These relatively hairy plants extend less into the Great Plains than var. subintegerrima, and less onto the southeastern Coastal Plain (F, RAB, St). Within Ky. they tend to occur on sites with more seasonal drying, including streamheads on limestone and drier terraces on sandy alluvium. Mapping here is somewhat provisional, pending more detailed assessment; pubescence may vary continuously (from glabrous to tomentose) and tends to be overlooked in field and herbarium. Lower leaf surfaces are relatively pale due to hairs, often causing misidentification as americana.