| Kingdom: Agrochemicals |
| Phylum: Herbicides |
| Class: Conventional Herbicides |
| Order: General herbicides |
| Family: General Herbicides |
| Subject: herbicides (general) |
| Kingdom: Plantae |
| Phylum: Magnoliophyta |
| Class: Magnoliopsida |
| Subclass: Hamamelidae |
| Order: Fagales |
| Family: Fagaceae |
| Genus: Quercus |
| Subject: Quercus gambelii Nutt. |