This southeastern species is unknown in Mo. or north of the Oho Rv. except for two localities in s Ill (K). It is verified in Ky. from CALL and GRAV (MUR), but Conrad's (1972) reported coll. from MCLE cannot be located at KY. There is also a believable report from BARR (KSNPC database). Further east, nudum may be expected on the Cumberland Plateau, where it reported widely in Tenn. (Ch), although perhaps confused with cassinoides. V. nudum differs from cassinoises as follows (W): peduncle usually 30-40 mm long (versus 5-25 mm); leaves entire or rarely somewhat undulate-crenate (versus undulate-crenulate or rarely entire). Cultivation of nudum is now increasing for commercial sales of "native plants" throughout eastern states, and some cultivars have been named (e.g. "Winterhur"). But in Ky. no local escapes have been documented yet outside the native range.