| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Hydrocotyle ranunculoides | CNPS-EB: A2 | floating marsh pennywort | |
| 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 | |
| Bidens laevis | CNPS-EB: A2 | bur-marigold | |
| Calystegia sepium subsp. limnophila | CNPS-EB: B | hedge bindweed | |
| Croton californicus | CNPS-EB: A2 | California croton | |
| Cuscuta pacifica var. pacifica | (formerly C. salina var. major) | CNPS-EB: C | salt-marsh dodder |
| Cyperus erythrorhizos | CNPS-EB: B | red-rooted cyperus | |
| Hibiscus lasiocarpos var. occidentalis | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G5T3 CNDDB Rank: S3 | rose-mallow | |
| Lessingia pectinata var. tenuipes | CNPS-EB: A2 | valley lessingia | |
| 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 | |
| Persicaria lapathifolia | (formerly Polygonum lapathifol | CNPS-EB: B | willow weed |
| Salix gooddingii | CNPS-EB: B | Goodding's black willow |