| Species | Common Name |
|---|---|
| Croton californicus | |
| Croton setiger | turkey mullein |
| Euphorbia crenulata | |
| Euphorbia lathyris | caper spurge |
| Euphorbia maculata | spotted spurge |
| Euphorbia oblongata | golden spurge |
| Euphorbia ocellata subsp. ocellata | Contura Creek sandmat |
| Euphorbia peplus | petty spurge |
| Euphorbia serpens | creeping spurge |
| Euphorbia serpillifolia subsp. serpillifolia | thyme-leafed spurge |
| Euphorbia spathulata | spatulate spurge |
| Mercurialis annua | annual mercury |
| Ricinus communis | castor-bean |