| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Allium amplectens | CNPS-EB: A2 | narrow-leaved onion | |
| Allium bolanderi var. bolanderi | CNPS-EB: A2 | Bolander's onion | |
| Allium sharsmithiae | CNPS-EB: *A2 State CNPS: 1B.3 | Sharsmith's onion | |
| Androsace elongata subsp. acuta | CNPS-EB: *A2 State CNPS: 4.2 | California androsace | |
| Aphyllon epigalium subsp. epigalium | CNPS-EB: A2 | ||
| Aquilegia eximia | (A. formosa is more common) | CNPS-EB: A2 | Van Houtte's columbine |
| Castilleja subinclusa subsp. subinclusa | CNPS-EB: A1 | long-leaved indian paintbrush | |
| Chaenactis glabriuscula var. heterocarpha | CNPS-EB: A1 | inner coast range pincushion, yellow pincushion | |
| Chlorogalum pomeridianum var. minus | CNPS-EB: *A1 State CNPS: 1B.2 | dwarf soaproot | |
| Cirsium fontinale var. campylon | CNPS-EB: *A2 State CNPS: 1B.2 | Mount Hamilton fountain thistle | |
| Cryptantha hispidula | CNPS-EB: A1 | Napa cryptantha | |
| Delphinium parryi subsp. parryi | CNPS-EB: A2 | Parry's larkspur | |
| Diplacus rattanii | (formerly Mimulus rattanii) | CNPS-EB: A2 | Rattan monkeyflower |
| Eriastrum abramsii | CNPS-EB: A2 | Abram's eriastrum | |
| Eriogonum covilleanum | CNPS-EB: A2 | Coville's wild buckwheat, Coville's eriogonum | |
| 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 | Small's sulphur flower, bay buckwheat |
| Eriophyllum jepsonii | CNPS-EB: *A2 State CNPS: 4.3 | Jepson's woolly sunflower | |
| Fritillaria agrestis | CNPS-EB: *A2 State CNPS: 4.2 | stinkbells | |
| Galium andrewsii subsp. gatense | CNPS-EB: *A2 State CNPS: 4.2 | phlox-leaf serpentine bedstraw, serpentine bedstraw | |
| Hesperolinon clevelandii | CNPS-EB: A1 | Cleveland's dwarf flax | |
| Leptosiphon ambiguus | (formerly Linanthus a.) | CNPS-EB: *A2 State CNPS: 4.2 | serpentine leptosiphon, serpentine linanthus |
| Lessingia tenuis | CNPS-EB: *A2 State CNPS: 4.3 | spring lessingia | |
| Malacothrix clevelandii | CNPS-EB: A2 | Cleveland's malacothrix | |
| Pentachaeta exilis subsp. exilis | CNPS-EB: A1 | meager pentachaeta | |
| Phacelia ramosissima | CNPS-EB: A2 | branching phacelia | |
| Piperia michaelii | CNPS-EB: *A2 State CNPS: 4.2 | Michael's rein-orchid | |
| Poa howellii | CNPS-EB: A2 | Howell's bluegrass | |
| Ravenella exigua | Formerly Campanula exigua | CNPS-EB: *A2 State CNPS: 1B.2 | chaparral harebell |
| Ravenella griffinii | Formerly Campanula griffinii | CNPS-EB: A2 | Griffin's campanula |
| Sabulina pusilla | (formerly Minuartia pusilla) | CNPS-EB: A1 | annual sandwort, least sandwort |
| Sedella pentandra | (formorely Parvisedum pentandr | CNPS-EB: A2 | Mount Hamilton sedella |
| Streptanthus breweri | CNPS-EB: A1 | Brewer's streptanthus | |
| Toxicoscordion venenosum var. venenosum | (formerly Zigadenus venenosus) | CNPS-EB: A1 | death-camas |
| Triteleia peduncularis | CNPS-EB: A1 | long-rayed brodiaea | |
| Acanthomintha lanceolata | CNPS-EB: *A2 State CNPS: 4.2 | Santa Clara thornmint | |
| Berberis aquifolium var. dictyota | CNPS-EB: A1 | Jepson's mahonia | |
| Chaenactis glabriuscula var. glabriuscula | CNPS-EB: A1 | yellow pincushion | |
| Crocidium multicaule | CNPS-EB: A1 | spring gold | |
| 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: A1 | California dodder | |
| Eleocharis parishii | CNPS-EB: A1 | Dombey's spike-rush | |
| Elymus trachycaulus subsp. trachycaulus | CNPS-EB: A1 | slender wheat grass | |
| Fritillaria falcata | CNPS-EB: *A1 State CNPS: 1B.2 | talus fritillary | |
| Garrya congdonii | CNPS-EB: A1x | Congdon's silk-tassel | |
| Hesperolinon disjunctum | CNPS-EB: A1 | dwarf flax | |
| Hesperolinon tehamense | 3 questionable ID sites. Needs field research | CNPS-EB: *A1? State CNPS: 1B.3 | Napa western flax |
| Hordeum brachyantherum subsp. californicum | (ssp. brachyantherum is more common | CNPS-EB: A1 | California barley |
| Juncus oxymeris | CNPS-EB: A1 | pointed rush | |
| Leptosyne hamiltonii | (formerly Coreopsis h.) | CNPS-EB: *A1 State CNPS: 1B.2 | Mount Hamilton coreopsis |
| Lessingia pectinata var. tenuipes | CNPS-EB: A2 | valley lessingia | |
| Linanthus dichotomus subsp. meridianus | CNPS-EB: A1 | ||
| Madia anomala | CNPS-EB: A1x | plump-seeded madia | |
| Microseris douglasii subsp. tenella | (subsp douglasii is more common) | CNPS-EB: A2 | silver puffs |
| Penstemon heterophyllus var. purdyi | CNPS-EB: A2 | foothill penstemon | |
| 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 |
| Ribes aureum var. gracillimum | CNPS-EB: A2 | golden currant | |
| Rumex salicifolius var. unknown | CNPS-EB: A2? | willow dock | |
| Viola purpurea subsp. purpurea | CNPS-EB: A1 | mountain violet | |
| Agoseris heterophylla var. cryptopleura | CNPS-EB: C | ||
| Agoseris heterophylla var. heterophylla | CNPS-EB: C | ||
| Agoseris retrorsa | CNPS-EB: B-PV | spear-leaved agoseris | |
| Allophyllum gilioides subsp. gilioides | CNPS-EB: B | straggling gilia | |
| Allophyllum gilioides subsp. violaceum | (ssp. gilioides is more common | CNPS-EB: B-PV | straggling gilia |
| Apiastrum angustifolium | CNPS-EB: C | wild celery | |
| Calystegia malacophylla subsp. pedicellata | CNPS-EB: B | woolly morning-glory | |
| Camissoniopsis intermedia | CNPS-EB: B-PV | small primrose | |
| Ceanothus leucodermis | CNPS-EB: B | chaparral whitethorn | |
| Cirsium cymosum var. cymosum | CNPS-EB: B-PV | peregrine thistle | |
| Clarkia modesta | CNPS-EB: B-PV | modest clarkia | |
| Claytonia gypsophiloides | CNPS-EB: B-PV | coast range montia | |
| Deschampsia bolanderi | Formerly Scribneria bolanderi | CNPS-EB: B | Scribner's grass |
| Diplacus douglasii | (formerly Mimulus d.) | CNPS-EB: B | Douglas monkeyflower |
| Eriogonum angulosum | CNPS-EB: B | angle-stem wild buckwheat, angle-stemmed eriogonum | |
| Eriogonum luteolum var. luteolum | CNPS-EB: C | golden-carpet wild buckwheat, golden carpet | |
| Festuca octoflora | CNPS-EB: B-PV | sixweeks grass, slender fescue | |
| Garrya flavescens | CNPS-EB: B | silk tassel bush | |
| Gilia tricolor subsp. diffusa | CNPS-EB: C | birds-eye gilia | |
| Githopsis specularioides | CNPS-EB: B-PV | common bluecup | |
| Gruvelia pusilla | (formerly Pectocarya pusilla) | CNPS-EB: C | little pectocarya |
| Helianthella californica var. californica | CNPS-EB: B | California helianthella | |
| Keckiella breviflora var. breviflora | CNPS-EB: B-PV | gaping penstemon | |
| Lathyrus jepsonii var. californicus | CNPS-EB: B | buff pea | |
| Leptosiphon pygmaeus subsp. continentalis | (formerly Linanthus p. ssp. c. | CNPS-EB: B | pygmy linanthus, pygmy leptosiphon |
| Lithophragma parviflorum var. parviflorum | CNPS-EB: B-PV | prairie star | |
| Melica californica | CNPS-EB: B-PV | California melic | |
| Monardella douglasii | CNPS-EB: B-PV | fenestra monardella, Fenestra monardella | |
| Myosurus minimus subsp. minimus | CNPS-EB: B-PV | common mouse-tail | |
| Myriopteris intertexta | CNPS-EB: B-PV | coastal lip fern | |
| Packera breweri | (formerly Senecio b.) | CNPS-EB: B-PV | Brewer's ragwort, Brewer's butterweed |
| Pediomelum californicum | CNPS-EB: B | indian breadroot | |
| Pentachaeta alsinoides | CNPS-EB: B-PV | tiny pentachaeta | |
| Perideridia californica | CNPS-EB: B-PV | California yampah | |
| Phacelia breweri | CNPS-EB: B-PV | Brewer's phacelia | |
| Phacelia divaricata | CNPS-EB: B-PV | divaricate phacelia | |
| Pinus coulteri | CNPS-EB: B-PV | Coulter pine | |
| Plagiobothrys acanthocarpus | CNPS-EB: B-PV | adobe popcornflower, adobe allocarya | |
| Plagiobothrys canescens var. canescens | CNPS-EB: C | valley popcornflower | |
| Plagiobothrys tenellus | CNPS-EB: C | Pacific popcornflower, slender popcornflower | |
| Quercus durata var. durata | CNPS-EB: B | leather oak | |
| Quercus lobata | CNPS-EB: B-PV | valley oak, roble | |
| Quercus wislizeni var. frutescens | CNPS-EB: B | shrubby interior live oak | |
| Ranunculus canus var. canus | CNPS-EB: C | Sacramento Valley buttercup | |
| Ribes quercetorum | CNPS-EB: B | oakwoods gooseberry, oak gooseberry | |
| Senecio aronicoides | CNPS-EB: B-PV | rayless ragwort, California butterweed | |
| Stellaria nitens | CNPS-EB: B-PV | shining chickweed | |
| Stipa lemmonii var. lemmonii | (formerly Achnatherum lemmonii) | CNPS-EB: B | Lemmon needlegrass |
| Streptanthus glandulosus subsp. glandulosus | CNPS-EB: B-PV | jewelflower | |
| Tetrapteron graciliflorum | CNPS-EB: B-PV | hill sun cup | |
| Tonella tenella | CNPS-EB: B-PV | small-flowered tonella | |
| Trifolium obtusiflorum | CNPS-EB: B-PV | clammy clover, creek clover | |
| Amelanchier utahensis | CNPS-EB: C | Utah service-berry | |
| Anemopsis californica | CNPS-EB: B-PV | yerba mansa, lizard tail | |
| Arnica discoidea | CNPS-EB: B-PV | rayless arnica | |
| Berula erecta | CNPS-EB: C | cutleaf water-parsnip | |
| Camissoniopsis micrantha | CNPS-EB: B-PV | small primrose | |
| Carex praegracilis | CNPS-EB: B | black creeper sedge, freeway sedge, deer-bed sedge | |
| Clematis ligusticifolia | CNPS-EB: C | western virgin's bower, virgin's bower | |
| Dudleya cymosa subsp. paniculata | CNPS-EB: B-PV | spreading dudleya | |
| Elymus multisetus | CNPS-EB: B-PV | big squirreltail | |
| Epilobium campestre | CNPS-EB: C | smooth boisduvalia | |
| Eriogonum wrightii var. trachygonum | CNPS-EB: C | rough-node bastard-sage, Wright's eriogonum | |
| Eriophyllum lanatum var. achilleoides | CNPS-EB: C | woolly sunflower | |
| Erythranthe cardinalis | (formerly Mimulus c.) | CNPS-EB: B-PV | scarlet monkeyflower |
| Euphorbia serpillifolia subsp. serpillifolia | CNPS-EB: C | thyme-leaved spurge | |
| Festuca idahoensis | CNPS-EB: B-PV | Idaho fescue, blue bunchgrass | |
| Frangula californica subsp. tomentella | (formerly Rhamnus t.) | CNPS-EB: C | hoary coffeeberry |
| Helianthus californicus | CNPS-EB: C | California sunflower | |
| Hoita macrostachya | CNPS-EB: C | California hemp | |
| Juncus mexicanus | CNPS-EB: C | Mexican rush | |
| Malacothamnus fremontii var. fremontii | CNPS-EB: B-PV | white-coat mallow | |
| Mimetanthe pilosa | (formerly Mimulus pilosus) | CNPS-EB: B | downy monkeyflower |
| Nemophila parviflora var. parviflora | CNPS-EB: B | small-flowered nemophila | |
| Nemophila pedunculata | CNPS-EB: B | meadow nemophila | |
| Penstemon heterophyllus var. heterophyllus | CNPS-EB: B-PV | chaparral penstemon | |
| Quercus berberidifolia | CNPS-EB: B | scrub oak | |
| Selaginella bigelovii | CNPS-EB: C | spike-moss | |
| Stachys albens | CNPS-EB: B-PV | white hedge nettle | |
| Stipa cernua | CNPS-EB: B-PV | nodding needlegrass | |
| Stipa pulchra | CNPS-EB: B-PV | purple needlegrass | |
| Stylocline gnaphaloides | CNPS-EB: B | everlasting neststraw, nest-straw |