Heuchera micrantha var. micrantha |
Heuchera micrantha |
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crevice alumroot, small-flower alumroot |
alum root, crevice alum-root, small-flower alumroot |
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Habit | Herbs caulescent; caudex branched. | |||||||||||||||||
Flowering stems | 6–57 cm, short to long stipitate-glandular or glabrous, viscid. |
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Leaves | petiole glabrous or long stipitate-glandular; blade orbiculate to pentagonal, shallowly lobed. |
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. |
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Inflorescences | glabrous or sparsely short to medium stipitate-glandular. |
diffuse. |
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Flowers | hypanthium obconic, 1.4–4.5 × 1–3.7 mm, short to long stipitate-glandular; sepals 0.6–1.2 mm, apex rounded to acute; petals 0.2–0.7 mm wide; styles 1.6–3.1 mm. |
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. |
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Capsules | ovoid, 3–8.5 mm, beaks divergent, not papillose. |
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Seeds | black, broadly ellipsoid, (not curved), 0.5–0.8 mm. |
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2n | = 28. |
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Heuchera micrantha var. micrantha |
Heuchera micrantha |
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Phenology | Flowering May–Jun. | |||||||||||||||||
Habitat | Evergreen coniferous forests on basalt, schistose shale, metavolcanic, ultra basic, or serpentine-derived soils | |||||||||||||||||
Elevation | 10-1900 m (0-6200 ft) | |||||||||||||||||
Distribution |
CA; ID; OR; WA |
CA; ID; OR; WA; BC
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Discussion | Variety micrantha occurs in the Coast Range, Cascade Range, Blue and Klamath mountains, northern Sierra Nevada, and the Columbia River gorge, and on wooded banks of the Columbia and its tributaries. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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.) |
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Key |
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Source | FNA vol. 8, p. 91. | FNA vol. 8, p. 91. | ||||||||||||||||
Parent taxa | ||||||||||||||||||
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Name authority | unknown | Douglas ex Lindley: Edwards’s Bot. Reg. 15: plate 1302. 1830 , | ||||||||||||||||
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