Heuchera caroliniana

(Rosendahl Butters & Lakela) E. F. Wells

Rhodora 81: 575. 1979,.

Common names: Carolina alum-root
Basionym: Heuchera americana var. caroliniana Rosendahl, Butters & Lakela Minnesota Stud. Pl. Sci. 2: 59. 1936
Treatment appears in FNA Volume 8. Treatment on page 95. Mentioned on page 84, 88.

Herbs acaulescent; caudex branched. Flowering stems leafy, 30–105 cm, short stipitate-glandular. Leaves: 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 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, 4–7 mm, beaks divergent, not papillose. Seeds dark brown, ellipsoid, 0.5–0.8 mm. 2n = 14.

Phenology: Flowering Apr–Jun.
Habitat: Rich upland woods on base-saturated substrates, basic dikes and basic rock outcroppings
Elevation: 30-300 m


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.

Selected References


Lower Taxa

... more about "Heuchera caroliniana"
Elizabeth Fortson Wells +  and Barbara Greene Shipes +
(Rosendahl Butters & Lakela) E. F. Wells +
Heuchera americana var. caroliniana +
Carolina alum-root +
N.C. +, S.C. +  and Va. +
30-300 m +
Rich upland woods on base-saturated substrates, basic dikes and basic rock outcroppings +
Flowering Apr–Jun. +
Heuchera caroliniana +
Heuchera +
species +