Heuchera micrantha |
Heuchera bracteata |
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alum root, crevice alum-root, small-flower alumroot |
bract alumroot, Rocky Mountain alumroot |
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| Habit | Herbs caulescent; caudex branched. | Herbs usually subcaulescent; caudex branched or unbranched. | ||||||||||||||||
| Flowering stems | 6–57 cm, short to long stipitate-glandular or glabrous, viscid. |
leafy, 6–28(–38) 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 short to medium stipitate-glandular; blade reniform or broadly ovate, shallowly 5–7-lobed, 1.5–4 cm, base subcordate or truncate, lobes rounded, margins sharply dentate, apex often mucronate, surfaces short stipitate-glandular or sparsely long stipitate-glandular abaxially, short stipitate-glandular adaxially. |
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| Inflorescences | diffuse. |
dense, (secund). |
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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 weakly bilaterally symmetric, free 0.5–1.5 mm, greenish yellow, narrowly campanulate, 3–5 mm, short stipitate-glandular; sepals erect, green-tipped, equal, 1–1.5 mm, apex rounded; petals erect, green, oblanceolate, unlobed, 2 mm, margins entire; stamens exserted 0.5–1 mm; styles exserted 1 mm, 1.5–2 mm, 0.1+ mm diam. |
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| Capsules | ovoid, 3–8.5 mm, beaks divergent, not papillose. |
ovoid, 4–6 mm, beaks divergent, not papillose. |
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| Seeds | black, broadly ellipsoid, (not curved), 0.5–0.8 mm. |
brownish black, nearly straight along 1 side, convex on other side, 0.7–0.8 mm. |
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Heuchera micrantha |
Heuchera bracteata |
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| Phenology | Flowering May–Jul. | |||||||||||||||||
| Habitat | Shaded rocky ledges and outcrops | |||||||||||||||||
| Elevation | 1700-3500 m [5600-11500 ft] | |||||||||||||||||
| Distribution |
CA; ID; OR; WA; BC
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CO; WY
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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 bracteata occurs in the Rocky Mountains and foothills of northern Colorado and southern Wyoming. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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| Key |
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| Synonyms | Tiarella bracteata | |||||||||||||||||
| Name authority | Douglas ex Lindley: Edwards’s Bot. Reg. 15: plate 1302. 1830 , | (Torrey) Seringe: in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 4: 52. 1830 , | ||||||||||||||||
| Source | FNA vol. 8, p. 91. | FNA vol. 8, p. 97. | ||||||||||||||||
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