| Sapindaceae, or the soapberry family, with about 135 genera and some 1,600 species, occurs mainly in the tropical areas of the world and is especially abundant in the American tropics. |
| The closely related soapberry, sometimes also called russet buffaloberry, is S. canadensis. |
| Buffalograss, common horehound, live oak, Texas persimmon, ashe juniper, honey mesquite, western soapberry, and salt cedar were at lower elevations and along creekbeds. |
| The most common forms included beech-like trees, poplars, willows, cattails, sumac, soapberry, and conifers such as pines, sequoias, and false cypress. |
| Juniper trees are common throughout the canyon as well as mesquite, cottonwood, salt cedar, willow, western soapberry and hackberry. |
| Very simply, soap nuts are the dried shells from the soapberry. |
