Heuchera sanguinea |
Heuchera parviflora |
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coralbells |
cave alumroot, little-flower alum-root |
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Habit | Herbs acaulescent; caudex branched. | Herbs acaulescent; caudex branched or unbranched. | ||||
Flowering stems | 20–40 cm, short and sometimes long stipitate-glandular. |
9–45 cm, short to long stipitate-glandular, viscid. |
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Leaves | petiole long stipitate-glandular; blade reniform to orbiculate, shallowly 5–7-lobed, 2–5.5 cm, base cordate, lobes rounded, margins dentate, apex acute to obtuse, surfaces long stipitate-glandular on veins abaxially, glabrous or sparsely long stipitate-glandular adaxially. |
petiole usually long stipitate-glandular, sometimes short stipitate-glandular; blade (often purple abaxially), reniform to orbiculate, shallowly 5–7-lobed, 3–13 cm, base cordate, lobes rounded, margins crenate, apex obtuse, surfaces short or long stipitate-glandular abaxially, short stipitate-glandular adaxially, viscid. |
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Inflorescences | moderately dense to diffuse. |
diffuse. |
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Flowers | hypanthium weakly bilaterally to radially symmetric, free 2.5–2.8 mm, dark pink to red, broadly campanulate or urceolate, 4–8 mm, short stipitate-glandular proximally, sparsely long stipitate-glandular distally; sepals spreading, darker red-tipped, equal, 2–3 mm, apex oblong or rounded; petals spreading, pink or cream, narrowly oblanceolate, unlobed, 1.2–1.8 mm (shorter than sepals), margins entire; stamens included 1.5–3 mm; styles included 1.5–3 mm, 1.5–2 mm, 0.1+ mm diam. |
hypanthium radially symmetric, free to 0.3 mm, white or pink, obconic, 1.2–3.2 mm, short or moderately long stipitate-glandular; sepals erect, green-tipped, equal, 0.5–1.3 mm, apex rounded; petals reflexed, white or pink, narrowly oblanceolate, unlobed, 1.5–3.5 mm, margins entire; stamens exserted 1.2–3.2 mm; styles exserted 1–3 mm, 1.5–4 mm, to 0.1 mm diam. |
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Capsules | ovoid, 4.5–6 mm, beaks divergent, not papillose. |
ovoid, 2–5.7 mm, (minutely stipitate-glandular or glabrous), beaks divergent, not papillose. |
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Seeds | dark brown, ellipsoid, 0.5–0.6 mm, bluntly spiny. |
dark brown, ovoid, 0.4–0.6 mm, smooth. |
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Heuchera sanguinea |
Heuchera parviflora |
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Phenology | Flowering Mar–Oct. | |||||
Habitat | Moist, shaded rocks | |||||
Elevation | 1200-2600 m (3900-8500 ft) | |||||
Distribution |
AZ; NM; Mexico (Chihuahua)
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AL; AR; IL; IN; KY; MO; MS; NC; SC; TN; VA; WV
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Discussion | Heuchera sanguinea occurs in the southwestern United States and northern Chihuahua, Mexico, and is widely cultivated throughout the cooler parts of North America. Heuchera sanguinea varies considerably within populations in shape, lobing, and size of leaves, in amount of hairs, and in shape, form, and color of flowers. Rydberg recognized var. pulchra as characterized by denser inflorescences and longer hairs on its pedicels, inferior part of the ovary, and sepals. Mixed populations with individuals bearing longer and shorter hairs can be found throughout the range of the species, especially in Arizona. It seems best to recognize H. sanguinea as a variable species without infraspecific taxa. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 2 (2 in the flora). The specific epithet, parviflora, is similar to that of another species, Heuchera parvifolia, but these two species are distinct and have different legitimate names. The varieties of H. parviflora are not sympatric. The species merits phylogenetic study. The Blackfoot Indians applied a poultice of the pounded root to sores and swellings (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. 100. | FNA vol. 8, p. 90. | ||||
Parent taxa | Saxifragaceae > Heuchera | Saxifragaceae > Heuchera | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | H. sanguinea var. pulchra | |||||
Name authority | Engelmann: in F. A. Wislizenus, Mem. Tour N. Mexico, 107. 1848 , | Bartling: Index Seminum (Göttingen) 1838: 4. 1838 , | ||||
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