| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Centromadia parryi subsp. congdonii | (formerly Hemizonia p. ssp. c. | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G3T2 CNDDB Rank: S2 | Congdon's tarplant |
| Piperia transversa | CNPS-EB: B | flat spurred piperia, transverse piperia | |
| Trifolium wormskioldii | CNPS-EB: A1 | cow clover |