| Kingdom: Agrochemicals |
| Phylum: Herbicides |
| Class: Conventional Herbicides |
| Order: Action like indole acetic acid (synthetic auxins) |
| Family: Pyridine carboxylic acid |
| Subject: triclopyr |
| Kingdom: Plantae |
| Phylum: Magnoliophyta |
| Class: Magnoliopsida |
| Subclass: Hamamelidae |
| Order: Fagales |
| Family: Fagaceae |
| Genus: Quercus |
| Subject: Quercus texana Buckl. |