Heuchera parviflora var. parviflora |
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 sparsely to densely long stipitate-glandular; blade surfaces sparsely to densely long stipitate-glandular abaxially, sparsely short stipitate-glandular adaxially, hairs 0.7–2.5 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 long stipitate-glandular. |
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2n | = 14. |
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Heuchera parviflora var. parviflora |
Heuchera parviflora |
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Phenology | Flowering Jul–Sep. | |||||
Habitat | Shaded or north-facing sandstone or limestone ledges or rock undercuts | |||||
Elevation | 300-800 m (1000-2600 ft) | |||||
Distribution |
AL; IL; IN; KY; MO; MS; NC; SC; TN; VA; WV |
AL; AR; IL; IN; KY; MO; MS; NC; SC; TN; VA; WV
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Discussion | Variety parviflora is sparsely to densely long stipitate-glandular on petioles, peduncles, and abaxial leaf surfaces. It is the more widespread variety in the species, occupying a large area in the southern Appalachian Mountains and Interior Plateau east of the Mississippi River and in Missouri. (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 | ||||||
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Synonyms | H. missouriensis, H. parviflora var. rugelii | |||||
Name authority | unknown | Bartling: Index Seminum (Göttingen) 1838: 4. 1838 , | ||||
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