| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Antirrhinum thompsonii | (formerly A. multiflorum) | CNPS-EB: A1 | withered snapdragon |
| Carex nudata | CNPS-EB: B | torrent sedge | |
| Cirsium occidentale var. californicum | (var. venustum is more common) | CNPS-EB: A2 | California thistle |
| Echinodorus berteroi | CNPS-EB: A2 | burhead | |
| Hoita macrostachya | CNPS-EB: B | California hemp | |
| Keckiella corymbosa | CNPS-EB: C | redwood penstemon | |
| Leptosiphon ambiguus | (formerly Linanthus a.) | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4 CNDDB Rank: S4 | serpentine leptosiphon, serpentine linanthus |
| Mentzelia lindleyi | CNPS-EB: B | Lindley's blazing star | |
| Nicotiana quadrivalvis | CNPS-EB: B | indian tobacco | |
| Penstemon heterophyllus var. purdyi | CNPS-EB: A2 | foothill penstemon | |
| Perideridia californica | CNPS-EB: C | California yampah | |
| Phacelia malvifolia var. malvifolia | CNPS-EB: A2 | stinging phacelia | |
| Rumex californicus | (formerly R. salicifolius var. dentatus) | CNPS-EB: C | willow dock |
| Senecio flaccidus var. douglasii | CNPS-EB: A2 | Douglas' threadleaf ragwort, shrubby butterweed | |
| Sparganium eurycarpum var. eurycarpum | CNPS-EB: A1 | bur-reed | |
| Acanthomintha lanceolata | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G4 CNDDB Rank: S4 | Santa Clara thornmint | |
| Clematis ligusticifolia | CNPS-EB: C | western virgin's bower, virgin's bower | |
| Lessingia hololeuca | (historical-1940) | CNPS-EB: *A1x State CNPS: 3 Global Rank: G2G3 CNDDB Rank: S2S3 | woolly-headed lessingia |
| Malacothamnus fremontii var. fremontii | CNPS-EB: C | white-coat mallow | |
| Ribes amarum | CNPS-EB: A1? | bitter gooseberry | |
| Tetrapteron graciliflorum | CNPS-EB: C | hill sun cup |