Heuchera hirsutissima |
Heuchera caroliniana |
|
---|---|---|
shaggyhair alum-root |
Carolina alum-root |
|
Habit | Herbs acaulescent; caudex branched. | Herbs acaulescent; caudex branched. |
Flowering stems | 10–40 cm, short stipitate-glandular and sparsely long stipitate-glandular. |
leafy, 30–105 cm, short stipitate-glandular. |
Leaves | petiole long stipitate-glandular; blade orbiculate to reniform, shallowly 5-lobed, 1–1.5 cm, base cordate, lobes rounded, margins dentate, apex obtuse, surfaces long stipitate-glandular. |
petiole glabrous or short stipitate-glandular; blade broadly ovate, shallowly 5-lobed, 3–10.5 cm, base cordate or nearly truncate, lobes rounded or ovate, margins dentate, apex acute or obtuse, surfaces glabrous or minutely stipitate-glandular on veins abaxially, glabrous or short stipitate-glandular adaxially. |
Inflorescences | diffuse. |
|
Flowers | hypanthium strongly bilaterally symmetric, free 0.8 mm on abaxial side, 1.8 mm on adaxial side, pink, narrowly cylindric, 5–6.5 mm, short stipitate-glandular proximally, densely long stipitate-glandular distally; sepals spreading, green- and red-tipped, unequal, 0.5–1.5 mm on abaxial side of hypanthium, to 0.5 mm on adaxial side, apex rounded; petals spreading, white, oblanceolate, (clawed), unlobed, 2–2.5 mm (equaling or longer than sepals, rarely shorter), margins entire; stamens exserted to 0.5 mm; styles included to 0.5 mm, 1.5 mm, 0.1+ mm diam. |
hypanthium weakly bilaterally symmetric, free 1.3–2.5 mm, green, subglobose, abruptly inflated distal to adnation to ovary, 2.8–4.5 mm, short stipitate-glandular; sepals erect, green-tipped, equal, 0.4–1.5 mm, apex rounded; petals erect, white or pink, broadly spatulate, unlobed, 0.6–1 mm, margins entire; stamens exserted 0.2–1.5 mm; styles included from 1 mm to exserted 1.1 mm, 1–3.5 mm, to 0.1 mm diam; (stigmas from 0.5 mm included to 1.1 mm exserted). |
Capsules | ovoid, 3 mm, beaks divergent, not papillose. |
ovoid, 4–7 mm, beaks divergent, not papillose. |
Seeds | dark brown, ellipsoid, ca. 0.7 mm. |
dark brown, ellipsoid, 0.5–0.8 mm. |
Inflorescenses | dense. |
|
2n | = 14. |
= 14. |
Heuchera hirsutissima |
Heuchera caroliniana |
|
Phenology | Flowering Jul–Aug. | Flowering Apr–Jun. |
Habitat | Fir and subalpine forest | Rich upland woods on base-saturated substrates, basic dikes and basic rock outcroppings |
Elevation | 2100-3500 m (6900-11500 ft) | 30-300 m (100-1000 ft) |
Distribution |
CA
|
NC; SC; VA |
Discussion | Of conservation concern. Heuchera hirsutissima is known from Mount San Jacinto and the San Jacinto Mountains of Riverside County and possibly the San Bernardino Mountains of San Bernardino County. It resembles H. caespitosa and H. elegans, except for its densely villous hypanthium and minute adaxial sepals. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
The geographic range of Heuchera caroliniana is contiguous with and appears to be a southern extension of that of H. pubescens. Heuchera americana var. americana occurs in counties adjacent to the range of H. caroliniana but they are sympatric only along the boundary; intergradation between the two is infrequent. Mixed populations of H. caroliniana and H. americana var. americana have not been seen. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 8, p. 99. | FNA vol. 8, p. 95. |
Parent taxa | Saxifragaceae > Heuchera | Saxifragaceae > Heuchera |
Sibling taxa | ||
Synonyms | H. americana var. caroliniana | |
Name authority | Rosendahl: Minnesota Stud. Pl. Sci. 2: 110. (1936) | (Rosendahl Butters & Lakela) E. F. Wells: Rhodora 81: 575. (1979) |
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