| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Dudleya cymosa subsp. paniculata | CNPS-EB: C | spreading dudleya | |
| Penstemon centranthifolius | CNPS-EB: B | scarlet bugler | |
| Cercis occidentalis | CNPS-EB: A1x | western redbud | |
| Heterotheca oregona var. scaberrima | CNPS-EB: A1 | Oregon goldenaster |