| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Allium sharsmithiae | CNPS-EB: *A2 State CNPS: 1B.3 Global Rank: G2 CNDDB Rank: S2 | Sharsmith's onion | |
| Cirsium fontinale var. campylon | CNPS-EB: *A1 State CNPS: 1B.2 Global Rank: G2T2 CNDDB Rank: S2 | Mount Hamilton fountain thistle | |
| Pediomelum californicum | CNPS-EB: A2 | indian breadroot | |
| Acanthomintha lanceolata | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4 CNDDB Rank: S4 | Santa Clara thornmint | |
| Allium falcifolium | CNPS-EB: A2 | sickle-leaved onion | |
| Aquilegia eximia | (A. formosa is more common) | CNPS-EB: A2 | Van Houtte's columbine |
| Arctostaphylos glauca | CNPS-EB: C | big-berried manzanita | |
| Calochortus invenustus | CNPS-EB: A1x | plain mariposa-lily | |
| Campanula exigua | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | chaparral harebell | |
| Campanula sharsmithiae | CNPS-EB: *A1x State CNPS: 1B.2 Global Rank: G1G2 CNDDB Rank: S1S2 | SHARSMITH'S HAREBELL | |
| Ceanothus leucodermis | CNPS-EB: A2 | chaparral whitethorn | |
| Chaenactis glabriuscula var. glabriuscula | CNPS-EB: A1 | yellow pincushion | |
| Chaenactis glabriuscula var. megacephala | CNPS-EB: A1 | yellow pincushion | |
| Clarkia breweri | CNPS-EB: *A1 State CNPS: 4.2 Global Rank: G4 CNDDB Rank: S4 | Brewer's clarkia | |
| Claytonia gypsophiloides | CNPS-EB: B | coast range montia | |
| Delphinium nudicaule | CNPS-EB: C | red larkspur, orange larkspur | |
| Ericameria nauseosa var. mohavensis | CNPS-EB: A2 | Mojave rabbitbrush, rubber rabbitbrush | |
| 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 | |
| Fritillaria falcata | CNPS-EB: *A1 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | talus fritillary | |
| Garrya fremontii | CNPS-EB: A1x | silk tassel bush | |
| Hydrophyllum occidentale | CNPS-EB: A1 | western waterleaf | |
| Monardella douglasii | CNPS-EB: A2 | fenestra monardella, Fenestra monardella | |
| Penstemon heterophyllus var. heterophyllus | CNPS-EB: B | chaparral penstemon | |
| Quercus durata var. durata | CNPS-EB: B | leather oak | |
| Salix breweri | CNPS-EB: A1x | Brewer's willow | |
| Streptanthus glandulosus subsp. glandulosus | CNPS-EB: B | jewelflower |