In: Chamberlain, James L.; Emery, Marla R.; Patel-Weynand, Toral, eds. 2018. Assessment of nontimber forest products in the United States under changing conditions. Gen. Tech. Rep. SRS–232. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station
Many products are harvested from U.S. forests that are not derived from timber. These nontimber forest products (NTFPs) are called by many names; regardless of the term, they are products made from plant materials and fungi that are found in the forest soils and throughout the aboveground vegetation, from the duff to the topmost tree canopy. The products are collected for many reasons, including personal enjoyment, cultural and spiritual importance, and commercial gain.