| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Hydrocotyle ranunculoides | CNPS-EB: A2 | floating marsh pennywort | |
| Lilaeopsis masonii | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G2 CNDDB Rank: S2 CESA Status: CR | Mason's lilaeopsis | |
| Symphyotrichum lentum | (formerly Aster lentus) | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Suisun marsh aster |
| Anemopsis californica | CNPS-EB: B | yerba mansa, lizard tail | |
| Cephalanthus occidentalis | CNPS-EB: A2 | button bush | |
| Lathyrus jepsonii var. jepsonii | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G5T2 CNDDB Rank: S2 | delta tule pea, Delta tule pea | |
| Phragmites australis | CNPS-EB: C | common reed |