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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
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
from FNA
NC; SC; VA
[BONAP county map]
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
H. abramsii, H. alba, H. americana, H. bracteata, H. brevistaminea, H. caespitosa, H. caroliniana, H. chlorantha, H. cylindrica, H. eastwoodiae, H. elegans, H. glabra, H. glomerulata, H. grossulariifolia, H. hallii, H. longiflora, H. maxima, H. merriamii, H. micrantha, H. novamexicana, H. parishii, H. parviflora, H. parvifolia, H. pilosissima, H. pubescens, H. pulchella, H. richardsonii, H. rubescens, H. sanguinea, H. villosa, H. wootonii
H. abramsii, H. alba, H. americana, H. bracteata, H. brevistaminea, H. caespitosa, H. chlorantha, H. cylindrica, H. eastwoodiae, H. elegans, H. glabra, H. glomerulata, H. grossulariifolia, H. hallii, H. hirsutissima, H. longiflora, H. maxima, H. merriamii, H. micrantha, H. novamexicana, H. parishii, H. parviflora, H. parvifolia, H. pilosissima, H. pubescens, H. pulchella, H. richardsonii, H. rubescens, H. sanguinea, H. villosa, H. wootonii
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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