| Agoseris heterophylla var. cryptopleura | | C | |
| Agoseris heterophylla var. unknown | Agoseris heterophylla split into 2 vars. in 2011 Jepson Manual, need field work to resolve vars. | C? | annual agoseris |
| Amaranthus blitoides | | C | procumbent pigweed, prostrate amaranth |
| Amelanchier utahensis | | C | Utah service-berry |
| Anisocarpus madioides | (formerly Madia m.) | C | woodland tarweed, woodland madia |
| Atriplex argentea var. expansa | | C | silverscale |
| Berula erecta | | C | cutleaf water-parsnip |
| Brodiaea terrestris subsp. terrestris | | C | dwarf brodiaea |
| Carex barbarae | | C | whiteroot sedge, Santa Barbara sedge, St. Barbara's sedge |
| Carex nudata | | C | torrent sedge |
| Clarkia gracilis subsp. gracilis | | C | summer's darling |
| Collinsia sparsiflora var. sparsiflora | | C | few-flowered blue-eyed Mary |
| Collinsia sparsiflora var. unknown | | C? | few-flowered blue-eyed Mary |
| Cordylanthus pilosus subsp. pilosus | | C | hairy bird's-beak |
| Cornus sericea subsp. sericea | | C | American dogwood |
| Cornus sericea subsp. unknown | | C? | American dogwood |
| Crocanthemum scoparium var. vulgare | (formerly Helianthemum scoparium var. vulgare) | C | peak rush-rose |
| Downingia pulchella | | C | flat-faced downingia |
| Frangula californica subsp. tomentella | (formerly Rhamnus t.) | C | hoary coffeeberry |
| Galium triflorum | | C | sweet-scented bedstraw |
| Gilia tricolor subsp. diffusa | | C | birds-eye gilia |
| Juncus mexicanus | | C | Mexican rush |
| Phacelia divaricata | | C | divaricate phacelia |
| Plagiobothrys acanthocarpus | | C | adobe popcornflower, adobe allocarya |
| Plagiobothrys tenellus | | C | Pacific popcornflower, slender popcornflower |
| Populus trichocarpa | (formerly P. balsamifera var. | C | black cottonwood |
| Prunus emarginata | | C | bitter cherry |
| Prunus subcordata | | C | Pacific plum, Sierra plum |
| Rumex californicus | (formerly R. salicifolius var. dentatus) | C | willow dock |
| Selaginella bigelovii | | C | spike-moss |
| Silene laciniata subsp. californica | (formerly Silene c.) | C | Indian pink, California pink, California Indian pink |
| Trifolium columbinum | | C | olive clover |
| Trifolium obtusiflorum | | C | clammy clover, creek clover |