This species of south-central states occurs mostly on subhydric soils in the lower Mississippi watershed, but scattered north as far as w. Ohio. Peripheral or disjunct records within Ky. need checking in several cases, and variation needs further study. Colls. from ANDE and FRAN (KY) appear transitional to vulpina, and such plants have suggested combination with baileyana in some treatments (Duncan 1967; CW). Colls. from BOYD (KY), LAUR (JC) and elsewhere have been referred to var. floridana Munson, which has been distinguished (F, Cr) based largely on its reddish hairs, suggesting a transition to labrusca. However, Moore (1991) considered var. floridana a restricted southeastern taxon, absent from Ky. and Tenn., with more arachnoid pubescence (in contrast to baileyana) and not at all hirtellous (in contrast to cinerea and labrusca); see also W. V. cinerea is also close to aestivalis, and can sometimes have slightly granular waxy surface on the lower leaf surface, resembling aestivalis; see notes under that species.