Heuchera glomerulata |
Heuchera caroliniana |
|
---|---|---|
Chiricahua Mountain alum-root |
Carolina alum-root |
|
Habit | Herbs acaulescent; caudex branched. | Herbs acaulescent; caudex branched. |
Flowering stems | 25–40 cm, long stipitate-glandular. |
leafy, 30–105 cm, short stipitate-glandular. |
Leaves | petiole short stipitate-glandular; blade (purple abaxially, variegated adaxially), ovate to orbiculate, shallowly 5-lobed, 2.5–9 cm, base cordate, lobes rounded, margins dentate, apex obtuse, surfaces short stipitate-glandular, long stipitate-glandular on veins abaxially, short stipitate-glandular and sparsely long stipitate-glandular adaxially. |
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 | dense, (interrupted). |
diffuse. |
Flowers | hypanthium radially symmetric, free 0.8–1.2 mm, yellowish green, campanulate, 3.5–5 mm, densely long stipitate-glandular mixed with short stipitate-glandular; sepals erect or incurved at tip, green-tipped, equal, 1.5–2 mm, apex acute; petals erect, white, narrowly oblanceolate, (clawed), unlobed, 1.5–1.8 mm, margins entire; stamens included 0.5 mm; (filaments strongly incurved, slender, shorter than and almost concealed by anthers); styles included 1 mm, to 0.5 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, 4–5 mm, beaks divergent, not papillose. |
ovoid, 4–7 mm, beaks divergent, not papillose. |
Seeds | black, fusiform, 0.5 mm. |
dark brown, ellipsoid, 0.5–0.8 mm. |
2n | = 14. |
= 14. |
Heuchera glomerulata |
Heuchera caroliniana |
|
Phenology | Flowering May. | Flowering Apr–Jun. |
Habitat | Shaded, rocky slopes | Rich upland woods on base-saturated substrates, basic dikes and basic rock outcroppings |
Elevation | 1300-2000 m (4300-6600 ft) | 30-300 m (100-1000 ft) |
Distribution |
AZ; NM |
NC; SC; VA |
Discussion | Heuchera glomerulata occurs in the Chiricahua and Pinaleno mountains of southeastern Arizona and in New Mexico. (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. 103. | FNA vol. 8, p. 95. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | H. americana var. caroliniana | |
Name authority | Rosendahl: Minnesota Stud. Pl. Sci. 2: 155. (1936) | (Rosendahl Butters & Lakela) E. F. Wells: Rhodora 81: 575. (1979) |
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