| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Amsinckia lunaris | CNPS-EB: *A2 State CNPS: 1B.2 | bent-flowered fiddleneck | |
| Calochortus umbellatus | CNPS-EB: *A2 State CNPS: 4.2 | Oakland star-tulip | |
| Calycadenia multiglandulosa | CNPS-EB: A2 | sticky calycadenia | |
| Helianthella castanea | CNPS-EB: *A2 State CNPS: 1B.2 | Diablo helianthella | |
| Phacelia malvifolia var. malvifolia | CNPS-EB: A2 | stinging phacelia | |
| Cicuta douglasii | CNPS-EB: B | water-hemlock | |
| Garrya elliptica | CNPS-EB: B-PV | silk tassel bush | |
| Prunus subcordata | CNPS-EB: C | Pacific plum, Sierra plum | |
| Arbutus menziesii | CNPS-EB: B-PV | Pacific madrone | |
| Festuca idahoensis | CNPS-EB: B-PV | Idaho fescue, blue bunchgrass | |
| Heterotheca sessiliflora subsp. bolanderi | H. s. ssp. echioides is more common | CNPS-EB: C | Bolander goldenaster |
| Stipa lepida | CNPS-EB: B-PV | foothill needlegrass | |
| Stipa pulchra | CNPS-EB: B-PV | purple needlegrass |