Pittsburg - other or unknown sites
| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Blepharizonia plumosa | CNPS-EB: *A2 State CNPS: 1B.1 | big tarplant | |
| California macrophylla | (formerly Erodium macrophyllum | CNPS-EB: B-PV | round-leaved filaree |
| Populus trichocarpa | (formerly P. balsamifera var. | CNPS-EB: C | black cottonwood |
| Deinandra lobbii | (formerly Hemizonia l.) | CNPS-EB: C | three-rayed tarweed |
| Nemophila pedunculata | CNPS-EB: B | meadow nemophila | |
| Plagiobothrys canescens var. canescens | CNPS-EB: C | valley popcornflower | |
| Quercus lobata | CNPS-EB: B-PV | valley oak, roble | |
| Salix gooddingii | CNPS-EB: B | Goodding's black willow |
