Kentucky Plant Atlas




Taxonomic distinction unclear    No county information
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Saxifragaceae Heuchera <Americanae> pubescens
Heuchera pubescens Pursh
ALI: no HAB: n/a, n/a, n/a, n/a ABU: n/a, n/a, 0
H. pubescens sensu lato is a large-flowered species of the east-central Appalachians (in Pa. to N.C.) that has also been reported from Ky. (K, M) and Tenn. (Ch), mostly before 1950, but not by Wells (1984; FNA 8). These reports may be based on introgressants with americana probably referabe to hispida (see notes under that name), or on the dubious segregate, H. pubescens var. brachyandra Rosend., Butt. & Lak. (with stamens included or barely exerted), or on the more distinct segregate, H. alba Rydb. (with relatively large white petals). A few of these reports also result from misidentified colls. of longiflora (e.g. B's colls. at GH or US; Wells 1984). However, there is an old mysterious coll. at GH that appears close to typical pubescens, with "Kentucky" written directly on the sheet (also "Heuchera reniformis Raf." and "Raf. in H. Durand"). Moreover, there does appears to be a broad zone of introgression between americana and pubescens.