Heuchera sanguinea |
Heuchera caespitosa |
|
---|---|---|
coralbells |
tuft alumroot, urn-flower alum-root |
|
Habit | Herbs acaulescent; caudex branched. | Herbs subcaulescent; caudex branched. |
Flowering stems | 20–40 cm, short and sometimes long stipitate-glandular. |
10–40 cm, long stipitate-glandular. |
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 long stipitate-glandular; blade reniform or orbiculate, shallowly 5-lobed, 1–4 cm, base cordate or truncate, lobes rounded, margins dentate, apex obtuse, surfaces short or long stipitate-glandular. |
Inflorescences | moderately dense to diffuse. |
|
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 strongly bilaterally symmetric, free 2–2.8 mm on adaxial side, pink to purplish, narrowly campanulate, widening at mouth, 4–7 mm, short stipitate-glandular proximally, long stipitate-glandular distally; sepals spreading, green-tipped, equal, 1–1.2 mm, apex rounded; petals spreading, white, oblanceolate, (clawed), unlobed, 2–2.5 mm (longer than sepals), margins entire; stamens included 0.5 mm to exserted 0.5 mm; styles to 0.5 mm included, 1.5 mm, 0.1+ mm diam. |
Capsules | ovoid, 4.5–6 mm, beaks divergent, not papillose. |
ovoid, 4 mm, beaks divergent, not papillose. |
Seeds | dark brown, ellipsoid, 0.5–0.6 mm, bluntly spiny. |
dark brown, ellipsoid, 0.7 mm. |
Inflorescenses | moderately dense. |
|
Heuchera sanguinea |
Heuchera caespitosa |
|
Phenology | Flowering Mar–Oct. | Flowering Jun. |
Habitat | Moist, shaded rocks | Shaded, rocky slopes |
Elevation | 1200-2600 m (3900-8500 ft) | 1900-2300 m (6200-7500 ft) |
Distribution |
AZ; NM; Mexico (Chihuahua)
|
CA
|
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.) |
Of conservation concern. Heuchera caespitosa occurs in the western Transverse Ranges in Kern, San Bernardino, Tulare, and Ventura counties, and in the Outer South Coast Ranges, southern Sierra Nevada foothills, and southern Sierra Nevada. It is very similar to H. abramsii, H. brevistaminea, H. hirsutissima, and H. pulchella; the group needs thorough phylogenetic analysis. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 8, p. 100. | FNA vol. 8, p. 100. |
Parent taxa | Saxifragaceae > Heuchera | Saxifragaceae > Heuchera |
Sibling taxa | ||
Synonyms | H. sanguinea var. pulchra | |
Name authority | Engelmann: in F. A. Wislizenus, Mem. Tour N. Mexico, 107. 1848 , | Eastwood: Proc. Calif. Acad. Sci., ser. 2, 6: 426, plate 57. (1896) |
Web links |