Flora of North America species comparison

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Heuchera americana var. hispida
Photo is of parent taxon

American alumroot, stiffly short-hair or hairy alum-root
Petioles

glabrous or very short stipitate-glandular.
Flowers

hypanthium free 1.5–2 mm, campanulate;

petals purple or pink, wider than sepals, margins fimbriate.
2n

= 14.

Heuchera americana var. hispida
Phenology Flowering Apr–Jun.
Habitat Rich woods often over base-saturated granite and gneiss, or in shallow rocky soil
Elevation 200-1300 m (700-4300 ft)
Distribution
from FNA
MD; NC; VA; WV
[BONAP county map]
Discussion

Variety hispida occurs in the mountains and hills of western Maryland and Virginia, eastern West Virginia, and Surry County, North Carolina, where var. americana and Heuchera pubescens overlap; it is intermediate between var. americana and H. pubescens in floral characters. Variety hispida was confused with H. richardsonii for almost a century, beginning in 1849 when Gray reduced H. richardsonii to synonymy under H. hispida, after some seeds of H. richardsonii germinated among H. hispida plants in a labeled plot and later replaced them (C. O. Rosendahl et al. 1933).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 8, p. 95.
Parent taxa Saxifragaceae > Heuchera > Heuchera americana
Sibling taxa
H. americana var. americana, H. americana var. hirsuticaulis
Synonyms H. hispida
Name authority (Pursh) E. F. Wells: Rhodora 81: 576. 1979 ,
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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