| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Asarum caudatum | CNPS-EB: B | wild-ginger | |
| Cornus sericea subsp. sericea | CNPS-EB: C | American dogwood | |
| Zeltnera davyi | (formerly Centaurium d.) | CNPS-EB: B | Davy's centaury, conchalagua |
| Amelanchier utahensis | CNPS-EB: C | Utah service-berry | |
| Arctostaphylos crustacea subsp. crustacea | CNPS-EB: C | brittleleaf manzanita | |
| Dirca occidentalis | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | western leatherwood | |
| Layia hieracioides | CNPS-EB: C | tall layia | |
| Micropus amphibolus | (historical - 1955) | CNPS-EB: *A1x State CNPS: 3.2 Global Rank: G3G4 CNDDB Rank: S3S4 | Mount Diablo cottonseed, Mt. Diablo cottonweed |
| Piperia elegans subsp. elegans | CNPS-EB: C | coast piperia, elegant piperia | |
| Rosa spithamea | CNPS-EB: C | coast ground rose, ground rose | |
| Stachys bullata | CNPS-EB: A1? | California hedge nettle | |
| Vaccinium ovatum | CNPS-EB: C | California huckleberry |