| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Arctostaphylos manzanita subsp. manzanita | CNPS-EB: A2 | common manzanita | |
| Cordylanthus pilosus subsp. pilosus | CNPS-EB: B | hairy bird's-beak | |
| Deschampsia danthonioides | CNPS-EB: C | annual hair grass | |
| Helianthella castanea | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Diablo helianthella | |
| Hoita strobilina | (historical-1865) | CNPS-EB: *A1x State CNPS: 1B.1 Global Rank: G2? CNDDB Rank: S2? | Loma Prieta hoita |
| Horkelia californica var. frondosa | CNPS-EB: B | leafy horkelia | |
| Quercus xchasei | CNPS-EB: B | Chase oak |