| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Clarkia purpurea subsp. purpurea | (ssp. quadrivulnera is more co | CNPS-EB: A2 | purple clarkia |
| Prunus subcordata | CNPS-EB: C | Pacific plum, Sierra plum | |
| Quercus garryana var. garryana | CNPS-EB: B | Oregon oak | |
| Rhamnus crocea | CNPS-EB: B-PV | spiny redberry | |
| Deschampsia cespitosa subsp. cespitosa | CNPS-EB: B-PV | tufted hairgrass | |
| Ericameria arborescens | CNPS-EB: B-PV | golden-fleece | |
| Helianthella castanea | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Diablo helianthella | |
| Monolopia major | CNPS-EB: B | cupped monolopia | |
| Navarretia mellita | CNPS-EB: C | honey-scented navarretia | |
| Plagiobothrys humistratus | CNPS-EB: A2 | low popcornflower, dwarf allocarya | |
| Rhus aromatica | (formerly R. trilobata) | CNPS-EB: C | skunk bush, skunkbrush, squawbush |
| Trifolium fucatum | CNPS-EB: B | bull clover | |
| Triodanis biflora | CNPS-EB: A2 | Venus' looking-glass |