| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Helianthella castanea | CNPS-EB: *A2 State CNPS: 1B.2 | Diablo helianthella | |
| Viburnum ellipticum | CNPS-EB: *A2 State CNPS: 2B.3 | oval-leaved viburnum | |
| Amsinckia lunaris | CNPS-EB: *A2 State CNPS: 1B.2 | bent-flowered fiddleneck | |
| Eryngium aristulatum var. aristulatum | CNPS-EB: A2 | ||
| Eryngium jepsonii | CNPS-EB: *A2 State CNPS: 1B.2 | ||
| Limnanthes douglasii subsp. douglasii | CNPS-EB: A1 | meadowfoam | |
| Ranunculus orthorhynchus var. bloomeri | CNPS-EB: A1x | Bloomer's buttercup | |
| Setaria parviflora | CNPS-EB: B | knotroot bristle grass, perennial foxtail | |
| Apocynum cannabinum | CNPS-EB: B-PV | dogbane, Indian-hemp | |
| Clarkia concinna subsp. concinna | CNPS-EB: C | large godetia | |
| Helianthella californica var. californica | CNPS-EB: B | California helianthella | |
| Layia hieracioides | CNPS-EB: B-PV | tall layia | |
| Pentachaeta alsinoides | CNPS-EB: B-PV | tiny pentachaeta | |
| Rhus aromatica | (formerly R. trilobata) | CNPS-EB: B-PV | skunk bush, skunkbrush, squawbush |
| Senecio aronicoides | CNPS-EB: B-PV | rayless ragwort, California butterweed | |
| Trifolium fucatum | CNPS-EB: B-PV | bull clover |