| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Agoseris heterophylla var. cryptopleura | CNPS-EB: B | ||
| Agoseris heterophylla var. heterophylla | CNPS-EB: C | ||
| Agoseris retrorsa | CNPS-EB: A2 | spear-leaved agoseris | |
| Allium amplectens | CNPS-EB: A2 | narrow-leaved onion | |
| Allium bolanderi var. bolanderi | CNPS-EB: A1 | Bolander's onion | |
| Allium sharsmithiae | CNPS-EB: *A2 State CNPS: 1B.3 Global Rank: G2 CNDDB Rank: S2 | Sharsmith's onion | |
| Allophyllum gilioides subsp. gilioides | CNPS-EB: A2 | straggling gilia | |
| Allophyllum gilioides subsp. violaceum | (ssp. gilioides is more common | CNPS-EB: B | straggling gilia |
| Amelanchier utahensis | CNPS-EB: C | Utah service-berry | |
| 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 | |
| Aquilegia eximia | (A. formosa is more common) | CNPS-EB: A2 | Van Houtte's columbine |
| Arctostaphylos glauca | CNPS-EB: C | big-berried manzanita | |
| Calystegia malacophylla subsp. pedicellata | CNPS-EB: A2 | woolly morning-glory | |
| Camissoniopsis intermedia | 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 | |
| Ceanothus leucodermis | CNPS-EB: A2 | chaparral whitethorn | |
| Chaenactis glabriuscula var. heterocarpha | CNPS-EB: A1 | inner coast range pincushion, yellow pincushion | |
| Chaenactis glabriuscula var. megacephala | CNPS-EB: A1 | yellow pincushion | |
| Chlorogalum pomeridianum var. minus | CNPS-EB: *A1 State CNPS: 1B.2 Global Rank: G5T3 CNDDB Rank: S3 | DWARF SOAPROOT | |
| Chorizanthe polygonoides var. polygonoides | CNPS-EB: A1 | knotweed spineflower | |
| Cirsium cymosum var. cymosum | CNPS-EB: C | peregrine thistle | |
| Cirsium fontinale var. campylon | CNPS-EB: *A1 State CNPS: 1B.2 Global Rank: G2T2 CNDDB Rank: S2 | Mount Hamilton fountain thistle | |
| Clarkia modesta | CNPS-EB: A2 | modest clarkia | |
| Claytonia gypsophiloides | CNPS-EB: B | coast range montia | |
| Cordylanthus rigidus subsp. rigidus | CNPS-EB: A1 | stiffly-branched bird's-beak | |
| Cryptantha clevelandii var. florosa | CNPS-EB: B | Cleveland's cryptantha | |
| Delphinium californicum subsp. interius | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G3T3 CNDDB Rank: S3 | Hospital Canyon larkspur | |
| Diplacus douglasii | (formerly Mimulus d.) | CNPS-EB: A2 | Douglas monkeyflower |
| Diplacus rattanii | (formerly Mimulus rattanii) | CNPS-EB: A2 | Rattan monkeyflower |
| Downingia cuspidata | CNPS-EB: A1 | cuspidate downingia | |
| Enemion stipitatum | (formerly Isopyrum s.) | CNPS-EB: A2 | Siskiyou rue-anemone |
| Eriastrum abramsii | CNPS-EB: A2 | Abram's eriastrum | |
| Eriogonum covilleanum | CNPS-EB: A2 | Coville's wild buckwheat, Coville's eriogonum | |
| Eriogonum luteolum var. luteolum | CNPS-EB: A2 | golden-carpet wild buckwheat, golden carpet | |
| Eriogonum roseum | CNPS-EB: A2 | wand wild buckwheat, virgate 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 |
| Eriophyllum jepsonii | CNPS-EB: *A2 State CNPS: 4.3 Global Rank: G3 CNDDB Rank: S3 | Jepson's woolly sunflower | |
| Eschscholzia caespitosa | CNPS-EB: A1 | tufted poppy | |
| Festuca octoflora | CNPS-EB: A2 | sixweeks grass, slender fescue | |
| Galium andrewsii subsp. gatense | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G5T3 CNDDB Rank: S3 | phlox-leaf serpentine bedstraw, serpentine bedstraw | |
| Garrya flavescens | CNPS-EB: A2 | silk tassel bush | |
| Gilia tricolor subsp. diffusa | CNPS-EB: B | birds-eye gilia | |
| Githopsis specularioides | CNPS-EB: B | common bluecup | |
| Gruvelia pusilla | (formerly Pectocarya pusilla) | CNPS-EB: B | little pectocarya |
| Helianthella californica var. californica | CNPS-EB: A2 | California helianthella | |
| Hesperocyparis sargentii | (formerly Cupressus s.) | CNPS-EB: A1 | Sargent cypress |
| Hesperolinon clevelandii | CNPS-EB: A1 | Cleveland's dwarf flax | |
| Juniperus californica | CNPS-EB: C | California juniper | |
| Lasthenia microglossa | CNPS-EB: A2 | small-ray goldfields | |
| 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 pygmaeus subsp. continentalis | (formerly Linanthus p. ssp. c. | CNPS-EB: B | pygmy linanthus, pygmy leptosiphon |
| Lessingia nemaclada | CNPS-EB: A2 | slender-stemmed lessignia | |
| Lessingia tenuis | CNPS-EB: *A2 State CNPS: 4.3 Global Rank: G4 CNDDB Rank: S4 | spring lessingia | |
| Madia exigua | CNPS-EB: C | ||
| Malacothrix clevelandii | CNPS-EB: A2 | Cleveland's malacothrix | |
| Malacothrix floccifera | CNPS-EB: C | woolly malacothrix | |
| Melica californica | CNPS-EB: C | California melic | |
| Monardella douglasii | CNPS-EB: A2 | fenestra monardella, Fenestra monardella | |
| Myosurus minimus subsp. minimus | CNPS-EB: C | common mouse-tail | |
| Navarretia pubescens | CNPS-EB: C | downy navarretia | |
| Nemophila parviflora var. parviflora | CNPS-EB: B | small-flowered nemophila | |
| Packera breweri | (formerly Senecio b.) | CNPS-EB: C | Brewer's ragwort, Brewer's butterweed |
| Pediomelum californicum | CNPS-EB: A2 | indian breadroot | |
| Perideridia californica | CNPS-EB: C | California yampah | |
| Perideridia oregana | CNPS-EB: A2 | yampah | |
| Phacelia breweri | CNPS-EB: C | Brewer's phacelia | |
| Phacelia divaricata | CNPS-EB: B | divaricate phacelia | |
| Phacelia ramosissima | CNPS-EB: B | branching phacelia | |
| Pinus coulteri | CNPS-EB: B | Coulter pine | |
| Piperia michaelii | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G3 CNDDB Rank: S3 | Michael's rein-orchid | |
| Poa howellii | CNPS-EB: A2 | Howell's bluegrass | |
| Quercus berberidifolia | CNPS-EB: C | scrub oak | |
| Quercus durata var. durata | CNPS-EB: B | leather oak | |
| Quercus lobata | CNPS-EB: B | valley oak, roble | |
| Quercus wislizeni var. frutescens | CNPS-EB: C | shrubby interior live oak | |
| Ranunculus canus var. canus | CNPS-EB: C | Sacramento Valley buttercup | |
| Ribes malvaceum var. malvaceum | CNPS-EB: C | chaparral currant | |
| Ribes quercetorum | CNPS-EB: A2 | oakwoods gooseberry, oak gooseberry | |
| Rigiopappus leptocladus | CNPS-EB: C | rigiopappus | |
| Scribneria bolanderi | CNPS-EB: B | Scribner's grass | |
| Scutellaria tuberosa | CNPS-EB: C | Dannie's skullcap | |
| Senecio aronicoides | CNPS-EB: C | rayless ragwort, California butterweed | |
| Stellaria nitens | CNPS-EB: C | shining chickweed | |
| Streptanthus breweri | CNPS-EB: A1 | Brewer's streptanthus | |
| Streptanthus glandulosus subsp. glandulosus | CNPS-EB: B | jewelflower | |
| Tetrapteron graciliflorum | CNPS-EB: C | hill sun cup | |
| Tonella tenella | CNPS-EB: B | small-flowered tonella | |
| Toxicoscordion venenosum var. venenosum | (formerly Zigadenus venenosus) | CNPS-EB: A1 | death-camas |
| Trifolium dichotomum | CNPS-EB: C | branched indian clover | |
| Trifolium obtusiflorum | CNPS-EB: B | clammy clover, creek clover | |
| Trifolium oliganthum | CNPS-EB: C | few-flowered clover | |
| Wyethia glabra | (W. helenioides is more common | CNPS-EB: C | mule ears |
| Acanthomintha lanceolata | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4 CNDDB Rank: S4 | Santa Clara thornmint | |
| 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 |
| Allium falcifolium | CNPS-EB: A2 | sickle-leaved onion | |
| Anemopsis californica | CNPS-EB: B | yerba mansa, lizard tail | |
| Aphyllon purpureum | CNPS-EB: C | naked broomrape | |
| Apiastrum angustifolium | CNPS-EB: C | wild celery | |
| Arctostaphylos manzanita subsp. manzanita | CNPS-EB: A2 | common manzanita | |
| Arnica discoidea | CNPS-EB: B | rayless arnica | |
| 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 | |
| Berberis aquifolium var. dictyota | CNPS-EB: A1 | Jepson's mahonia | |
| Berula erecta | CNPS-EB: C | cutleaf water-parsnip | |
| Blennosperma nanum var. nanum | CNPS-EB: C | blennosperma | |
| Calochortus invenustus | CNPS-EB: A1x | plain mariposa-lily | |
| Camissoniopsis micrantha | CNPS-EB: C | small primrose | |
| Campanula sharsmithiae | CNPS-EB: *A1x State CNPS: 1B.2 Global Rank: G1G2 CNDDB Rank: S1S2 | SHARSMITH'S HAREBELL | |
| Carex praegracilis | CNPS-EB: C | black creeper sedge, freeway sedge, deer-bed sedge | |
| Carex serratodens | CNPS-EB: C | saw-toothed sedge, bifid sedge | |
| Castilleja subinclusa subsp. subinclusa | CNPS-EB: A1 | long-leaved indian paintbrush | |
| Chaenactis glabriuscula var. glabriuscula | CNPS-EB: A1 | yellow pincushion | |
| 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 gracilis subsp. gracilis | CNPS-EB: C | summer's darling | |
| Claytonia exigua subsp. exigua | CNPS-EB: C | common montia | |
| Clematis ligusticifolia | CNPS-EB: C | western virgin's bower, virgin's bower | |
| Collinsia bartsiifolia var. stricta | Highly unlikely it occurs here. Only 1 population but ID is very questionable | 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 | |
| Crocidium multicaule | CNPS-EB: A1 | spring gold | |
| Cryptantha corollata | formerly C. decipiens. Also includes previous records for C. rattanii | CNPS-EB: A2 | COAST RANGE CRYPTANTHA |
| Cryptantha juniperensis | (formerly C. nevadensis var. rigida) | CNPS-EB: A1 | Nevada cryptantha |
| Cryptantha nemaclada | CNPS-EB: A1x | Colusa cryptantha | |
| Cuscuta californica var. californica | CNPS-EB: A2 | California dodder | |
| Delphinium californicum subsp. californicum | CNPS-EB: B | coast larkspur, California larkspur | |
| Delphinium nudicaule | CNPS-EB: C | red larkspur, orange larkspur | |
| Delphinium parryi subsp. parryi | CNPS-EB: A2 | Parry's larkspur | |
| Deschampsia danthonioides | CNPS-EB: C | annual hair grass | |
| Dudleya cymosa subsp. paniculata | CNPS-EB: C | spreading dudleya | |
| Eleocharis parishii | CNPS-EB: A1 | Dombey's spike-rush | |
| Elymus multisetus | CNPS-EB: C | big squirreltail | |
| Elymus trachycaulus subsp. trachycaulus | CNPS-EB: A1 | slender wheat grass | |
| Epilobium campestre | CNPS-EB: B | smooth boisduvalia | |
| Ericameria nauseosa var. mohavensis | CNPS-EB: A2 | Mojave rabbitbrush, rubber rabbitbrush | |
| Eriogonum angulosum | CNPS-EB: B | angle-stem wild buckwheat, angle-stemmed eriogonum | |
| Eriogonum gracile var. gracile | CNPS-EB: C | slender woolly wild buckwheat, slender buckwheat | |
| Eriogonum wrightii var. trachygonum | CNPS-EB: C | rough-node bastard-sage, Wright's eriogonum | |
| Eriophyllum lanatum var. achilleoides | CNPS-EB: C | woolly sunflower | |
| 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 | |
| Forestiera pubescens | CNPS-EB: B | desert olive | |
| Frangula californica subsp. tomentella | (formerly Rhamnus t.) | CNPS-EB: C | hoary coffeeberry |
| 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 | |
| Garrya congdonii | CNPS-EB: A1x | Congdon's silk-tassel | |
| Garrya elliptica | CNPS-EB: B | silk tassel bush | |
| Garrya fremontii | CNPS-EB: A1x | silk tassel bush | |
| 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 | |
| Helianthella castanea | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Diablo helianthella | |
| Helianthus californicus | CNPS-EB: C | California sunflower | |
| Hesperolinon disjunctum | CNPS-EB: A1 | 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 |
| Heterocodon rariflorum | CNPS-EB: A1 | heterocodon | |
| Hoita macrostachya | CNPS-EB: B | California hemp | |
| Holozonia filipes | CNPS-EB: A2 | whitecrown, holozonia | |
| Hordeum brachyantherum subsp. californicum | (ssp. brachyantherum is more common | CNPS-EB: A2 | California barley |
| Hydrophyllum occidentale | CNPS-EB: A1 | western waterleaf | |
| Juncus mexicanus | CNPS-EB: C | Mexican rush | |
| Juncus oxymeris | CNPS-EB: A1 | pointed rush | |
| Koeleria macrantha | CNPS-EB: C | june grass | |
| 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 pectinata var. tenuipes | CNPS-EB: A2 | valley lessingia | |
| Linanthus dichotomus subsp. meridianus | CNPS-EB: A1 | ||
| Lithophragma parviflorum var. parviflorum | CNPS-EB: B | prairie star | |
| Lomatium caruifolium var. caruifolium | CNPS-EB: B | caraway-leaved lomatium | |
| Madia anomala | CNPS-EB: A1x | plump-seeded madia | |
| Malacothamnus fremontii | CNPS-EB: C | white-coat mallow | |
| Marah oregana | CNPS-EB: C | coast man-root | |
| Mentzelia lindleyi | CNPS-EB: B | Lindley's blazing star | |
| Microseris douglasii subsp. tenella | (subsp douglasii is more common) | CNPS-EB: A2 | silver puffs |
| Mimetanthe pilosa | (formerly Mimulus pilosus) | CNPS-EB: B | downy monkeyflower |
| Montia fontana | CNPS-EB: C | water chickweed, blinks, water chickweed | |
| Myriopteris covillei | CNPS-EB: C | Coville's lip fern | |
| Myriopteris intertexta | CNPS-EB: B | coastal lip fern | |
| Nemophila pedunculata | CNPS-EB: B | meadow nemophila | |
| Nicotiana quadrivalvis | CNPS-EB: B | indian tobacco | |
| Osmorhiza brachypoda | CNPS-EB: C | California cicely | |
| Penstemon heterophyllus var. heterophyllus | CNPS-EB: B | chaparral penstemon | |
| Penstemon heterophyllus var. purdyi | CNPS-EB: A2 | foothill penstemon | |
| Piperia elegans subsp. elegans | CNPS-EB: C | coast piperia, elegant piperia | |
| Piperia transversa | CNPS-EB: B | flat spurred piperia, transverse piperia | |
| Plagiobothrys acanthocarpus | CNPS-EB: B | adobe popcornflower, adobe allocarya | |
| Plagiobothrys canescens var. canescens | CNPS-EB: C | valley popcornflower | |
| Plagiobothrys tenellus | CNPS-EB: B | Pacific popcornflower, slender popcornflower | |
| Platanus racemosa | CNPS-EB: C | western sycamore, California sycamore | |
| Plectritis congesta subsp. congesta | CNPS-EB: A1x | sea blush | |
| Primula clevelandii var. gracilis | (ssp. patulum is more common) | CNPS-EB: A1x | Padre's shooting star |
| Prunus subcordata | CNPS-EB: C | Pacific plum, Sierra plum | |
| Quercus garryana var. garryana | CNPS-EB: B | Oregon oak | |
| Ribes aureum var. gracillimum | CNPS-EB: A2 | golden currant | |
| Rumex salicifolius var. unknown | CNPS-EB: A2? | willow dock | |
| Sabulina pusilla | (formerly Minuartia pusilla) | CNPS-EB: A1 | annual sandwort, least sandwort |
| Salix breweri | CNPS-EB: A1x | Brewer's willow | |
| Sedella pentandra | (formorely Parvisedum pentandr | CNPS-EB: A1 | Mount Hamilton sedella |
| Selaginella bigelovii | CNPS-EB: B | spike-moss | |
| Silene verecunda | CNPS-EB: A1 | San Francisco campion, Cuyamaca campion | |
| Stachys albens | CNPS-EB: B | white hedge nettle | |
| Stebbinsoseris heterocarpa | CNPS-EB: C | grassland silverpuffs, derived microseris | |
| Stipa cernua | CNPS-EB: C | nodding needlegrass | |
| Stipa lemmonii var. lemmonii | (formerly Achnatherum lemmonii) | CNPS-EB: A2 | Lemmon needlegrass |
| Stipa pulchra | CNPS-EB: C | purple needlegrass | |
| Stylocline gnaphaloides | CNPS-EB: B | everlasting neststraw, nest-straw | |
| Thysanocarpus laciniatus | CNPS-EB: B | lacepod | |
| Trifolium olivaceum | CNPS-EB: C | olive clover | |
| Triteleia peduncularis | CNPS-EB: A1x | long-rayed brodiaea | |
| Viola purpurea subsp. purpurea | CNPS-EB: A1 | mountain violet | |
| Viola purpurea subsp. quercetorum | CNPS-EB: C | mountain violet | |
| Viola sheltonii | CNPS-EB: A2 | Shelton's violet, fan violet |