Brentwood area
| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Blepharizonia plumosa | CNPS-EB: *A2 State CNPS: 1B.1 | big tarplant | |
| Camissonia campestris subsp. campestris | (historical-1940) | CNPS-EB: A1x | Mojave suncup |
| Cryptantha microstachys | CNPS-EB: A2 | Tejon cryptantha | |
| Eriastrum pluriflorum subsp. pluriflorum | CNPS-EB: A1 | many-flowered eriastrum | |
| Lessingia pectinata var. tenuipes | CNPS-EB: A2 | valley lessingia | |
| Microseris douglasii subsp. tenella | (subsp douglasii is more common) | CNPS-EB: A2 | silver puffs |
| Deinandra kelloggii | (formerly Hemizonia k.) | CNPS-EB: B | Kellogg's tarweed |
| Bidens frondosa | CNPS-EB: B | sticktight | |
| Bolboschoenus maritimus subsp. paludosus | (formerly Scirpus m.) | CNPS-EB: C | bulrush |
| Gilia capitata subsp. staminea | CNPS-EB: B-PV | blue field gilia | |
| Oenothera elata subsp. hookeri | CNPS-EB: C | evening-primrose | |
| Phacelia ciliata | CNPS-EB: B | Great Valley phacelia, Great Valley phacelia | |
| Phacelia tanacetifolia | CNPS-EB: B | tansy phacelia | |
| Psilocarphus oregonus | CNPS-EB: B | Oregon woollyheads, Oregon woolly-marbles | |
| Stylocline gnaphaloides | CNPS-EB: B | everlasting neststraw, nest-straw |
