Lone Tree Valley, Antioch
| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Atriplex coronata var. coronata | CNPS-EB: *A2 State CNPS: 4.2 | crownscale | |
| Downingia insignis | CNPS-EB: A1 | cupped downingia | |
| Downingia ornatissima var. mirabilis | (historical-1956; formerly D. ornatissima var. eximia) | CNPS-EB: A1x | Solano downingia |
| Erythranthe latidens | (formerly Mimulus latidens) | CNPS-EB: A1 | broad-toothed monkeyflower |
| Madia radiata | (historical-1941) | CNPS-EB: *A1x State CNPS: 1B.1 | showy golden madia, showy madia |
| Plagiobothrys infectivus | CNPS-EB: A1x | dye popcornflower | |
| Agoseris heterophylla var. unknown | Agoseris heterophylla split into 2 vars. in 2011 Jepson Manual, need field work to resolve vars. | CNPS-EB: B? | annual agoseris |
| Atriplex argentea var. expansa | CNPS-EB: C | silverscale | |
| California macrophylla | (formerly Erodium macrophyllum | CNPS-EB: B-PV | round-leaved filaree |
| Euphorbia ocellata subsp. ocellata | CNPS-EB: B | valley spurge | |
| Hydrocotyle verticillata | CNPS-EB: B | whorled marsh pennywort | |
| Juncus mexicanus | CNPS-EB: C | Mexican rush | |
| Lithophragma parviflorum var. parviflorum | CNPS-EB: B-PV | prairie star | |
| Plagiobothrys trachycarpus | CNPS-EB: C | rough-nutlet popcornflower, rough-fruited allocarya | |
| Calystegia sepium subsp. limnophila | CNPS-EB: B-PV | hedge bindweed | |
| Eriogonum angulosum | CNPS-EB: B | angle-stem wild buckwheat, angle-stemmed eriogonum | |
| Monolopia major | CNPS-EB: B | cupped monolopia | |
| Phacelia ciliata | CNPS-EB: B | Great Valley phacelia, Great Valley phacelia | |
| Trifolium obtusiflorum | CNPS-EB: B-PV | clammy clover, creek clover |
