Heuchera maxima |
Heuchera sanguinea |
|
---|---|---|
island alumroot, jill-of-the-rocks |
coralbells |
|
Habit | Herbs caulescent; caudex branched. | Herbs acaulescent; caudex branched. |
Flowering stems | 9–30 cm, short or long stipitate-glandular, viscid. |
20–40 cm, short and sometimes long stipitate-glandular. |
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 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. |
Inflorescences | dense. |
moderately dense to diffuse. |
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 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. |
Capsules | ovoid, 4–8 mm, beaks divergent, not papillose. |
ovoid, 4.5–6 mm, beaks divergent, not papillose. |
Seeds | black, broadly fusiform, 0.4 mm. |
dark brown, ellipsoid, 0.5–0.6 mm, bluntly spiny. |
2n | = 14. |
|
Heuchera maxima |
Heuchera sanguinea |
|
Phenology | Flowering Mar–May. | Flowering Mar–Oct. |
Habitat | Exposed cliffs | Moist, shaded rocks |
Elevation | 0-500 m (0-1600 ft) | 1200-2600 m (3900-8500 ft) |
Distribution |
CA
|
AZ; NM; Mexico (Chihuahua)
|
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.) |
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.) |
Source | FNA vol. 8, p. 93. | FNA vol. 8, p. 100. |
Parent taxa | Saxifragaceae > Heuchera | Saxifragaceae > Heuchera |
Sibling taxa | ||
Synonyms | H. sanguinea var. pulchra | |
Name authority | Greene: Bull. Calif. Acad. Sci. 2: 149. 1886 , | Engelmann: in F. A. Wislizenus, Mem. Tour N. Mexico, 107. 1848 , |
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