LEAVES: Lower surface of leaves glabrous to puberulous, with stinging hairs. NOTES: See also parent taxon. 2n = 26, 52. Alluvial woods, margins of deciduous woodlands, fencerows, waste places: Apache, Cochise, Coconino, Graham, Navajo cos.; to 3000 m (10,000 ft); late spring summer; across Canada and the n U.S. from AK to the Atlantic, s in the mts. and along the coasts in the U.S., n Mex. REFERENCES: Boufford, David E. 1992. Urticaceae. Ariz.-Nev. Acad. Sci. 26(1)2.