| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Acaena californica | (formerly A. pinnatifida var. californica) | CNPS-EB: C | California acaena |
| Acmispon junceus var. junceus | CNPS-EB: A1 | ||
| Adiantum aleuticum | (A. jordanii is more common) | CNPS-EB: A1 | five-finger fern |
| Agoseris heterophylla var. heterophylla | CNPS-EB: C | ||
| Alisma triviale | (formerly A. plantago-aquatica | CNPS-EB: C | water plantain |
| Amaranthus blitoides | CNPS-EB: C | procumbent pigweed, prostrate amaranth | |
| Amaranthus californicus | CNPS-EB: B | Californian amaranth | |
| Amelanchier utahensis | CNPS-EB: C | Utah service-berry | |
| Amsinckia lunaris | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G3 CNDDB Rank: S3 | bent-flowered fiddleneck | |
| Anisocarpus madioides | (formerly Madia m.) | CNPS-EB: B | woodland tarweed, woodland madia |
| Aralia californica | CNPS-EB: C | elk clover | |
| Arbutus menziesii | CNPS-EB: B | Pacific madrone | |
| Arctostaphylos crustacea subsp. crustacea | CNPS-EB: C | brittleleaf manzanita | |
| Arctostaphylos pallida | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 FESA Status: FT CESA Status: CE | pallid manzanita | |
| Arnica discoidea | CNPS-EB: B | rayless arnica | |
| Asarum caudatum | CNPS-EB: B | wild-ginger | |
| Asclepias speciosa | (A. californica is more common | CNPS-EB: B | showy milkweed, milkweed |
| Berula erecta | CNPS-EB: C | cutleaf water-parsnip | |
| Bidens frondosa | CNPS-EB: B | sticktight | |
| Calamagrostis rubescens | CNPS-EB: B | pine reed grass, pine grass | |
| Calochortus umbellatus | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G3? CNDDB Rank: S3? | Oakland star-tulip | |
| Camissoniopsis micrantha | CNPS-EB: C | small primrose | |
| Carex barbarae | CNPS-EB: C | whiteroot sedge, Santa Barbara sedge, St. Barbara's sedge | |
| Carex densa | CNPS-EB: B | dense sedge | |
| Carex gracilior | CNPS-EB: A1 | slender sedge | |
| Carex lenticularis var. lipocarpa | CNPS-EB: A1 | few-ribbed sedge | |
| Carex nebrascensis | CNPS-EB: B | Nebraska sedge | |
| Carex obnupta | CNPS-EB: B | slough sedge | |
| Carex praegracilis | CNPS-EB: C | black creeper sedge, freeway sedge, deer-bed sedge | |
| Carex subbracteata | CNPS-EB: B | small-bracted sedge | |
| Castilleja rubicundula subsp. lithospermoides | CNPS-EB: B | cream sacs | |
| Chrysolepis chrysophylla var. minor | CNPS-EB: A2 | golden chinquapin | |
| Cicuta douglasii | CNPS-EB: A2 | 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 quercetorum | CNPS-EB: A2 | brownie thistle | |
| Cirsium remotifolium var. odontolepis | CNPS-EB: A1 | remote-leaved thistle | |
| Clarkia gracilis subsp. gracilis | CNPS-EB: C | summer's darling | |
| Clarkia purpurea subsp. purpurea | (ssp. quadrivulnera is more co | CNPS-EB: A2 | purple clarkia |
| Clematis ligusticifolia | CNPS-EB: C | western virgin's bower, virgin's bower | |
| Collomia heterophylla | CNPS-EB: A1 | variable-leaf collomia | |
| Cordylanthus pilosus subsp. pilosus | CNPS-EB: B | hairy bird's-beak | |
| Cornus sericea subsp. sericea | CNPS-EB: C | American dogwood | |
| Cornus sericea subsp. unknown | CNPS-EB: C? | American dogwood | |
| Cryptantha torreyana var. pumila | CNPS-EB: B | Torrey's cryptantha | |
| Cuscuta californica var. californica | CNPS-EB: A2 | California dodder | |
| Cuscuta campestris | CNPS-EB: A1 | field dodder | |
| Cuscuta subinclusa | CNPS-EB: C | canyon dodder | |
| Cyperus erythrorhizos | CNPS-EB: B | red-rooted cyperus | |
| Danthonia californica | CNPS-EB: B | California oat grass | |
| Delphinium nudicaule | CNPS-EB: C | red larkspur, orange larkspur | |
| Dendromecon rigida | CNPS-EB: A2 | bush poppy | |
| Deschampsia cespitosa subsp. cespitosa | CNPS-EB: C | tufted hairgrass | |
| Deschampsia elongata | CNPS-EB: C | slender hair grass | |
| Dicentra formosa | CNPS-EB: A2 | Pacific bleeding heart, bleeding heart | |
| Dirca occidentalis | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | western leatherwood | |
| Echinodorus berteroi | CNPS-EB: A2 | burhead | |
| Eclipta prostrata | CNPS-EB: A1 | false daisy | |
| Eleocharis acicularis var. acicularis | CNPS-EB: B | needle spike-rush | |
| Elymus multisetus | CNPS-EB: C | big squirreltail | |
| Elymus xhansenii | CNPS-EB: B | Hansen squirreltail | |
| Eragrostis hypnoides | CNPS-EB: A2 | ||
| Erigeron petrophilus var. petrophilus | CNPS-EB: B | rock daisy | |
| Erigeron philadelphicus var. philadelphicus | CNPS-EB: C | fleabane | |
| Eryngium jepsonii | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | ||
| Euphorbia serpillifolia subsp. serpillifolia | CNPS-EB: C | thyme-leaved spurge | |
| 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 rubra | CNPS-EB: C | red fescue | |
| Fraxinus latifolia | CNPS-EB: B | Oregon ash | |
| Galium triflorum | CNPS-EB: C | sweet-scented bedstraw | |
| Garrya elliptica | CNPS-EB: B | silk tassel bush | |
| Githopsis specularioides | CNPS-EB: B | common bluecup | |
| Gruvelia pusilla | (formerly Pectocarya pusilla) | CNPS-EB: B | little pectocarya |
| Helianthella castanea | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Diablo helianthella | |
| Hemizonia congesta subsp. lutescens | CNPS-EB: B | hayfield tarweed | |
| Heterotheca sessiliflora subsp. bolanderi | (H. s. ssp. echioides is more | CNPS-EB: C | Bolander goldenaster |
| Hieracium albiflorum | CNPS-EB: C | white hawkweed | |
| Hoita macrostachya | CNPS-EB: B | California hemp | |
| Horkelia californica var. frondosa | CNPS-EB: B | leafy horkelia | |
| Iris douglasiana | CNPS-EB: B | Douglas iris | |
| Isolepis cernua | (formerly Scirpus cernuus) | CNPS-EB: C | low club-rush |
| Juncus phaeocephalus var. phaeocephalus | CNPS-EB: B | brownheaded rush | |
| Koeleria macrantha | CNPS-EB: C | june grass | |
| Kopsiopsis strobilacea | (formerly Boschniakia strobilacea) | CNPS-EB: A1 | California ground-cone |
| Lathyrus jepsonii var. californicus | CNPS-EB: B | buff pea | |
| Layia gaillardioides | CNPS-EB: A2 | woodland layia | |
| Layia hieracioides | CNPS-EB: C | tall layia | |
| Layia platyglossa | CNPS-EB: B | tidy-tips | |
| Leptochloa fusca subsp. fascicularis | CNPS-EB: A1 | bearded sprangletop | |
| Leptosiphon androsaceus | (formerly Linanthus a.) | CNPS-EB: C | common linanthus, common leptosiphon |
| Leptosiphon parviflorus | (formerly Linanthus p.) | CNPS-EB: B | small-flowered linanthus, small-flowered leptosiphon |
| Ligusticum apiifolium | CNPS-EB: A2 | Pacific lovage | |
| Lilium pardalinum subsp. pardalinum | CNPS-EB: A1 | leopard lily | |
| Lupinus affinis | CNPS-EB: A1 | lupine | |
| Lupinus arboreus | CNPS-EB: A2 | yellow bush lupine | |
| Madia exigua | CNPS-EB: C | ||
| Malacothrix floccifera | CNPS-EB: C | woolly malacothrix | |
| Marah oregana | CNPS-EB: C | coast man-root | |
| Meconella oregana | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G2G3 CNDDB Rank: S2 | Oregon meconella | |
| Melica californica | CNPS-EB: C | California melic | |
| Microseris douglasii subsp. tenella | (subsp douglasii is more common) | CNPS-EB: A2 | silver puffs |
| Morella californica | (formerly Myrica c.) | CNPS-EB: B | wax myrtle |
| Navarretia mellita | CNPS-EB: C | honey-scented navarretia | |
| Nuttallanthus texanus | CNPS-EB: A2 | blue toadflax | |
| Oxalis pilosa | (formerly O. albicans ssp. p.) | CNPS-EB: B | hairy wood-sorrel |
| 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 | |
| Persicaria lapathifolia | (formerly Polygonum lapathifol | CNPS-EB: B | willow weed |
| Petasites frigidus var. palmatus | CNPS-EB: A1 | western sweet coltsfoot, coltsfoot | |
| Pickeringia montana var. montana | CNPS-EB: C | chaparral pea | |
| Pinus attenuata | CNPS-EB: A1 | knobcone 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 | |
| Platanus racemosa | CNPS-EB: C | western sycamore, California sycamore | |
| Populus trichocarpa | (formerly P. balsamifera var. | CNPS-EB: C | black cottonwood |
| Prunella vulgaris var. lanceolata | (var. vulgaris is more common) | CNPS-EB: B | selfheal |
| Prunus emarginata | CNPS-EB: C | bitter cherry | |
| Prunus subcordata | CNPS-EB: C | Pacific plum, Sierra plum | |
| Pseudognaphalium beneolens | (formerly Gnaphalium canescens | CNPS-EB: C | fragrant everlasting |
| Quercus garryana var. garryana | CNPS-EB: B | Oregon oak | |
| Quercus lobata | CNPS-EB: B | valley oak, roble | |
| 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 | |
| Ranunculus lobbii | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4 CNDDB Rank: S3 | Lobb's aquatic buttercup | |
| Rhamnus crocea | CNPS-EB: C | spiny redberry | |
| Rhinotropis californica | (formerly Polygala californica) | CNPS-EB: A1 | California milkwort |
| Ribes divaricatum var. pubiflorum | CNPS-EB: C | straggle bush, straggly gooseberry | |
| 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 | |
| Rumex fueginus | CNPS-EB: A2 | golden dock | |
| Rumex salicifolius | (formerly R. salicifolius var. salicifolius) | CNPS-EB: B | willow dock |
| Rumex transitorius | CNPS-EB: B | willow dock | |
| Salix scouleriana | CNPS-EB: A2 | Scouler's willow | |
| Sanicula laciniata | CNPS-EB: A2 | coast sanicle | |
| Scirpus microcarpus | CNPS-EB: C | small-fruited bulrush | |
| Scutellaria californica | CNPS-EB: B | California skullcap | |
| Scutellaria tuberosa | CNPS-EB: C | Dannie's skullcap | |
| Sedum spathulifolium | CNPS-EB: B | broadleaf stonecrop, Pacific stonecrop | |
| Senecio aronicoides | CNPS-EB: C | rayless ragwort, California butterweed | |
| Sequoia sempervirens | CNPS-EB: C | coast redwood | |
| Silene laciniata subsp. californica | (formerly Silene c.) | CNPS-EB: B | Indian pink, California pink, California Indian pink |
| Sisyrinchium californicum | CNPS-EB: A1 | golden-eyed-grass | |
| Stebbinsoseris heterocarpa | CNPS-EB: C | grassland silverpuffs, derived microseris | |
| Stipa cernua | CNPS-EB: C | nodding needlegrass | |
| Stipa lepida | CNPS-EB: C | foothill needlegrass | |
| Stipa pulchra | CNPS-EB: C | purple needlegrass | |
| Streptanthus glandulosus subsp. glandulosus | CNPS-EB: B | jewelflower | |
| Tetrapteron graciliflorum | CNPS-EB: C | hill sun cup | |
| Trifolium fucatum | CNPS-EB: C | bull clover | |
| Trifolium obtusiflorum | CNPS-EB: B | clammy clover, creek clover | |
| Triglochin scilloides | CNPS-EB: C | flowering-quillwort | |
| Trillium ovatum subsp. ovatum | CNPS-EB: A2 | white trillium | |
| Tropidocarpum gracile | CNPS-EB: B | slender tropidocarpum | |
| Turritis glabra | CNPS-EB: B | tower mustard | |
| Vaccinium ovatum | CNPS-EB: C | California huckleberry | |
| Viola glabella | CNPS-EB: A2 | stream violet, smooth yellow violet | |
| Wyethia glabra | (W. helenioides is more common | CNPS-EB: C | mule ears |
| Acmispon junceus var. biolettii | (historical-1945) | CNPS-EB: A1x | rush lotus |
| 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 |
| Agrostis hallii | CNPS-EB: A2 | Hall's bent grass | |
| Alopecurus saccatus | CNPS-EB: B | Howell's meadow foxtail | |
| Amsinckia eastwoodiae | CNPS-EB: A2 | Eastwood's fiddleneck | |
| Androsace elongata subsp. acuta | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G5?T3T4 CNDDB Rank: S3S4 | California androsace | |
| Anthoxanthum occidentale | (historical-198? but not seen | CNPS-EB: A1x | California sweet grass, vanilla grass |
| Aphyllon purpureum | CNPS-EB: C | naked broomrape | |
| Apiastrum angustifolium | CNPS-EB: C | wild celery | |
| Apocynum androsaemifolium | CNPS-EB: A2 | bitter dogbane, dogbane | |
| Arctostaphylos glandulosa subsp. glandulosa | CNPS-EB: B | Eastwood manzanita | |
| Arctostaphylos glandulosa subsp. mollis | CNPS-EB: A1x | ||
| Calamagrostis koelerioides | 2 questionable ID sites. Needs field research | CNPS-EB: A1? | tufted pine grass |
| Calochortus pulchellus | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Mount Diablo fairy-lantern | |
| Calycadenia multiglandulosa | CNPS-EB: A2 | sticky calycadenia | |
| Castilleja subinclusa subsp. franciscana | CNPS-EB: A1 | Franciscan indian paintbrush | |
| Castilleja wightii | CNPS-EB: B | Wight's indian paintbrush | |
| Ceanothus thyrsiflorus var. thyrsiflorus | CNPS-EB: B | blue blossom, California lilac | |
| Claytonia gypsophiloides | CNPS-EB: B | coast range montia | |
| Collinsia sparsiflora var. unknown | CNPS-EB: C? | few-flowered blue-eyed Mary | |
| Corallorhiza striata | (C. maculata is more common) | CNPS-EB: A1x | striped coralroot |
| Crassula aquatica | CNPS-EB: B | water pygmy-weed | |
| Crocanthemum scoparium var. vulgare | (formerly Helianthemum scoparium var. vulgare) | CNPS-EB: B | peak rush-rose |
| Delphinium hesperium subsp. hesperium | CNPS-EB: B | western larkspur | |
| Deschampsia cespitosa subsp. holciformis | CNPS-EB: B | tufted hairgrass | |
| Dichelostemma volubile | 2 questionable ID sites. Needs field research | CNPS-EB: A1? | twining brodiaea, snake lily |
| Elatine brachysperma | CNPS-EB: A1 | waterwort | |
| Elatine californica | CNPS-EB: A2 | waterwort | |
| Elymus trachycaulus subsp. trachycaulus | CNPS-EB: A1 | slender wheat grass | |
| Epilobium campestre | CNPS-EB: B | smooth boisduvalia | |
| Epilobium ciliatum subsp. watsonii | (ssp. ciliatum is more common) | CNPS-EB: A1 | San Francisco willowherb |
| Ericameria arborescens | CNPS-EB: B | golden-fleece | |
| Eryngium armatum | CNPS-EB: A1 | coastal button-celery, coast coyote-thistle | |
| Festuca octoflora | CNPS-EB: A2 | sixweeks grass, slender fescue | |
| Galium trifidum subsp. columbianum | CNPS-EB: A1 | trifid bedstraw | |
| 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 |
| Holocarpha macradenia | CNPS-EB: *A1 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 FESA Status: FT CESA Status: CE | Santa Cruz tarplant | |
| Holozonia filipes | CNPS-EB: A2 | whitecrown, holozonia | |
| Hosackia oblongifolia var. oblongifolia | Unclear if it occurs in the East Bay | CNPS-EB: A1? | narrow-leaved lotus |
| Isoetes howellii | CNPS-EB: A1 | Howell's quillwort | |
| Lasthenia glabrata subsp. glabrata | CNPS-EB: A2 | yellow-ray goldfields | |
| Lepidium latipes | CNPS-EB: B | dwarf peppergrass | |
| Lythrum californicum | CNPS-EB: B | California loosestrife | |
| Meconella californica | CNPS-EB: A1x | California meconella | |
| Microseris elegans | CNPS-EB: A1 | elegant microseris | |
| Monolopia major | CNPS-EB: B | cupped monolopia | |
| Montia fontana | CNPS-EB: C | water chickweed, blinks, water chickweed | |
| Navarretia pubescens | CNPS-EB: C | downy navarretia | |
| Nicotiana quadrivalvis | CNPS-EB: B | indian tobacco | |
| Papaver californicum | CNPS-EB: B | fire poppy | |
| Phacelia malvifolia var. malvifolia | CNPS-EB: A2 | stinging phacelia | |
| Phoradendron leucarpum subsp. macrophyllum | (formerly P. serotinum subsp. macrophyllum, P. macrophyllum) | CNPS-EB: C | big leaf mistletoe |
| Plagiobothrys humistratus | CNPS-EB: A2 | low popcornflower, dwarf allocarya | |
| 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 | |
| Poa howellii | CNPS-EB: A2 | Howell's bluegrass | |
| Polystichum imbricans subsp. imbricans | CNPS-EB: A1x | rock sword fern | |
| Prunus ilicifolia subsp. ilicifolia | CNPS-EB: B | islay, holly-leafed cherry | |
| Psilocarphus chilensis | (formerly P. tenellus var. glo | CNPS-EB: A1 | round woolly marbles, round woolly-marbles |
| Quercus berberidifolia | CNPS-EB: C | scrub oak | |
| Quercus xjolonensis | CNPS-EB: A1? | blue oak x valley oak | |
| Rhus aromatica | (formerly R. trilobata) | CNPS-EB: B | skunk bush, skunkbrush, squawbush |
| Rumex salicifolius var. unknown | CNPS-EB: A2? | willow dock | |
| Sabulina californica | (formerly Minuartia californica) | CNPS-EB: A1 | California sandwort |
| Sagittaria latifolia | CNPS-EB: A1 | arrowhead | |
| Salix gooddingii | CNPS-EB: B | Goodding's black willow | |
| Stellaria nitens | CNPS-EB: C | shining chickweed | |
| Stephanomeria elata | CNPS-EB: A2 | stephanomeria | |
| Symphyotrichum subulatum var. parviflorum | (formerly Aster subulatus var. | CNPS-EB: B | slim aster |
| Tellima grandiflora | CNPS-EB: C | fringe cups | |
| Trifolium oliganthum | CNPS-EB: C | few-flowered clover | |
| Triodanis biflora | CNPS-EB: A2 | Venus' looking-glass | |
| Zeltnera davyi | (formerly Centaurium d.) | CNPS-EB: B | Davy's centaury, conchalagua |