Boehmeria cylindrica, the "smallspike false nettle," is a herb in the family Urticaceae. It is widespread in eastern North America and the Great Plains from New Brunswick to Florida to Texas to Nebraska, with scattered reports of isolated populations in New Mexico, Arizona, and Utah as well as in Bermuda, Mexico, Central America, the West Indies and South America. The plant is an herb or subshrub to 160 cm tall, usually monoecious but rarely dioecious. Leaves are usually opposite though occasionally alternate, and the inflorecence a spike with a tuft of small bracts at the apex.