Franklin Canyon
| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Helianthella castanea | CNPS-EB: *A2 State CNPS: 1B.2 | Diablo helianthella | |
| Asclepias cordifolia | (A. californica is more common | CNPS-EB: A2 | purple milkweed |
| Clarkia concinna subsp. concinna | CNPS-EB: C | large godetia | |
| Corethrogyne filaginifolia | (formerly Lessingia f. var. f. | CNPS-EB: C | California aster |
| Danthonia californica | CNPS-EB: B-PV | California oat grass | |
| Deschampsia danthonioides | CNPS-EB: B-PV | annual hair grass | |
| Elymus multisetus | CNPS-EB: B-PV | big squirreltail | |
| Lathyrus jepsonii var. californicus | CNPS-EB: B | buff pea | |
| Lomatium caruifolium var. caruifolium | CNPS-EB: B-PV | caraway-leaved lomatium | |
| Plagiobothrys fulvus var. campestris | CNPS-EB: B | field popcornflower, fulvous popcornflower | |
| Rhamnus crocea | CNPS-EB: B-PV | spiny redberry | |
| Trifolium depauperatum var. depauperatum | (vars. amplectens and truncatu | CNPS-EB: C | dwarf sack clover |
| Triphysaria versicolor subsp. faucibarbata | CNPS-EB: B | smooth owl's-clover | |
| Cuscuta subinclusa | CNPS-EB: C | canyon dodder | |
| Pleuropogon californicus var. californicus | CNPS-EB: B-PV | semaphore grass |
