Heuchera parviflora var. puberula |
Heuchera parviflora |
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littleflower alumroot |
cave alumroot, little-flower alum-root |
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Habit | Herbs acaulescent; caudex branched or unbranched. | |||||
Flowering stems | 9–45 cm, short to long stipitate-glandular, viscid. |
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Leaves | petiole densely short stipitate-glandular; blade surfaces densely short stipitate-glandular, hairs to 0.6 mm. |
petiole usually long stipitate-glandular, sometimes short stipitate-glandular; blade (often purple abaxially), reniform to orbiculate, shallowly 5–7-lobed, 3–13 cm, base cordate, lobes rounded, margins crenate, apex obtuse, surfaces short or long stipitate-glandular abaxially, short stipitate-glandular adaxially, viscid. |
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Inflorescences | diffuse. |
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Flowers | hypanthium radially symmetric, free to 0.3 mm, white or pink, obconic, 1.2–3.2 mm, short or moderately long stipitate-glandular; sepals erect, green-tipped, equal, 0.5–1.3 mm, apex rounded; petals reflexed, white or pink, narrowly oblanceolate, unlobed, 1.5–3.5 mm, margins entire; stamens exserted 1.2–3.2 mm; styles exserted 1–3 mm, 1.5–4 mm, to 0.1 mm diam. |
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Capsules | ovoid, 2–5.7 mm, (minutely stipitate-glandular or glabrous), beaks divergent, not papillose. |
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Seeds | dark brown, ovoid, 0.4–0.6 mm, smooth. |
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Hypanthia | densely short stipitate-glandular. |
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2n | = 14. |
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Heuchera parviflora var. puberula |
Heuchera parviflora |
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Phenology | Flowering Jul–Sep. | |||||
Habitat | Shaded or north-facing sandstone or limestone ledges or rock undercuts | |||||
Elevation | 200-500 m (700-1600 ft) | |||||
Distribution |
AR; IN; KY; MO |
AL; AR; IL; IN; KY; MO; MS; NC; SC; TN; VA; WV
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Discussion | Variety puberula is uniformly short stipitate-glandular and is mostly restricted to the Ozark Mountains of Arkansas and Missouri, plus sites in central Kentucky and southern Indiana. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 2 (2 in the flora). The specific epithet, parviflora, is similar to that of another species, Heuchera parvifolia, but these two species are distinct and have different legitimate names. The varieties of H. parviflora are not sympatric. The species merits phylogenetic study. The Blackfoot Indians applied a poultice of the pounded root to sores and swellings (D. E. Moerman 1998). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 8, p. 90. | FNA vol. 8, p. 90. | ||||
Parent taxa | ||||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | H. puberula | |||||
Name authority | (Mackenzie & Bush) E. F. Wells: Rhodora 81: 577. (1979) | Bartling: Index Seminum (Göttingen) 1838: 4. 1838 , | ||||
Web links |