| Common woody plants in the understory were toyon, California hazel, and poison oak. |
| The removal of understory vegetation, such as greenbrier, would aid in the movement and predator vigilance of the Delmarva fox squirrel. |
| No understory or ground level vegetation was present except for the pneumatophores of the mangrove trees. |
| In Washington, they are generally found in mature Ponderosa pine, Douglas fir, or mixed coniferous forests with a thick understory. |
| Fire exclusion has diminished natural pine reproduction as more fire-sensitive hardwoods, vines, briars, and forbs invade the understory. |
| Heathy woodland and forest has an understory dominated by small-leaved shrubs. |
