The Genus Fothergilla is a small group of flowering shrubs that are native to North America. There are a few other names that are sometimes used to refer to this genus, including Witch-alder, Mountain Witch-alder, and Dwarf Alder. Witch-alder is perhaps the most commonly used synonym, as it refers to the traditional use of Fothergilla in folk medicine to treat skin ailments, much like the European Alder tree. Mountain Witch-alder refers to the plant's natural habitat in the mountains of the Eastern United States. Finally, Dwarf Alder refers to the small size of the shrubs, which typically grow to only two or three feet in height.