| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Aphyllon purpureum | CNPS-EB: C | naked broomrape | |
| Blennosperma nanum var. nanum | CNPS-EB: C | blennosperma | |
| Delphinium hansenii subsp. hansenii | CNPS-EB: A2 | Hansen's larkspur | |
| Delphinium hesperium subsp. hesperium | CNPS-EB: B | western larkspur | |
| Delphinium variegatum subsp. variegatum | CNPS-EB: C | royal larkspur | |
| Ericameria nauseosa var. mohavensis | CNPS-EB: A2 | Mojave rabbitbrush, rubber rabbitbrush | |
| Eryngium jepsonii | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | ||
| Euphorbia serpillifolia subsp. serpillifolia | CNPS-EB: C | thyme-leaved spurge | |
| Forestiera pubescens | CNPS-EB: B | desert olive | |
| Galium andrewsii subsp. gatense | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G5T3 CNDDB Rank: S3 | phlox-leaf serpentine bedstraw, serpentine bedstraw | |
| Glycyrrhiza lepidota | CNPS-EB: C | wild licorice | |
| Gutierrezia californica | CNPS-EB: C | California matchweed | |
| Hesperolinon breweri | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Brewer's western flax | |
| Holocarpha obconica | CNPS-EB: B | San Joaquin tarplant | |
| Lasthenia microglossa | CNPS-EB: A2 | small-ray goldfields | |
| Lepidium latipes | CNPS-EB: B | dwarf peppergrass | |
| Malacothamnus fremontii var. fremontii | CNPS-EB: C | white-coat mallow | |
| Montia fontana | CNPS-EB: C | water chickweed, blinks, water chickweed | |
| Plagiobothrys trachycarpus | CNPS-EB: C | rough-nutlet popcornflower, rough-fruited allocarya | |
| Platanus racemosa | CNPS-EB: C | western sycamore, California sycamore | |
| Poa howellii | CNPS-EB: A2 | Howell's bluegrass | |
| Pogogyne zizyphoroides | CNPS-EB: A2 | Sacramento beardstyle | |
| Ribes quercetorum | CNPS-EB: A2 | oakwoods gooseberry, oak gooseberry | |
| Silene laciniata subsp. californica | (formerly Silene c.) | CNPS-EB: C | Indian pink, California pink, California Indian pink |
| Thysanocarpus radians | CNPS-EB: A1 | ribbed fringe pod | |
| Trifolium oliganthum | CNPS-EB: C | few-flowered clover | |
| Triodanis biflora | CNPS-EB: A2 | Venus' looking-glass | |
| Tropidocarpum gracile | CNPS-EB: B | slender tropidocarpum | |
| Vicia hassei | CNPS-EB: A2 | slender vetch | |
| Arctostaphylos glauca | CNPS-EB: C | big-berried manzanita | |
| Arctostaphylos manzanita subsp. manzanita | CNPS-EB: A2 | common manzanita | |
| Calochortus pulchellus | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Mount Diablo fairy-lantern | |
| Delphinium parryi subsp. parryi | CNPS-EB: A2 | Parry's larkspur | |
| Dudleya cymosa subsp. paniculata | CNPS-EB: B | spreading dudleya | |
| Helianthella castanea | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2 CNDDB Rank: S2 | Diablo helianthella | |
| Layia platyglossa | CNPS-EB: B | tidy-tips | |
| Leptosiphon androsaceus | (formerly Linanthus a.) | CNPS-EB: C | common linanthus, common leptosiphon |
| Leptosiphon ciliatus | (formerly Linanthus c.) | CNPS-EB: C | whisker brush |
| Lythrum californicum | CNPS-EB: B | California loosestrife | |
| Navarretia mellita | CNPS-EB: C | honey-scented navarretia | |
| Penstemon heterophyllus var. heterophyllus | CNPS-EB: B | chaparral penstemon | |
| Piperia michaelii | CNPS-EB: *A2 State CNPS: 4.2 Global Rank: G3 CNDDB Rank: S3 | Michael's rein-orchid | |
| Quercus berberidifolia | CNPS-EB: C | scrub oak | |
| Quercus lobata | CNPS-EB: B | valley oak, roble | |
| Ribes divaricatum var. pubiflorum | CNPS-EB: C | straggle bush, straggly gooseberry | |
| Scutellaria tuberosa | CNPS-EB: C | Dannie's skullcap | |
| Stipa pulchra | CNPS-EB: C | purple needlegrass |