These Appalachian plants differ from typical americana in having almost completely glabrous leaves, except for their ciliate margins and minutely glandular-puberulent petioles; there may also be subtle differences in texture and color. In contrast, var. americana generally has hairs on both leaf surfaces (strigose above), although either surface can be thinly hairy or glabrate in some cases. The plants mapped here deserve further study for potential description as a new variety. At GH, there are colls. of similar plants from DC. Ga., N.C., S.C., Tenn. and Va. The name "Heuchera glauca Raf." is written on a few of the older colls., and should be researched further; the type remains unknown (Wells 1984). H. hispida Pursh (= H. americana var. hispida (Pursh) Wells) also has generally glabrous leaves, but its larger flowers with purple petals are distinct; see notes under that name (and pubescens).