| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Cicendia quadrangularis | CNPS-EB: A2 | timwort | |
| Helianthella castanea | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Diablo helianthella | |
| Phacelia tanacetifolia | CNPS-EB: B | tansy phacelia | |
| Scirpus microcarpus | CNPS-EB: C | small-fruited bulrush | |
| Holocarpha macradenia | CNPS-EB: *A1 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 FESA Status: FT CESA Status: CE | Santa Cruz tarplant |