Heuchera maxima |
Heuchera micrantha |
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island alumroot, jill-of-the-rocks |
alum root, crevice alum-root, small-flower alumroot |
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Habit | Herbs caulescent; caudex branched. | Herbs caulescent; caudex branched. | ||||||||||||||||
Flowering stems | 9–30 cm, short or long stipitate-glandular, viscid. |
6–57 cm, short to long stipitate-glandular or glabrous, viscid. |
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Leaves | petiole (7–22 cm), densely long stipitate-glandular; blade pentagonal to septagonal, deeply 5-lobed, 6.3–17 cm, base deeply cordate, lobes rounded, margins crenate, apex obtuse, surfaces long stipitate-glandular abaxially, glabrous adaxially except long stipitate-glandular near margins, viscid. |
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 | dense. |
diffuse. |
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Flowers | hypanthium radially symmetric, free 0.3–1.4 mm, white to pink, hemispheric, 2.5–4.2 mm, densely long stipitate-glandular; sepals somewhat spreading, green- or red-tipped, equal, 0.7–2 mm, apex rounded or truncate, (medium to long stipitate-glandular); petals spreading, white, oblong-lanceolate, (clawed), unlobed, 2–4 mm, margins entire; stamens exserted 0.4–2.5 mm; styles exserted to 2 mm, 1.5–4 mm, 0.1+ mm diam. |
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, 4–8 mm, beaks divergent, not papillose. |
ovoid, 3–8.5 mm, beaks divergent, not papillose. |
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Seeds | black, broadly fusiform, 0.4 mm. |
black, broadly ellipsoid, (not curved), 0.5–0.8 mm. |
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2n | = 14. |
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Heuchera maxima |
Heuchera micrantha |
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Phenology | Flowering Mar–May. | |||||||||||||||||
Habitat | Exposed cliffs | |||||||||||||||||
Elevation | 0-500 m (0-1600 ft) | |||||||||||||||||
Distribution |
CA
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CA; ID; OR; WA; BC
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Discussion | Of conservation concern. Heuchera maxima is found on the northern Channel Islands (Anacapa, Santa Cruz, Santa Rosa), Santa Barbara County. Heuchera maxima is in the Center for Plant Conservation’s National Collection of Endangered Plants. (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. 93. | FNA vol. 8, p. 91. | ||||||||||||||||
Parent taxa | Saxifragaceae > Heuchera | Saxifragaceae > Heuchera | ||||||||||||||||
Sibling taxa | ||||||||||||||||||
Subordinate taxa | ||||||||||||||||||
Name authority | Greene: Bull. Calif. Acad. Sci. 2: 149. 1886 , | Douglas ex Lindley: Edwards’s Bot. Reg. 15: plate 1302. 1830 , | ||||||||||||||||
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