| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Astragalus asymmetricus | CNPS-EB: C | San Joaquin locoweeed | |
| Panicum capillare | CNPS-EB: A2 | witch grass | |
| Penstemon centranthifolius | CNPS-EB: B | scarlet bugler | |
| Sesuvium verrucosum | CNPS-EB: B | western sea-purslane, sea-purslane | |
| Anemopsis californica | CNPS-EB: B | yerba mansa, lizard tail | |
| Castilleja subinclusa subsp. franciscana | CNPS-EB: A1 | Franciscan indian paintbrush | |
| Chenopodium berlandieri var. unknown | Split into 2 varieties. Sites need to be surveyed to determine vars.. | CNPS-EB: A2? | pitseed goosefoot |
| Cirsium quercetorum | CNPS-EB: A2 | brownie thistle | |
| Collinsia bartsiifolia var. bartsiifolia | CNPS-EB: A1x | white Chinese houses | |
| Diplacus tricolor | (formerly Mimulus tricolor) | CNPS-EB: A1x | tricolor monkeyflower |
| Downingia ornatissima var. mirabilis | (historical-1956; formerly D. ornatissima var. eximia) | CNPS-EB: A1x | Solano downingia |
| Downingia pulchella | CNPS-EB: B | flat-faced downingia | |
| Festuca californica | CNPS-EB: C | California fescue | |
| Gilia tricolor subsp. unknown | CNPS-EB: B? | birds-eye gilia | |
| Lasthenia conjugens | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 FESA Status: FE | Contra Costa goldfields | |
| Lasthenia minor | CNPS-EB: A1 | coastal goldfields, woolly goldfields | |
| Leptochloa fusca subsp. fascicularis | CNPS-EB: A1 | bearded sprangletop | |
| Malacothrix coulteri | CNPS-EB: A1 | snake's-head | |
| Muilla maritima | CNPS-EB: B | common muilla | |
| Phoradendron leucarpum subsp. macrophyllum | (formerly P. serotinum subsp. macrophyllum, P. macrophyllum) | CNPS-EB: C | big leaf mistletoe |
| Pleuropogon californicus var. californicus | CNPS-EB: B | semaphore grass | |
| Quercus lobata | CNPS-EB: B | valley oak, roble | |
| Stephanomeria elata | CNPS-EB: A2 | stephanomeria | |
| Triglochin scilloides | CNPS-EB: C | flowering-quillwort |