Heuchera merriamii |
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Canyon Creek alumroot, Merriam's alumroot |
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Habit | Herbs acaulescent; caudex branched or unbranched. |
Flowering stems | 11–32 cm, long stipitate-glandular or glabrate. |
Leaves | petiole (2.4–5 cm), moderately long stipitate-glandular; blade orbiculate, reniform, or pentagonal, shallowly 5–7-lobed, 2.5–4.5 cm, base shallowly cordate to truncate, lobes rounded, margins dentate, apex rounded to obtuse, surfaces finely long stipitate-glandular abaxially, sparsely long stipitate-glandular adaxially. |
Inflorescences | dense; (bracts linear and scarious to 3–5-parted and herbaceous). |
Flowers | hypanthium radially symmetric, free 0.5–1.5 mm, pink, hemispheric, 3–5.5 mm, (base rounded), densely long stipitate-glandular; sepals erect, green- or red-tipped, equal, 1–2 mm (often wider than long), apex obtuse; petals erect, white, oblanceolate, (clawed), unlobed, 2–3.5 mm, margins entire; stamens exserted 0.8–2 mm; styles exserted 1–2 mm, 1.5–2.5 mm, 0.1+ mm diam. |
Capsules | ovoid, 3–5 mm, beaks divergent, not papillose. |
Seeds | dark brown, ellipsoid, 0.6 mm. |
2n | = 14. |
Heuchera merriamii |
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Phenology | Flowering Jul–Aug. |
Habitat | Exposed granite ledges in subalpine forests |
Elevation | 1500-2500 m (4900-8200 ft) |
Distribution |
CA; OR
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Discussion | Heuchera merriamii is known from the Siskiyou and Trinity mountains. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 8, p. 93. |
Parent taxa | Saxifragaceae > Heuchera |
Sibling taxa | |
Name authority | Eastwood: Bull. Torrey Bot. Club 32: 199. 1905 (as merriami), |
Web links |