| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Agoseris retrorsa | CNPS-EB: A2 | spear-leaved agoseris | |
| Allium sharsmithiae | CNPS-EB: *A2 State CNPS: 1B.3 Global Rank: G2 CNDDB Rank: S2 | Sharsmith's onion | |
| Amelanchier utahensis | CNPS-EB: C | Utah service-berry | |
| Ancistrocarphus filagineus | CNPS-EB: C | woolly fishhooks | |
| Arctostaphylos glauca | CNPS-EB: C | big-berried manzanita | |
| Calystegia malacophylla subsp. pedicellata | CNPS-EB: A2 | woolly morning-glory | |
| Campanula exigua | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | chaparral harebell | |
| Ceanothus leucodermis | CNPS-EB: A2 | chaparral whitethorn | |
| Chaenactis glabriuscula var. megacephala | CNPS-EB: A1 | yellow pincushion | |
| Chorizanthe polygonoides var. polygonoides | CNPS-EB: A1 | knotweed spineflower | |
| Claytonia gypsophiloides | CNPS-EB: B | coast range montia | |
| Cordylanthus rigidus subsp. rigidus | CNPS-EB: A1 | stiffly-branched bird's-beak | |
| Downingia cuspidata | CNPS-EB: A1 | cuspidate downingia | |
| 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 |
| Eschscholzia caespitosa | CNPS-EB: A1 | tufted poppy | |
| Galium andrewsii subsp. gatense | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G5T3 CNDDB Rank: S3 | phlox-leaf serpentine bedstraw, serpentine bedstraw | |
| 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 |
| Lessingia nemaclada | CNPS-EB: A2 | slender-stemmed lessignia | |
| Malacothrix floccifera | CNPS-EB: C | woolly malacothrix | |
| Monardella douglasii | CNPS-EB: A2 | fenestra monardella, Fenestra monardella | |
| Pediomelum californicum | CNPS-EB: A2 | indian breadroot | |
| Perideridia oregana | CNPS-EB: A2 | yampah | |
| Phacelia divaricata | CNPS-EB: B | divaricate phacelia | |
| Quercus berberidifolia | CNPS-EB: C | scrub oak | |
| Quercus durata var. durata | CNPS-EB: B | leather oak | |
| Ribes malvaceum var. malvaceum | CNPS-EB: C | chaparral currant | |
| Ribes quercetorum | CNPS-EB: A2 | oakwoods gooseberry, oak gooseberry | |
| Rigiopappus leptocladus | CNPS-EB: C | rigiopappus | |
| Streptanthus glandulosus subsp. glandulosus | CNPS-EB: B | jewelflower | |
| Acanthomintha lanceolata | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4 CNDDB Rank: S4 | Santa Clara thornmint | |
| Allium amplectens | CNPS-EB: A2 | narrow-leaved onion | |
| Androsace elongata subsp. acuta | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G5?T3T4 CNDDB Rank: S3S4 | California androsace | |
| Aphyllon purpureum | CNPS-EB: C | naked broomrape | |
| Aquilegia eximia | (A. formosa is more common) | CNPS-EB: A2 | Van Houtte's columbine |
| Arctostaphylos manzanita subsp. manzanita | CNPS-EB: A2 | common manzanita | |
| 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 | |
| Blennosperma nanum var. nanum | CNPS-EB: C | blennosperma | |
| Calochortus invenustus | CNPS-EB: A1x | plain mariposa-lily | |
| Chaenactis glabriuscula var. heterocarpha | CNPS-EB: A1 | inner coast range pincushion, yellow pincushion | |
| Cirsium fontinale var. campylon | CNPS-EB: *A1 State CNPS: 1B.2 Global Rank: G2T2 CNDDB Rank: S2 | Mount Hamilton fountain thistle | |
| 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 | |
| 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 | |
| Cuscuta californica var. californica | CNPS-EB: A2 | California dodder | |
| 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 parryi subsp. parryi | CNPS-EB: A2 | Parry's larkspur | |
| Elymus multisetus | CNPS-EB: C | big squirreltail | |
| Enemion stipitatum | (formerly Isopyrum s.) | CNPS-EB: A2 | Siskiyou rue-anemone |
| Ericameria nauseosa var. mohavensis | CNPS-EB: A2 | Mojave rabbitbrush, rubber rabbitbrush | |
| Eriogonum covilleanum | CNPS-EB: A2 | Coville's wild buckwheat, Coville's eriogonum | |
| Eriogonum gracile var. gracile | CNPS-EB: C | slender woolly wild buckwheat, slender buckwheat | |
| Eriogonum luteolum var. luteolum | CNPS-EB: A2 | golden-carpet wild buckwheat, golden carpet | |
| 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 | |
| Festuca californica | CNPS-EB: C | California fescue | |
| Festuca elmeri | CNPS-EB: A1 | Elmer's fescue | |
| Forestiera pubescens | CNPS-EB: B | desert olive | |
| Frangula californica subsp. tomentella | (formerly Rhamnus t.) | CNPS-EB: C | hoary coffeeberry |
| Fritillaria falcata | CNPS-EB: *A1 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | talus fritillary | |
| Garrya elliptica | CNPS-EB: B | silk tassel bush | |
| Garrya flavescens | CNPS-EB: A2 | silk tassel bush | |
| Garrya fremontii | CNPS-EB: A1x | silk tassel bush | |
| 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 | |
| Gruvelia pusilla | (formerly Pectocarya pusilla) | CNPS-EB: B | little pectocarya |
| Helianthus californicus | CNPS-EB: C | California sunflower | |
| Hoita macrostachya | CNPS-EB: B | California hemp | |
| Koeleria macrantha | CNPS-EB: C | june grass | |
| Leptosiphon androsaceus | (formerly Linanthus a.) | CNPS-EB: C | common linanthus, common leptosiphon |
| Leptosyne stillmanii | (formerly Coreopsis s.) | CNPS-EB: A1x | Stillman's coreopsis |
| Linanthus dichotomus subsp. meridianus | CNPS-EB: A1 | ||
| Lomatium caruifolium var. caruifolium | CNPS-EB: B | caraway-leaved lomatium | |
| 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 | |
| Nicotiana quadrivalvis | CNPS-EB: B | indian tobacco | |
| Packera breweri | (formerly Senecio b.) | CNPS-EB: C | Brewer's ragwort, Brewer's butterweed |
| Penstemon heterophyllus var. heterophyllus | CNPS-EB: B | chaparral penstemon | |
| Phacelia breweri | CNPS-EB: C | Brewer's phacelia | |
| Piperia elegans subsp. elegans | CNPS-EB: C | coast piperia, elegant piperia | |
| Piperia transversa | CNPS-EB: B | flat spurred piperia, transverse piperia | |
| Platanus racemosa | CNPS-EB: C | western sycamore, California sycamore | |
| Quercus garryana var. garryana | CNPS-EB: B | Oregon oak | |
| Quercus lobata | CNPS-EB: B | valley oak, roble | |
| Ribes aureum var. gracillimum | CNPS-EB: A2 | golden currant | |
| Salix breweri | CNPS-EB: A1x | Brewer's willow | |
| Silene verecunda | CNPS-EB: A1 | San Francisco campion, Cuyamaca campion | |
| Stebbinsoseris heterocarpa | CNPS-EB: C | grassland silverpuffs, derived microseris | |
| Stellaria nitens | CNPS-EB: C | shining chickweed | |
| Stipa pulchra | CNPS-EB: C | purple needlegrass | |
| Streptanthus breweri | CNPS-EB: A1 | Brewer's streptanthus | |
| Thysanocarpus laciniatus | CNPS-EB: B | lacepod | |
| Toxicoscordion venenosum var. venenosum | (formerly Zigadenus venenosus) | CNPS-EB: A1 | death-camas |
| Trifolium oliganthum | CNPS-EB: C | few-flowered clover | |
| Viola purpurea subsp. quercetorum | CNPS-EB: C | mountain violet |