | bitterroot | |
| Ligusticum apiifolium | CNPS-EB: A2 | Pacific lovage | |
| Lilaeopsis masonii | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G2 CNDDB Rank: S2 CESA Status: CR | Mason's lilaeopsis | |
| Lilium pardalinum subsp. pardalinum | CNPS-EB: A1 | leopard lily | |
| Limnanthes douglasii subsp. douglasii | CNPS-EB: A1 | meadowfoam | |
| Limnanthes douglasii subsp. nivea | CNPS-EB: A1x | meadowfoam | |
| Limnanthes douglasii subsp. rosea | CNPS-EB: A1x | meadowfoam | |
| Limonium californicum | CNPS-EB: C | western marsh-rosemary, sea-lavender, ma | |
| Limosella acaulis | CNPS-EB: A2 | southern mudwort | |
| Limosella aquatica | CNPS-EB: A1x | northern mudwort | |
| Linanthus dichotomus subsp. meridianus | CNPS-EB: A1 | ||
| Linum lewisii var. lewisii | (historical-1936) | CNPS-EB: A1x | western blue flax |
| Lithophragma bolanderi | CNPS-EB: A1 | Bolander starflower | |
| Lithophragma cymbalaria | (historical-1895) | CNPS-EB: A1x | mission star |
| Lithophragma parviflorum var. parviflorum | CNPS-EB: B | prairie star | |
| Lomatium caruifolium var. caruifolium | CNPS-EB: B | caraway-leaved lomatium | |
| Ludwigia palustris | CNPS-EB: A1x | American marsh purslane | |
| Lupinus affinis | CNPS-EB: A1 | lupine | |
| Lupinus arboreus | CNPS-EB: A2 | yellow bush lupine | |
| Lupinus benthamii | (historical-1955) | CNPS-EB: A1x | spider lupine |
| Lupinus chamissonis | (historical-1963) | CNPS-EB: A1x | Chamisso's bush lupine |
| Lupinus concinnus | CNPS-EB: A1 | Bajada lupine | |
| Lupinus littoralis var. variicolor | (formerly L. variicolor) | CNPS-EB: A1? | bluff lupine |
| Lupinus luteolus | CNPS-EB: A1x | butter lupine | |
| Lupinus pachylobus | CNPS-EB: B | big pod lupine | |
| Lycopus americanus | CNPS-EB: A2 | cutleaf bugleweed | |
| Lycopus asper | CNPS-EB: A1 | bugleweed | |
| Lysimachia maritima | CNPS-EB: A1 | sea-milkwort | |
| Lysimachia minima | (formerly Anagallis minima, Centunculus minimus) | CNPS-EB: A1 | chaffweed |
| Lythrum californicum | CNPS-EB: B | California loosestrife | |
| Madia anomala | CNPS-EB: A1x | plump-seeded madia | |
| Madia exigua | CNPS-EB: C | ||
| Madia radiata | (historical-1941) | CNPS-EB: *A1x State CNPS: 1B.1 Global Rank: G3 CNDDB Rank: S3 | showy golden madia, showy madia |
| Malacothamnus fremontii | CNPS-EB: C | white-coat mallow | |
| Malacothamnus hallii | (M. fasciculatus in Jepson Man | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Hall's bush-mallow |
| Malacothrix californica | (historical-1895) | CNPS-EB: A1x | California malacothrix |
| Malacothrix clevelandii | CNPS-EB: A2 | Cleveland's malacothrix | |
| Malacothrix coulteri | CNPS-EB: A1 | snake's-head | |
| Malacothrix floccifera | CNPS-EB: C | woolly malacothrix | |
| Marah oregana | CNPS-EB: C | coast man-root | |
| Matricaria occidentalis | (formerly Chamomilla o.) (hist | CNPS-EB: A1x | valley mayweed, valley pineapple weed |
| Meconella californica | CNPS-EB: A1x | California meconella | |
| Meconella oregana | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G2G3 CNDDB Rank: S2 | Oregon meconella | |
| Melica bulbosa | CNPS-EB: A1 | onion grass | |
| Melica californica | CNPS-EB: C | California melic | |
| Melica subulata | CNPS-EB: A1 | ||
| Mentha canadensis | CNPS-EB: B | American cornmint, Japanese peppermint | |
| Mentzelia affinis | CNPS-EB: B | hydra stick-leaf | |
| Mentzelia dispersa | CNPS-EB: A2 | Nada stick-leaf | |
| Mentzelia laevicaulis var. laevicaulis | (historical-1969) | CNPS-EB: A1x | blazing star |
| Mentzelia lindleyi | CNPS-EB: B | Lindley's blazing star | |
| Mentzelia micrantha | CNPS-EB: A2 | small-flowered stick-leaf | |
| Mentzelia pectinata | (historical-1935) | CNPS-EB: A1x | San Joaquin blazing star |
| Micropus amphibolus | (historical - 1955) | CNPS-EB: *A1x State CNPS: 3.2 Global Rank: G3G4 CNDDB Rank: S3S4 | Mount Diablo cottonseed, Mt. Diablo cottonweed |
| Micropus californicus var. subvestitus | (var. californicus is more common) | CNPS-EB: A2 | slender cottonweed |
| Microseris acuminata | CNPS-EB: A1 | Sierra Foothills microseris | |
| Microseris bigelovii | (historical-1891) | CNPS-EB: A1x | coast microseris |
| Microseris campestris | CNPS-EB: A1 | San Joaquin microseris | |
| Microseris douglasii subsp. tenella | (subsp douglasii is more common) | CNPS-EB: A2 | silver puffs |
| Microseris elegans | CNPS-EB: A1 | elegant microseris | |
| Microseris sylvatica | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4 CNDDB Rank: S4 | sylvan microseris | |
| Mimetanthe pilosa | (formerly Mimulus pilosus) | CNPS-EB: B | downy monkeyflower |
| Mirabilis laevis var. crassifolia | (formerly M. californica) | CNPS-EB: A1 | wishbone bush, California four o'clock |
| Moehringia macrophylla | CNPS-EB: A2 | large-leaved sandwort, big-leaf sandwort | |
| Monardella breweri subsp. breweri | (historical-1868) | CNPS-EB: A1x | Brewer's monardella |
| Monardella douglasii | CNPS-EB: A2 | fenestra monardella, Fenestra monardella | |
| Monardella sheltonii | CNPS-EB: A1? | Shelton's monardella | |
| Monolepis nuttalliana | CNPS-EB: A1 | Nuttall's poverty weed, poverty weed | |
| Monolopia gracilens | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G3 CNDDB Rank: S3 | woodland woollythreads, woodland monolopia | |
| Monolopia lanceolata | CNPS-EB: A1 | common hillside daisy, common monolopia | |
| Monolopia major | CNPS-EB: B | cupped monolopia | |
| Montia fontana | CNPS-EB: C | water chickweed, blinks, water chickweed | |
| Montia linearis | (historical-1933) | CNPS-EB: A1x | linear-leaved montia |
| Morella californica | (formerly Myrica c.) | CNPS-EB: B | wax myrtle |
| Muilla maritima | CNPS-EB: B | common muilla | |
| Myosotis laxa | CNPS-EB: A1x | BAY FORGET-ME-NOT | |
| Myosurus minimus subsp. apus | CNPS-EB: *A1 State CNPS: 3.1 Global Rank: G5T2Q CNDDB Rank: S2 | little mousetail | |
| Myosurus minimus subsp. minimus | CNPS-EB: C | common mouse-tail | |
| Myosurus sessilis | CNPS-EB: A1 | sessile mouse-tail | |
| Myriopteris covillei | CNPS-EB: C | Coville's lip fern | |
| Myriopteris gracillima | CNPS-EB: A1 | lace fern | |
| Myriopteris intertexta | CNPS-EB: B | coastal lip fern | |
| Navarretia atractyloides | CNPS-EB: A2 | holly-leaved navarretia | |
| Navarretia cotulifolia | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4 CNDDB Rank: S4 | cotula navarretia | |
| Navarretia gowenii | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 | Lime Ridge navarretia | |
| Navarretia hamata subsp. parviloba | CNPS-EB: A1 | hooked navarretia | |
| Navarretia heterandra | CNPS-EB: *A1 State CNPS: 4.3 Global Rank: G4 CNDDB Rank: S4 | Tehama navarretia | |
| Navarretia intertexta | CNPS-EB: A2 | needle-leaved navarretia | |
| Navarretia mellita | CNPS-EB: C | honey-scented navarretia | |
| Navarretia nigelliformis subsp. nigelliformis | CNPS-EB: *A2? State CNPS: 4.2 Global Rank: G4T3 CNDDB Rank: S3 | adobe navarretia | |
| Navarretia nigelliformis subsp. radians | CNPS-EB: *A1 State CNPS: 1B.2 Global Rank: G4T2 CNDDB Rank: S2 | shining navarretia | |
| Navarretia prostrata | CNPS-EB: *A1 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | prostrate vernal pool navarretia | |
| Navarretia pubescens | CNPS-EB: C | downy navarretia | |
| Navarretia tagetina | (historical-1927) | CNPS-EB: A1x | marigold navarretia |
| Navarretia viscidula | CNPS-EB: A2 | sticky navarretia | |
| Nemophila parviflora var. parviflora | CNPS-EB: B | small-flowered nemophila | |
| Nemophila pedunculata | CNPS-EB: B | meadow nemophila | |
| Nicotiana attenuata | CNPS-EB: A1 | coyote tobacco | |
| Nicotiana quadrivalvis | CNPS-EB: B | indian tobacco | |
| Nitrophila occidentalis | CNPS-EB: A1 | nitrophila | |
| Nuttallanthus texanus | CNPS-EB: A2 | blue toadflax | |
| Oenothera deltoides subsp. cognata | CNPS-EB: A2 | desert evening-primrose | |
| Oenothera deltoides subsp. howellii | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G5T1 CNDDB Rank: S1 FESA Status: FE CESA Status: CE | Antioch Dunes evening-primrose | |
| Oenothera elata subsp. hookeri | CNPS-EB: B | evening-primrose | |
| Osmorhiza brachypoda | CNPS-EB: C | California cicely | |
| Oxalis oregana | CNPS-EB: A1 | redwood sorrel | |
| Oxalis pilosa | (formerly O. albicans ssp. p.) | CNPS-EB: B | hairy wood-sorrel |
| Packera breweri | (formerly Senecio b.) | CNPS-EB: C | Brewer's ragwort, Brewer's butterweed |
| Panicum capillare | CNPS-EB: A2 | witch grass | |
| Papaver californicum | CNPS-EB: B | fire poppy | |
| Parietaria hespera var. californica | CNPS-EB: A1 | California pellitory | |
| Pectocarya penicillata | CNPS-EB: A2 | northern pectocarya, winged pectocarya | |
| Pediomelum californicum | CNPS-EB: A2 | indian breadroot | |
| Penstemon centranthifolius | CNPS-EB: B | scarlet bugler | |
| Penstemon heterophyllus var. heterophyllus | CNPS-EB: B | chaparral penstemon | |
| Penstemon heterophyllus var. purdyi | CNPS-EB: A2 | foothill penstemon | |
| Pentachaeta alsinoides | CNPS-EB: C | tiny pentachaeta | |
| Pentachaeta exilis subsp. exilis | CNPS-EB: A1 | meager pentachaeta | |
| Perideridia californica | CNPS-EB: C | California yampah | |
| Perideridia gairdneri subsp. gairdneri | CNPS-EB: *A1x State CNPS: 4.2 Global Rank: G5T3T4 CNDDB Rank: S3S4 | Gairdner's yampah | |
| Perideridia oregana | CNPS-EB: A2 | yampah | |
| Persicaria hydropiperoides | (formerly Polygonum h.) | CNPS-EB: A2 | false waterpepper, water-pepper |
| Persicaria lapathifolia | (formerly Polygonum lapathifol | CNPS-EB: B | willow weed |
| Persicaria punctata | (formerly Polygonum punctatum) | CNPS-EB: C | water smartweed |
| Petasites frigidus var. palmatus | CNPS-EB: A1 | western sweet coltsfoot, coltsfoot | |
| Petunia parviflora | CNPS-EB: A1 | wild petunia | |
| Phacelia breweri | CNPS-EB: C | Brewer's phacelia | |
| Phacelia ciliata | CNPS-EB: B | Great Valley phacelia, Great Valley phacelia | |
| Phacelia divaricata | CNPS-EB: B | divaricate phacelia | |
| Phacelia douglasii | CNPS-EB: A1 | Douglas' phacelia | |
| Phacelia egena | (historical-1956) | CNPS-EB: A1x | phacelia |
| Phacelia malvifolia var. malvifolia | CNPS-EB: A2 | stinging phacelia | |
| Phacelia phacelioides | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Mount Diablo phacelia | |
| Phacelia ramosissima | CNPS-EB: B | branching phacelia | |
| Phacelia rattanii | CNPS-EB: B | Rattan's phacelia | |
| Phacelia suaveolens | CNPS-EB: A1 | sweet-scented phacelia | |
| Phacelia tanacetifolia | CNPS-EB: B | tansy phacelia | |
| Phalaris angusta | (historical-1912) | CNPS-EB: A1x | narrow canary grass |
| Phalaris arundinacea | CNPS-EB: A1 | reed canary grass | |
| Phalaris californica | (historical-1943) | CNPS-EB: A1x | California canary grass |
| Phalaris lemmonii | CNPS-EB: A1x | Lemmon's canary-grass | |
| Phoradendron leucarpum subsp. macrophyllum | (formerly P. serotinum subsp. macrophyllum, P. macrophyllum) | CNPS-EB: C | big leaf mistletoe |
| Phragmites australis | CNPS-EB: C | common reed | |
| Phyla lanceolata | CNPS-EB: A1x | fog-fruit | |
| Pickeringia montana var. montana | CNPS-EB: C | chaparral pea | |
| Pilularia americana | CNPS-EB: A1 | pillwort | |
| Pinus attenuata | CNPS-EB: A1 | knobcone pine | |
| Pinus coulteri | CNPS-EB: B | Coulter pine | |
| Piperia elegans subsp. elegans | CNPS-EB: C | coast piperia, elegant piperia | |
| Piperia elongata | CNPS-EB: C | chaparral orchid, wood rein-orchid, elongate piperia | |
| Piperia michaelii | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G3 CNDDB Rank: S3 | Michael's rein-orchid | |
| Piperia transversa | CNPS-EB: B | flat spurred piperia, transverse piperia | |
| Piperia unalascensis | CNPS-EB: A1 | Alaska piperia, slender-spire orchid | |
| Plagiobothrys acanthocarpus | CNPS-EB: B | adobe popcornflower, adobe allocarya | |
| Plagiobothrys canescens var. canescens | CNPS-EB: C | valley popcornflower | |
| Plagiobothrys chorisianus var. chorisianus | (historical-1890) | CNPS-EB: *A1x State CNPS: 1B.2 Global Rank: G3T1Q CNDDB Rank: S1 | Choris' popcornflower |
| Plagiobothrys diffusus | CNPS-EB: *A1x State CNPS: 1B.1 Global Rank: G1Q CNDDB Rank: S1 CESA Status: CE | San Francisco popcornflower | |
| Plagiobothrys fulvus var. campestris | CNPS-EB: B | field popcornflower, fulvous popcornflower | |
| Plagiobothrys glaber | CNPS-EB: *A1 State CNPS: 1A Global Rank: GX CNDDB Rank: SX | hairless popcornflower | |
| Plagiobothrys humistratus | CNPS-EB: A2 | low popcornflower, dwarf allocarya | |
| Plagiobothrys infectivus | CNPS-EB: A1x | dye popcornflower | |
| Plagiobothrys leptocladus | CNPS-EB: A1 | alkali plagiobothrys | |
| Plagiobothrys stipitatus var. stipitatus | (var. micranthus is more commo | CNPS-EB: C | showy great valley popcornflower, stipitate allocarya |
| Plagiobothrys tenellus | CNPS-EB: B | Pacific popcornflower, slender popcornflower | |
| Plagiobothrys trachycarpus | CNPS-EB: C | rough-nutlet popcornflower, rough-fruited allocarya | |
| Plagiobothrys undulatus | CNPS-EB: A2 | wavy-stemmed popcornflower, coast allocarya | |
| Plantago elongata | CNPS-EB: B | annual coast plantain | |
| Plantago maritima | CNPS-EB: A1x | Pacific seaside plantain | |
| Plantago subnuda | CNPS-EB: A2 | Mexican plantain | |
| Platanthera dilatata var. leucostachys | (formerly P. l.) (historical-1 | CNPS-EB: A1x | white-flowered bog-orchid |
| Platanus racemosa | CNPS-EB: C | western sycamore, California sycamore | |
| Plectritis congesta subsp. congesta | CNPS-EB: A1x | sea blush | |
| Pleuropogon californicus var. californicus | CNPS-EB: B | semaphore grass | |
| Pluchea odorata var. odorata | CNPS-EB: B | saltmarsh fleabane | |
| Poa douglasii | (historical-1882) | CNPS-EB: A1x | sanddune bluegrass |
| Poa howellii | CNPS-EB: A2 | Howell's bluegrass | |
| Pogogyne douglasii | (historical-1940) | CNPS-EB: A1x | Douglas' beardstyle, Douglas pogogyne |
| Pogogyne zizyphoroides | CNPS-EB: A2 | Sacramento beardstyle | |
| Polemonium carneum | CNPS-EB: *A1x State CNPS: 2B.2 Global Rank: G3G4 CNDDB Rank: S2 | Oregon polemonium, great polemonium | |
| Polygonum marinense | CNPS-EB: *A1x State CNPS: 3.1 Global Rank: G2Q CNDDB Rank: S2 | MARIN KNOTWEED | |
| Polypodium scouleri | CNPS-EB: A1 | leather-leaf fern | |
| Polystichum californicum | CNPS-EB: A1 | California sword fern | |
| Polystichum imbricans subsp. imbricans | CNPS-EB: A1x | rock sword fern | |
| Populus trichocarpa | (formerly P. balsamifera var. | CNPS-EB: C | black cottonwood |
| Potamogeton zosteriformis | (historical-1949) | CNPS-EB: *A1x State CNPS: 2B.2 Global Rank: G5 CNDDB Rank: S3 | eel-grass pondweed |
| Potentilla anserina subsp. pacifica | CNPS-EB: A2 | Pacific silverweed | |
| Primula clevelandii var. gracilis | (ssp. patulum is more common) | CNPS-EB: A1x | Padre's shooting star |
| Prosartes smithii | (formerly Disporum s.)(P. | CNPS-EB: A1x | large-flowered fairy bell |
| Prunella vulgaris var. lanceolata | (var. vulgaris is more common) | CNPS-EB: B | selfheal |
| Prunus emarginata | CNPS-EB: C | bitter cherry | |
| Prunus ilicifolia subsp. ilicifolia | CNPS-EB: B | islay, holly-leafed cherry | |
| Prunus subcordata | CNPS-EB: C | Pacific plum, Sierra plum | |
| Pseudognaphalium beneolens | (formerly Gnaphalium canescens | CNPS-EB: C | fragrant everlasting |
| Pseudognaphalium biolettii | (formerly Gnaphalium bicolor) | CNPS-EB: A1 | Bioletti's cudweed |
| Pseudognaphalium microcephalum | (formerly Gnaphalium canescens | CNPS-EB: A1 | white everlasting |
| Psilocarphus brevissimus var. brevissimus | CNPS-EB: B | dwarf woollyheads, dwarf woolly-marbles | |
| Psilocarphus brevissimus var. multiflorus | May not occur in EastBay (var. brevissimus is more common | CNPS-EB: *A1? State CNPS: 4.2 Global Rank: G4T3 CNDDB Rank: S3 | delta woolly-marbles |
| Psilocarphus chilensis | (formerly P. tenellus var. glo | CNPS-EB: A1 | round woolly marbles, round woolly-marbles |
| Psilocarphus oregonus | CNPS-EB: A2 | Oregon woollyheads, Oregon woolly-marbles | |
| Puccinellia nutkaensis | CNPS-EB: A1x | Alaska alkali grass | |
| Puccinellia nuttalliana | CNPS-EB: A1 | Nuttall's alkali grass | |
| Puccinellia simplex | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | little alkali grass | |
| Pyrrocoma racemosa var. racemosa | CNPS-EB: A1 | racemose pyrrocoma | |
| Quercus agrifolia | CNPS-EB: B | coast live oak, encina | |
| Quercus agrifolia x wislizeni | CNPS-EB: A1 | coast live oak x interior live oak | |
| Quercus berberidifolia | CNPS-EB: C | scrub oak | |
| Quercus durata var. durata | CNPS-EB: B | leather oak | |
| Quercus garryana var. garryana | CNPS-EB: B | Oregon oak | |
| Quercus garryana x dumosa | CNPS-EB: A1x | Oregon oak x scrub oak | |
| Quercus garryana x durata | CNPS-EB: A1 | Oregon oak x leather oak | |
| Quercus lobata | CNPS-EB: B | valley oak, roble | |
| Quercus palmeri | CNPS-EB: A2 | Palmer's oak | |
| Quercus parvula var. shrevei | CNPS-EB: A1 | island scrub oak | |
| Quercus wislizeni var. frutescens | CNPS-EB: C | shrubby interior live oak | |
| Quercus xchasei | CNPS-EB: B | Chase oak | |
| Quercus xeplingii | CNPS-EB: A1 | Oregon oak x blue oak | |
| Quercus xjolonensis | CNPS-EB: A1? | blue oak x valley oak | |
| Ranunculus canus var. canus | CNPS-EB: C | Sacramento Valley buttercup | |
| Ranunculus lobbii | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4 CNDDB Rank: S3 | Lobb's aquatic buttercup | |
| Ranunculus occidentalis var. occidentalis | CNPS-EB: B | western buttercup | |
| Ranunculus orthorhynchus var. bloomeri | CNPS-EB: A1x | Bloomer's buttercup | |
| Ranunculus orthorhynchus var. orthorhynchus | (historical-1895) | CNPS-EB: A1x | straight-beaked buttercup |
| Rhamnus crocea | CNPS-EB: C | spiny redberry | |
| Rhinotropis californica | (formerly Polygala californica) | CNPS-EB: A1 | California milkwort |
| Rhus aromatica | (formerly R. trilobata) | CNPS-EB: B | skunk bush, skunkbrush, squawbush |
| Ribes amarum | CNPS-EB: A1? | bitter gooseberry | |
| Ribes aureum var. gracillimum | CNPS-EB: A2 | golden currant | |
| Ribes divaricatum var. pubiflorum | CNPS-EB: C | straggle bush, straggly gooseberry | |
| Ribes malvaceum var. malvaceum | CNPS-EB: C | chaparral currant | |
| Ribes quercetorum | CNPS-EB: A2 | oakwoods gooseberry, oak gooseberry | |
| Ribes speciosum | CNPS-EB: A1 | fuchsia-flowered gooseberry | |
| Rigiopappus leptocladus | CNPS-EB: C | rigiopappus | |
| Romanzoffia californica | CNPS-EB: A1 | Suksdorf's romanzoffia | |
| Rorippa curvisiliqua | CNPS-EB: B | yellow cress | |
| Rorippa palustris subsp. palustris | CNPS-EB: B | marsh yellow-cress | |
| Rosa spithamea | CNPS-EB: C | coast ground rose, ground rose | |
| Rubus spectabilis | CNPS-EB: A1x | salmonberry | |
| Rumex californicus | (formerly R. salicifolius var. dentatus) | CNPS-EB: C | willow dock |
| Rumex crassus | (formerly R. salicifolius var. | CNPS-EB: A1 | willow dock |
| Rumex fueginus | CNPS-EB: A2 | golden dock | |
| Rumex occidentalis | CNPS-EB: A2 | western dock | |
| Rumex salicifolius | (formerly R. salicifolius var. salicifolius) | CNPS-EB: B | willow dock |
| Rumex salicifolius var. unknown | CNPS-EB: A2? | willow dock | |
| Rumex transitorius | CNPS-EB: B | willow dock | |
| Sabulina californica | (formerly Minuartia californica) | CNPS-EB: A1 | California sandwort |
| Sabulina pusilla | (formerly Minuartia pusilla) | CNPS-EB: A1 | annual sandwort, least sandwort |
| Sagina decumbens subsp. occidentalis | (S. apetala is more common) | CNPS-EB: B | western pearlwort |
| Sagittaria latifolia | CNPS-EB: A1 | arrowhead | |
| Salix breweri | CNPS-EB: A1x | Brewer's willow | |
| Salix gooddingii | CNPS-EB: B | Goodding's black willow | |
| Salix melanopsis | CNPS-EB: A1x | dusky willow | |
| Salix scouleriana | CNPS-EB: A2 | Scouler's willow | |
| Salvia carduacea | (historical-1946) | CNPS-EB: A1x | thistle sage |
| Salvia spathacea | CNPS-EB: A1 | California hummingbird sage, hummingbird sage | |
| Sambucus racemosa var. racemosa | CNPS-EB: B | red elderberry | |
| Samolus parviflorus | CNPS-EB: A1 | seaside brookweed, water-pimpernel | |
| Sanicula arctopoides | CNPS-EB: A1x | footsteps of spring, yellow mats | |
| Sanicula laciniata | CNPS-EB: A2 | coast sanicle | |
| Sanicula maritima | (historical-1936) | CNPS-EB: *A1x State CNPS: 1B.1 Global Rank: G2 CNDDB Rank: S2 CESA Status: CR | adobe sanicle |
| Sanicula saxatilis | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 CESA Status: CR | rock sanicle | |
| Schoenoplectus tabernaemontani | CNPS-EB: A1x | SOFT-STEM BULRUSH | |
| Scirpus microcarpus | CNPS-EB: C | small-fruited bulrush | |
| Scoliopus bigelovii | (historical-1900) | CNPS-EB: A1x | fetid adder's tongue, slink pod |
| Scribneria bolanderi | CNPS-EB: B | Scribner's grass | |
| Scutellaria californica | CNPS-EB: B | California skullcap | |
| Scutellaria galericulata | (historical-1949) | CNPS-EB: *A1x State CNPS: 2B.2 Global Rank: G5 CNDDB Rank: S2 | marsh skullcap |
| Scutellaria siphocampyloides | CNPS-EB: A1 | gray-leaved skullcap | |
| Scutellaria tuberosa | CNPS-EB: C | Dannie's skullcap | |
| Sedella pentandra | (formorely Parvisedum pentandr | CNPS-EB: A1 | Mount Hamilton sedella |
| Sedum radiatum subsp. radiatum | (formerly S. radiatum) | CNPS-EB: A2 | coast range stonecrop, star-fruited stonecrop |
| Sedum spathulifolium | CNPS-EB: B | broadleaf stonecrop, Pacific stonecrop | |
| Selaginella bigelovii | CNPS-EB: B | spike-moss | |
| Senecio aphanactis | CNPS-EB: *A1x State CNPS: 2B.2 Global Rank: G3 CNDDB Rank: S2 | chaparral ragwort, rayless ragwort | |
| Senecio aronicoides | CNPS-EB: C | rayless ragwort, California butterweed | |
| Senecio flaccidus var. douglasii | CNPS-EB: A2 | Douglas' threadleaf ragwort, shrubby butterweed | |
| Senecio hydrophilus | CNPS-EB: A1 | water ragwort, alkali-marsh ragwort, alkali-marsh butterweed | |
| Sequoia sempervirens | CNPS-EB: C | coast redwood | |
| Sesuvium verrucosum | CNPS-EB: B | western sea-purslane, sea-purslane | |
| Setaria parviflora | CNPS-EB: B | knotroot bristle grass, perennial foxtail | |
| Sidalcea diploscypha | CNPS-EB: A1 | fringed checkerbloom, fringed sidalcea | |
| Silene antirrhina | CNPS-EB: A1 | sleepy catchfly, snapdragon catchfly | |
| Silene laciniata subsp. californica | (formerly Silene c.) | CNPS-EB: B | Indian pink, California pink, California Indian pink |
| Silene lemmonii | CNPS-EB: A1 | LEMMON'S CATCHFLY | |
| Silene verecunda | CNPS-EB: A1 | San Francisco campion, Cuyamaca campion | |
| Sisyrinchium californicum | CNPS-EB: A1 | golden-eyed-grass | |
| Sium suave | CNPS-EB: A1 | hemlock water-parsnip | |
| Sparganium eurycarpum var. eurycarpum | CNPS-EB: A1 | bur-reed | |
| Sparganium eurycarpum var. greenei | CNPS-EB: A1 | Greene's bur-reed | |
| Spartina foliosa | CNPS-EB: B | California cord grass | |
| Spergularia macrotheca var. leucantha | CNPS-EB: A2 | large-flowered sand spurry | |
| Spergularia macrotheca var. longistyla | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G5T2 CNDDB Rank: S2 | large-flowered sand spurry | |
| Spergularia macrotheca var. macrotheca | CNPS-EB: A2 | large-flowered sand spurry | |
| Spergularia macrotheca var. unknown | CNPS-EB: A2? | large-flowered sand spurry | |
| Spiranthes porrifolia | CNPS-EB: A1x | western ladies' tresses | |
| Spiranthes romanzoffiana | CNPS-EB: A1 | hooded ladies' tresses | |
| Sporobolus airoides | CNPS-EB: A1 | alkali sacaton | |
| Stachys ajugoides | (var. rigida is more common) | CNPS-EB: A2 | bugle hedge nettle |
| Stachys albens | CNPS-EB: B | white hedge nettle | |
| Stachys bullata | CNPS-EB: A1? | California hedge nettle | |
| Stebbinsoseris heterocarpa | CNPS-EB: C | grassland silverpuffs, derived microseris | |
| Stellaria nitens | CNPS-EB: C | shining chickweed | |
| Stephanomeria elata | CNPS-EB: A2 | stephanomeria | |
| Stipa cernua | CNPS-EB: C | nodding needlegrass | |
| Stipa lemmonii var. lemmonii | (formerly Achnatherum lemmonii) | CNPS-EB: A2 | Lemmon needlegrass |
| Stipa lepida | CNPS-EB: C | foothill needlegrass | |
| Stipa pulchra | CNPS-EB: C | purple needlegrass | |
| Streptanthus albidus subsp. peramoenus | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2T2 CNDDB Rank: S2 | most beautiful jewel-flower | |
| Streptanthus breweri | CNPS-EB: A1 | Brewer's streptanthus | |
| Streptanthus glandulosus subsp. glandulosus | CNPS-EB: B | jewelflower | |
| Streptanthus hispidus | CNPS-EB: *A2 State CNPS: 1B.3 Global Rank: G2 CNDDB Rank: S2 | Mount Diablo jewelflower | |
| Stuckenia filiformis subsp. alpina | (formerly Potamogeton f.) | CNPS-EB: *A1x State CNPS: 2B.2 Global Rank: G5T5 CNDDB Rank: S2S3 | slender-leaved potamogeton |
| Stylocline gnaphaloides | CNPS-EB: B | everlasting neststraw, nest-straw | |
| Suaeda californica | (historical-1958) | CNPS-EB: *A1x State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 FESA Status: FE | California seablite |
| Suaeda nigra | (formerly S. moquinii) | CNPS-EB: B | bush seepweed |
| Symphyotrichum frondosum | (historical-1958) | CNPS-EB: A1x | short-rayed alkali aster |
| Symphyotrichum lanceolatum var. hesperium | (formerly Aster lanceolatus ss | CNPS-EB: A2 | marsh aster |
| Symphyotrichum lentum | (formerly Aster lentus) | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Suisun marsh aster |
| Symphyotrichum subulatum var. parviflorum | (formerly Aster subulatus var. | CNPS-EB: B | slim aster |
| Taxus brevifolia | CNPS-EB: A1 | PACIFIC YEW | |
| Tellima grandiflora | CNPS-EB: C | fringe cups | |
| Tetrapteron graciliflorum | CNPS-EB: C | hill sun cup | |
| Thermopsis californica var. californica | (historical-1929) | CNPS-EB: A1x | santa ynez false-lupine, false-lupine |
| Thysanocarpus laciniatus | CNPS-EB: B | lacepod | |
| Thysanocarpus radians | CNPS-EB: A1 | ribbed fringe pod | |
| Tolmiea diplomenziesii | CNPS-EB: A1x | pig-a-back plant | |
| Tonella tenella | CNPS-EB: B | small-flowered tonella | |
| Torreyochloa pallida var. pauciflora | CNPS-EB: A1x | weak manna grass | |
| Toxicoscordion paniculatum | May not occur in East Bay (formerly Zigadenus paniculatum) | CNPS-EB: A1? | panicled zygadene |
| Toxicoscordion venenosum var. venenosum | (formerly Zigadenus venenosus) | CNPS-EB: A1 | death-camas |
| Trianthema portulacastrum | CNPS-EB: A1x | horse purslane | |
| Trifolium barbigerum | CNPS-EB: A2 | bearded clover | |
| Trifolium cyathiferum | CNPS-EB: A1 | BOWL CLOVER | |
| Trifolium depauperatum var. depauperatum | (vars. amplectens and truncatu | CNPS-EB: B | dwarf sack clover |
| Trifolium dichotomum | CNPS-EB: C | branched indian clover | |
| Trifolium flavulum | (Included within T. fucatum in | CNPS-EB: A1 | bull clover |
| Trifolium fucatum | CNPS-EB: C | bull clover | |
| Trifolium gambelii | (Included within T. fucatum in | CNPS-EB: A1 | bull clover |
| Trifolium grayi | CNPS-EB: A1 | Gray's clover | |
| Trifolium hydrophilum | (vars. amplectens and truncatu | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | saline clover |
| Trifolium lilacinum | (Included within T. barbigerum | CNPS-EB: A1 | Gray's clover |
| Trifolium macraei | CNPS-EB: A1 | Macrae's clover, double-headed clover | |
| Trifolium obtusiflorum | CNPS-EB: B | clammy clover, creek clover | |
| Trifolium oliganthum | CNPS-EB: C | few-flowered clover | |
| Trifolium olivaceum | CNPS-EB: C | olive clover | |
| Trifolium wormskioldii | CNPS-EB: A1 | cow clover | |
| Triglochin concinna var. concinna | (T. maritima is more common) | CNPS-EB: A1 | seaside arrow-grass, slender arrow-grass |
| Triglochin maritima | CNPS-EB: C | common arrow-grass, seaside arrow-grass | |
| Triglochin scilloides | CNPS-EB: C | flowering-quillwort | |
| Triglochin striata | (T. maritima is more common) | CNPS-EB: B | three-ribbed arrow-grass |
| Trillium ovatum subsp. ovatum | CNPS-EB: A2 | white trillium | |
| Triodanis biflora | CNPS-EB: A2 | Venus' looking-glass | |
| Triphysaria versicolor subsp. faucibarbata | CNPS-EB: B | smooth owl's-clover | |
| Trisetum canescens | CNPS-EB: A2 | tall trisetum | |
| Triteleia peduncularis | CNPS-EB: A1x | long-rayed brodiaea | |
| Tropidocarpum capparideum | CNPS-EB: *A1 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 | caper-fruited tropidocarpum | |
| Tropidocarpum gracile | CNPS-EB: B | slender tropidocarpum | |
| Turritis glabra | CNPS-EB: B | tower mustard | |
| Vaccinium ovatum | CNPS-EB: C | California huckleberry | |
| Vancouveria planipetala | (historical-1898) | CNPS-EB: A1x | redwood ivy, inside-out flower |
| Verbena hastata | CNPS-EB: A1 | blue vervain | |
| Viburnum ellipticum | CNPS-EB: *A2 State CNPS: 2B.3 Global Rank: G4G5 CNDDB Rank: S3 | oval-leaved viburnum | |
| Vicia hassei | CNPS-EB: A2 | slender vetch | |
| Viola adunca subsp. adunca | CNPS-EB: A1 | western blue violet | |
| Viola douglasii | CNPS-EB: A2 | Douglas' violet, golden violet | |
| Viola glabella | CNPS-EB: A2 | stream violet, smooth yellow violet | |
| Viola purpurea subsp. purpurea | CNPS-EB: A1 | mountain violet | |
| Viola purpurea subsp. quercetorum | CNPS-EB: C | mountain violet | |
| Viola sempervirens | CNPS-EB: A2 | evergreen violet, redwood violet | |
| Viola sheltonii | CNPS-EB: A2 | Shelton's violet, fan violet | |
| Wolffia brasiliensis | CNPS-EB: *A1 State CNPS: 2B.3 Global Rank: G5 CNDDB Rank: S2 | BRAZILIAN WATERMEAL | |
| Wyethia glabra | (W. helenioides is more common | CNPS-EB: C | mule ears |
| Yabea microcarpa | California hedge parsley | ||
| Zeltnera davyi | (formerly Centaurium d.) | CNPS-EB: B | Davy's centaury, conchalagua |
| Zeltnera trichantha | (formerly Centaurium tricanthu | CNPS-EB: A1x | alkali centaury |