The medicinal or therapeutic uses of the plants described in this guide are not to be construed in any way as recommendation by the authors or the U.S. Department of Agriculture. Some of the dried crude drugs, which must be modified considerably before commercial use, can be extremely poisonous when not used properly. Readers are cautioned against using these plan drugs for purposes of self-medication. Besides descriptions of 126 medicinal plants of the Appalachian region, this guide includes a glossary of the terms uses, a reference list of publications, and al listing of additional source material.