Heuchera grossulariifolia |
Heuchera bracteata |
|
---|---|---|
gooseberry-leaf alumroot |
bract alumroot, Rocky Mountain alumroot |
|
Habit | Herbs acaulescent; caudex branched. | Herbs usually subcaulescent; caudex branched or unbranched. |
Flowering stems | 15–65 cm, glabrous or short stipitate-glandular. |
leafy, 6–28(–38) cm, short stipitate-glandular. |
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 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. |
Inflorescences | dense, interrupted. |
dense, (secund). |
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 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. |
Capsules | ovoid, 5 mm, beaks divergent, not papillose. |
ovoid, 4–6 mm, beaks divergent, not papillose. |
Seeds | dark brown, ellipsoid, 0.6 mm. |
brownish black, nearly straight along 1 side, convex on other side, 0.7–0.8 mm. |
2n | = 14, 28. |
|
Heuchera grossulariifolia |
Heuchera bracteata |
|
Phenology | Flowering May–Aug. | Flowering May–Jul. |
Habitat | Grassy hillsides, rocky canyon walls, alpine talus slopes | Shaded rocky ledges and outcrops |
Elevation | 100-3400 m (300-11200 ft) | 1700-3500 m (5600-11500 ft) |
Distribution |
ID; MT; NV; OR; WA
|
CO; WY
|
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.) |
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.) |
Source | FNA vol. 8, p. 103. | FNA vol. 8, p. 97. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | H. cusickii, H. grossulariifolia var. tenuifolia, H. tenuifolia | Tiarella bracteata |
Name authority | Rydberg: Mem. New York Bot. Gard. 1: 196. (1900) | (Torrey) Seringe: in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 4: 52. 1830 , |
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