| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Anemopsis californica | CNPS-EB: B | yerba mansa, lizard tail | |
| Holozonia filipes | CNPS-EB: A2 | whitecrown, holozonia | |
| Ceanothus leucodermis | CNPS-EB: A2 | chaparral whitethorn | |
| Ehrendorferia chrysantha | (formerly Dicentra chrysantha) | CNPS-EB: B | golden ear-drops |
| Heterotheca oregona var. scaberrima | CNPS-EB: A1 | Oregon goldenaster | |
| Mentzelia laevicaulis var. laevicaulis | (historical-1969) | CNPS-EB: A1x | blazing star |
| Mimetanthe pilosa | (formerly Mimulus pilosus) | CNPS-EB: B | downy monkeyflower |