| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Eryngium jepsonii | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | ||
| Helianthella castanea | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Diablo helianthella | |
| Setaria parviflora | CNPS-EB: B | knotroot bristle grass, perennial foxtail | |
| Viburnum ellipticum | CNPS-EB: *A2 State CNPS: 2B.3 Global Rank: G4G5 CNDDB Rank: S3 | oval-leaved viburnum | |
| Amsinckia lunaris | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G3 CNDDB Rank: S3 | bent-flowered fiddleneck | |
| Apocynum cannabinum | CNPS-EB: B | dogbane, Indian-hemp | |
| Clarkia concinna subsp. concinna | CNPS-EB: C | large godetia | |
| Delphinium nudicaule | CNPS-EB: C | red larkspur, orange larkspur | |
| Helianthella californica var. californica | CNPS-EB: A2 | California helianthella | |
| Limnanthes douglasii subsp. douglasii | CNPS-EB: A1 | meadowfoam | |
| Pentachaeta alsinoides | CNPS-EB: C | tiny pentachaeta | |
| Ranunculus orthorhynchus var. bloomeri | CNPS-EB: A1x | Bloomer's buttercup | |
| Rhus aromatica | (formerly R. trilobata) | CNPS-EB: B | skunk bush, skunkbrush, squawbush |
| Rosa spithamea | CNPS-EB: C | coast ground rose, ground rose | |
| Senecio aronicoides | CNPS-EB: C | rayless ragwort, California butterweed | |
| Trifolium dichotomum | CNPS-EB: C | branched indian clover | |
| Trifolium fucatum | CNPS-EB: C | bull clover |