| Chrysolepis chrysophylla var. minor | golden chinquapin | A2 |
| Quercus agrifolia | coast live oak, encina | B |
| Quercus berberidifolia | scrub oak | C |
| Quercus durata var. durata | leather oak | B |
| Quercus garryana var. garryana | Oregon oak | B |
| Quercus lobata | valley oak, roble | B |
| Quercus palmeri | Palmer's oak | A2 |
| Quercus parvula var. shrevei | island scrub oak | A1 |
| Quercus wislizeni var. frutescens | shrubby interior live oak | C |
| Quercus agrifolia x wislizeni | coast live oak x interior live oak | A1 |
| Quercus garryana x dumosa | Oregon oak x scrub oak | A1x |
| Quercus garryana x durata | Oregon oak x leather oak | A1 |
| Quercus xchasei | Chase oak | B |
| Quercus xeplingii | Oregon oak x blue oak | A1 |
| Quercus xjolonensis | blue oak x valley oak | A1? |