| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Hibiscus lasiocarpos var. occidentalis | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G5T3 CNDDB Rank: S3 | rose-mallow | |
| Lathyrus jepsonii var. jepsonii | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G5T2 CNDDB Rank: S2 | delta tule pea, Delta tule pea | |
| Symphyotrichum lentum | (formerly Aster lentus) | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Suisun marsh aster |
| Bidens frondosa | CNPS-EB: B | sticktight | |
| Carex comosa | CNPS-EB: *A1x State CNPS: 2B.1 Global Rank: G5 CNDDB Rank: S2 | bristly sedge | |
| Lilaeopsis masonii | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G2 CNDDB Rank: S2 CESA Status: CR | Mason's lilaeopsis | |
| Lycopus americanus | CNPS-EB: A2 | cutleaf bugleweed | |
| Potamogeton zosteriformis | (historical-1949) | CNPS-EB: *A1x State CNPS: 2B.2 Global Rank: G5 CNDDB Rank: S3 | eel-grass pondweed |