| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Alopecurus saccatus | CNPS-EB: B | Howell's meadow foxtail | |
| Arthrocnemum subterminale | CNPS-EB: A2 | Parish's glasswort | |
| Astragalus tener var. tener | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2T1 CNDDB Rank: S1 | alkali milkvetch | |
| Atriplex depressa | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | brittlescale | |
| Lasthenia conjugens | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 FESA Status: FE | Contra Costa goldfields | |
| Lasthenia glaberrima | CNPS-EB: B | smooth goldfields | |
| Lasthenia glabrata subsp. glabrata | CNPS-EB: A2 | yellow-ray goldfields | |
| Lepidium oxycarpum | CNPS-EB: A2 | sharp-podded pepper-grass | |
| Myosurus minimus subsp. minimus | CNPS-EB: C | common mouse-tail | |
| Pilularia americana | CNPS-EB: A1 | pillwort | |
| Plantago elongata | CNPS-EB: B | annual coast plantain | |
| Psilocarphus brevissimus var. brevissimus | CNPS-EB: B | dwarf woollyheads, dwarf woolly-marbles | |
| Suaeda nigra | (formerly S. moquinii) | CNPS-EB: B | bush seepweed |
| Cuscuta campestris | CNPS-EB: A1 | field dodder | |
| Downingia pulchella | CNPS-EB: B | flat-faced downingia | |
| Elatine brachysperma | CNPS-EB: A1 | waterwort | |
| Limosella acaulis | CNPS-EB: A1 | southern mudwort | |
| Navarretia prostrata | CNPS-EB: *A1 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | prostrate vernal pool navarretia | |
| Triglochin scilloides | CNPS-EB: C | flowering-quillwort |