| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Acanthomintha lanceolata | CNPS-EB: *A2 State CNPS: 4.2 | Santa Clara thornmint | |
| Amsinckia douglasiana | (historical-1938) | CNPS-EB: *A1x State CNPS: 4.2 | Douglas' fiddleneck |
| Androsace elongata subsp. acuta | CNPS-EB: *A2 State CNPS: 4.2 | California androsace | |
| Arabis blepharophylla | CNPS-EB: *A1x State CNPS: 4.3 | coast rockcress | |
| Aspidotis carlotta-halliae | CNPS-EB: *A1x State CNPS: 4.2 | Carlotta Hall's lace fern | |
| Astragalus nuttallii var. nuttallii | (historical-1866) | CNPS-EB: *A1x State CNPS: 4.2 | ocean bluff milkvetch, Nuttall's milk-vetch |
| Atriplex coronata var. coronata | CNPS-EB: *A2 State CNPS: 4.2 | crownscale | |
| Calandrinia breweri | CNPS-EB: *A2 State CNPS: 4.2 | Brewer's calandrinia | |
| Calochortus umbellatus | CNPS-EB: *A2 State CNPS: 4.2 | Oakland star-tulip | |
| Castilleja ambigua subsp. ambigua | CNPS-EB: *A2 State CNPS: 4.2 | Johnny-nip | |
| Clarkia breweri | CNPS-EB: *A1 State CNPS: 4.2 | Brewer's clarkia | |
| Clarkia concinna subsp. automixa | (ssp. concinna is more common) | CNPS-EB: *A2 State CNPS: 4.3 | Santa Clara red ribbons |
| Collomia diversifolia | CNPS-EB: *A1 State CNPS: 4.3 | serpentine collomia | |
| Convolvulus simulans | CNPS-EB: *A2 State CNPS: 4.2 | small-flowered morning-glory | |
| Eleocharis parvula | CNPS-EB: *A1 State CNPS: 4.3 | small spikerush | |
| 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 | |
| Erythranthe inconspicua | CNPS-EB: *A1 State CNPS: 4.3 | ||
| 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 | |
| Hesperevax caulescens | (H. sparsiflora is more common | CNPS-EB: *A2 State CNPS: 4.2 | hogwallow starfish |
| Iris longipetala | CNPS-EB: *A1 State CNPS: 4.2 | coast iris | |
| Lasthenia ferrisiae | CNPS-EB: *A1 State CNPS: 4.2 | Ferris' goldfields | |
| Leptosiphon ambiguus | (formerly Linanthus a.) | CNPS-EB: *A2 State CNPS: 4.2 | serpentine leptosiphon, serpentine linanthus |
| Leptosiphon aureus | (formerly L.acicularis, Linanthus acicularis) | CNPS-EB: *A2 State CNPS: 4.2 | bristly leptosiphon, bristly linanthus |
| Leptosiphon grandiflorus | (formerly Linanthus g.) | CNPS-EB: *A1x State CNPS: 4.2 | large-flowered leptosiphon, large-flowered linanthus |
| Lessingia tenuis | CNPS-EB: *A2 State CNPS: 4.3 | spring lessingia | |
| Microseris sylvatica | CNPS-EB: *A2 State CNPS: 4.2 | sylvan microseris | |
| Navarretia cotulifolia | CNPS-EB: *A2 State CNPS: 4.2 | cotula navarretia | |
| Navarretia heterandra | CNPS-EB: *A1 State CNPS: 4.3 | Tehama navarretia | |
| Navarretia nigelliformis subsp. nigelliformis | CNPS-EB: *A2? State CNPS: 4.2 | adobe navarretia | |
| Perideridia gairdneri subsp. gairdneri | CNPS-EB: *A1x State CNPS: 4.2 | Gairdner's yampah | |
| Piperia michaelii | CNPS-EB: *A2 State CNPS: 4.2 | Michael's rein-orchid | |
| Psilocarphus brevissimus var. multiflorus | May not occur in EastBay (var. brevissimus is more common | CNPS-EB: *A1? State CNPS: 4.2 | delta woolly-marbles |
| Ranunculus lobbii | CNPS-EB: *A2 State CNPS: 4.2 | Lobb's aquatic buttercup |