| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Calamagrostis rubescens | CNPS-EB: B | pine reed grass, pine grass | |
| Carex nebrascensis | CNPS-EB: B | Nebraska sedge | |
| Carex praegracilis | CNPS-EB: C | black creeper sedge, freeway sedge, deer-bed sedge | |
| Cirsium andrewsii | CNPS-EB: *A1 State CNPS: 1B.2 Global Rank: G3 CNDDB Rank: S3 | Franciscan thistle | |
| Dirca occidentalis | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | western leatherwood | |
| Erigeron petrophilus var. petrophilus | CNPS-EB: B | rock daisy | |
| Erigeron philadelphicus var. philadelphicus | CNPS-EB: C | fleabane | |
| Iris douglasiana | CNPS-EB: B | Douglas iris | |
| Isolepis cernua | (formerly Scirpus cernuus) | CNPS-EB: C | low club-rush |
| Penstemon heterophyllus var. heterophyllus | CNPS-EB: B | chaparral penstemon | |
| Penstemon heterophyllus var. purdyi | CNPS-EB: A2 | foothill penstemon | |
| Rhamnus crocea | CNPS-EB: C | spiny redberry | |
| Scutellaria californica | CNPS-EB: B | California skullcap | |
| Stebbinsoseris heterocarpa | CNPS-EB: C | grassland silverpuffs, derived microseris | |
| Stipa cernua | CNPS-EB: C | nodding needlegrass | |
| Stipa pulchra | CNPS-EB: C | purple needlegrass | |
| Wyethia glabra | (W. helenioides is more common | CNPS-EB: C | mule ears |
| Delphinium nudicaule | CNPS-EB: C | red larkspur, orange larkspur | |
| Streptanthus glandulosus subsp. glandulosus | CNPS-EB: B | jewelflower |