Heuchera micrantha |
Heuchera pubescens |
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alum root, crevice alum-root, small-flower alumroot |
downy alum-root |
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| Habit | Herbs caulescent; caudex branched. | Herbs acaulescent; caudex branched. | ||||||||||||||||
| Flowering stems | 6–57 cm, short to long stipitate-glandular or glabrous, viscid. |
often leafy, 30–95 cm, short stipitate-glandular. |
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| Leaves | petiole glabrous or sparsely to densely short to long stipitate-glandular; blade orbiculate to polygonal, shallowly to deeply 5–7(–9)-lobed, 2.5–10 cm, base cordate, lobes rounded, margins dentate, apex rounded or obtuse, surfaces glabrous or short to long stipitate-glandular, viscid. |
petiole glabrous or short stipitate-glandular; blade broadly ovate to cordate, shallowly 5-lobed, 3–9 cm, base cordate to nearly truncate, lobes rounded to widely ovate, margins dentate, apex acute or obtuse, surfaces glabrous or sparsely short stipitate-glandular, at least on veins abaxially. |
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| Inflorescences | diffuse. |
diffuse. |
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| Flowers | hypanthium radially symmetric, free to 1.5 mm, greenish white, often tinged with red, obconic to hemispheric, broadly turbinate, or campanulate, 1–4.9 mm, long stipitate-glandular, sometimes short stipitate-glandular proximally; sepals spreading to nearly erect, green- or red-tipped, equal, 0.5–1.8 mm, apex rounded to acute or mucronate; petals often coiled, white or pale pink, oblanceolate, (narrowly clawed), unlobed, 1.6–3.3 mm (2–3 times as long as sepals), margins entire; stamens exserted to 3 mm; styles exserted to 2.5 mm, 0.2–4.2 mm, to 0.1 mm diam. |
hypanthium moderately bilaterally symmetric, free 2–6.2 mm, green, campanulate, abruptly inflated distal to adnation to ovary, 5.5–13.2 mm, very short stipitate-glandular; sepals spreading, green-tipped, equal, 2–4.2 mm, apex rounded (sinuses narrower than petals); petals inflexed, pink or purple, broadly spatulate, unlobed, 2.4–4.4 mm, margins fimbriate; stamens 1.1 mm included to 3.7 mm exserted; styles from 0.6 mm included to 3 mm exserted, 4–6 mm, to 0.1 mm diam. |
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| Capsules | ovoid, 3–8.5 mm, beaks divergent, not papillose. |
ovoid, 7–11 mm, not papillose. |
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| Seeds | black, broadly ellipsoid, (not curved), 0.5–0.8 mm. |
dark brown, ellipsoid, 0.6–1 mm. |
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| 2n | = 14. |
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Heuchera micrantha |
Heuchera pubescens |
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| Phenology | Flowering May–Jun. | |||||||||||||||||
| Habitat | Shaded circumneutral rock outcroppings, ledges, and rocky cuts | |||||||||||||||||
| Elevation | 100-1400 m [300-4600 ft] | |||||||||||||||||
| Distribution |
CA; ID; OR; WA; BC
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MD; NC; PA; SC; VA; WV
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| Discussion | Varieties 5 (5 in the flora). The Skagit Indians rubbed pounded plants of Heuchera micrantha on hair to make it grow and applied it to cuts. The Thompson Indians used a mashed poultice of this root mixed with Douglas fir pitch for wounds. Chewed leaves and roots were spat on sores or wounds. Infusions of roots were taken for liver trouble and sore throat. Small, peeled, cleaned root pieces were chewed for mouth sores and gum boils (D. E. Moerman 1998). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Heuchera pubescens intergrades with H. americana where their ranges overlap, primarily in the central Appalachians of Maryland, Virginia, and West Virginia; the intergrading form is recognized here as H. americana var. hispida. It is rare in South Carolina. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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| Key |
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| Synonyms | H. pubescens var. brachyandra | |||||||||||||||||
| Name authority | Douglas ex Lindley: Edwards’s Bot. Reg. 15: plate 1302. 1830 , | Pursh: Fl. Amer. Sept. 1: 187. (1813) | ||||||||||||||||
| Source | FNA vol. 8, p. 91. | FNA vol. 8, p. 95. | ||||||||||||||||
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