| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Berberis aquifolium var. dictyota | CNPS-EB: A1 | Jepson's mahonia | |
| Blepharizonia plumosa | CNPS-EB: *A2 State CNPS: 1B.1 | big tarplant | |
| Psilocarphus chilensis | (formerly P. tenellus var. glo | CNPS-EB: A1 | round woolly marbles, round woolly-marbles |
| Quercus palmeri | CNPS-EB: A2 | Palmer's oak | |
| Ephedra californica | 2 questionable ID sites. Needs field research | CNPS-EB: A1? | desert tea, Mormon tea |
| Ephedra viridis | Questionable ID. Needs field research | CNPS-EB: A1? | green ephedra |
| Eriogonum deserticola | CNPS-EB: A1x | Colorado desert wild buckwheat, desert eriogonum | |
| Isoetes howellii | CNPS-EB: A1 | Howell's quillwort | |
| Pilularia americana | CNPS-EB: A1 | pillwort | |
| Deschampsia danthonioides | CNPS-EB: B-PV | annual hair grass | |
| Elymus multisetus | CNPS-EB: B-PV | big squirreltail | |
| Gutierrezia californica | CNPS-EB: B-PV | California matchweed | |
| Horkelia californica var. frondosa | CNPS-EB: B-PV | leafy horkelia | |
| Lupinus pachylobus | CNPS-EB: B | big pod lupine | |
| Plagiobothrys canescens var. canescens | CNPS-EB: C | valley popcornflower | |
| Plagiobothrys tenellus | CNPS-EB: C | Pacific popcornflower, slender popcornflower | |
| Plantago elongata | CNPS-EB: B-PV | annual coast plantain | |
| Pleuropogon californicus var. californicus | CNPS-EB: B-PV | semaphore grass | |
| Stachys albens | CNPS-EB: B-PV | white hedge nettle | |
| Stipa cernua | CNPS-EB: B-PV | nodding needlegrass | |
| Stipa pulchra | CNPS-EB: B-PV | purple needlegrass | |
| Triglochin scilloides | CNPS-EB: C | flowering-quillwort | |
| Amsinckia retrorsa | CNPS-EB: B? | rigid fiddleneck | |
| Lathyrus jepsonii var. californicus | CNPS-EB: B | buff pea | |
| Lepidium latipes | CNPS-EB: B-PV | dwarf peppergrass | |
| Plagiobothrys fulvus var. campestris | CNPS-EB: B | field popcornflower, fulvous popcornflower | |
| Quercus lobata | CNPS-EB: B-PV | valley oak, roble | |
| Thysanocarpus laciniatus | CNPS-EB: C | lacepod |