This is widespread in eastern North America, except most of the Gulf Coastal Plain, usually growing in damp woods on floodplain terraces and toe-slopes with medium acid soil. Despite extensive potential habitat in Ky., sessilifolia is uncommon to rare. It is largely restricted to sites that have escaped intensive agricultural disturbance, clearance and drainage. The genus Uvularia is endemic to eastern North America, and has been placed in Colchicaceae based on firm evidence. Its 5-6 species all have 2n = 14, but are mostly quite distinct (see sources of W).