Heuchera grossulariifolia |
Heuchera parviflora |
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gooseberry-leaf alumroot |
cave alumroot, little-flower alum-root |
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Habit | Herbs acaulescent; caudex branched. | Herbs acaulescent; caudex branched or unbranched. | ||||
Flowering stems | 15–65 cm, glabrous or short stipitate-glandular. |
9–45 cm, short to long stipitate-glandular, viscid. |
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Leaves | petiole glabrous or short stipitate-glandular; blade cordate or orbiculate, shallowly 3–5-lobed, 1–7 cm, base cordate, lobes rounded, margins dentate, apex obtuse, surfaces glabrous or short stipitate-glandular. |
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 | dense, interrupted. |
diffuse. |
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Flowers | hypanthium weakly bilaterally symmetric, free 1.2–1.9 mm, cream, broadly campanulate, 4–7 mm, short stipitate-glandular; sepals erect, often red-tipped, equal, 2 mm, apex rounded; petals erect, pink or white, spatulate to narrowly oblanceolate, (clawed), unlobed, 1–3 mm, margins entire; stamens included 1.5 mm; (filaments strongly incurved, shorter than and almost concealed by anthers); styles included to 1 mm, 0.5 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, 5 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, 0.6 mm. |
dark brown, ovoid, 0.4–0.6 mm, smooth. |
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2n | = 14, 28. |
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Heuchera grossulariifolia |
Heuchera parviflora |
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Phenology | Flowering May–Aug. | |||||
Habitat | Grassy hillsides, rocky canyon walls, alpine talus slopes | |||||
Elevation | 100-3400 m (300-11200 ft) | |||||
Distribution |
ID; MT; NV; OR; WA
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AL; AR; IL; IN; KY; MO; MS; NC; SC; TN; VA; WV
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Discussion | Heuchera grossulariifolia includes both diploids and autotetraploids. K. A. Segraves and J. N. Thompson (1999) analyzed floral traits and flowering phenology in diploid and autotetraploid plants. Overall, plant size was greater in tetraploids than in diploids; flowers of tetraploids were larger (average hypanthium 6.5 mm) than those of diploids (average hypanthium 5.5 mm) and had a slightly different shape and phenology, but the diploids and tetraploids were not assigned taxonomic status in their study. Diploids and tetraploids were mixed in some populations, where characters intergraded (D. E. Soltis, pers. comm.). The autotetraploids have had two to seven independent origins from diploid progenitors, and do not represent a monophyletic lineage (Segraves and Thompson; Segraves et al. 1999). (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. 103. | FNA vol. 8, p. 90. | ||||
Parent taxa | ||||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | H. cusickii, H. grossulariifolia var. tenuifolia, H. tenuifolia | |||||
Name authority | Rydberg: Mem. New York Bot. Gard. 1: 196. (1900) | Bartling: Index Seminum (Göttingen) 1838: 4. 1838 , | ||||
Web links |