| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Centromadia parryi subsp. congdonii | (formerly Hemizonia p. ssp. c. | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G3T2 CNDDB Rank: S2 | Congdon's tarplant |
| Amsinckia lycopsoides | CNPS-EB: C | bugloss-flowered fiddleneck, bugloss fiddleneck | |
| Astragalus tener var. tener | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2T1 CNDDB Rank: S1 | alkali milkvetch | |
| Downingia pulchella | CNPS-EB: B | flat-faced downingia | |
| Lasthenia conjugens | CNPS-EB: *A2 State CNPS: 1B.1 Global Rank: G1 CNDDB Rank: S1 FESA Status: FE | Contra Costa goldfields | |
| Lasthenia fremontii | CNPS-EB: A1 | Fremont's goldfields | |
| Matricaria occidentalis | (formerly Chamomilla o.) (hist | CNPS-EB: A1x | valley mayweed, valley pineapple weed |
| Muilla maritima | CNPS-EB: B | common muilla | |
| Myosurus minimus subsp. minimus | CNPS-EB: C | common mouse-tail | |
| Phacelia ciliata | CNPS-EB: B | Great Valley phacelia, Great Valley phacelia | |
| Plagiobothrys glaber | CNPS-EB: *A1 State CNPS: 1A Global Rank: GX CNDDB Rank: SX | hairless popcornflower | |
| Plantago elongata | CNPS-EB: B | annual coast plantain | |
| Pogogyne douglasii | (historical-1940) | CNPS-EB: A1x | Douglas' beardstyle, Douglas pogogyne |
| Psilocarphus brevissimus var. brevissimus | CNPS-EB: B | dwarf woollyheads, dwarf woolly-marbles | |
| Pyrrocoma racemosa var. racemosa | CNPS-EB: A1 | racemose pyrrocoma | |
| Spergularia macrotheca var. macrotheca | CNPS-EB: A2 | large-flowered sand spurry | |
| Stachys ajugoides | (var. rigida is more common) | CNPS-EB: A2 | bugle hedge nettle |