| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Atriplex coronata var. coronata | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4T3 CNDDB Rank: S3 | crownscale | |
| Eriogonum gracile var. gracile | CNPS-EB: C | slender woolly wild buckwheat, slender buckwheat | |
| 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 | |
| Nitrophila occidentalis | CNPS-EB: A1 | nitrophila | |
| Cephalanthus occidentalis | CNPS-EB: A2 | button bush | |
| Leersia oryzoides | CNPS-EB: A1 | rice cutgrass | |
| Lilaeopsis masonii | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G2 CNDDB Rank: S2 CESA Status: CR | Mason's lilaeopsis | |
| Phalaris arundinacea | CNPS-EB: A1 | reed canary grass | |
| Schoenoplectus tabernaemontani | CNPS-EB: A1x | SOFT-STEM BULRUSH | |
| Symphyotrichum lentum | (formerly Aster lentus) | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Suisun marsh aster |