| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Dirca occidentalis | CNPS-EB: *A2 State CNPS: 1B.2 | western leatherwood | |
| Downingia concolor var. concolor | CNPS-EB: A1 | ||
| Eryngium jepsonii | CNPS-EB: *A2 State CNPS: 1B.2 | ||
| Microseris douglasii subsp. tenella | (subsp douglasii is more common) | CNPS-EB: A2 | silver puffs |
| Penstemon heterophyllus var. purdyi | CNPS-EB: A2 | foothill penstemon | |
| Alisma triviale | (formerly A. plantago-aquatica | CNPS-EB: B-PV | water plantain |
| Aralia californica | CNPS-EB: B-PV | elk clover | |
| Carex barbarae | CNPS-EB: C | whiteroot sedge, Santa Barbara sedge, St. Barbara's sedge | |
| Deschampsia elongata | CNPS-EB: B-PV | slender hair grass | |
| Fraxinus latifolia | CNPS-EB: B | Oregon ash | |
| Lepidium latipes | CNPS-EB: B-PV | dwarf peppergrass | |
| Morella californica | (formerly Myrica c.) | CNPS-EB: B | wax myrtle |
| Platanus racemosa | CNPS-EB: B-PV | western sycamore, California sycamore | |
| Layia gaillardioides | CNPS-EB: B-PV | woodland layia | |
| Layia hieracioides | CNPS-EB: B-PV | tall layia | |
| Monolopia major | CNPS-EB: B | cupped monolopia |