The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

shaggyhair alum-root

hairy alum-root, maple-leaf alum-root

Habit Herbs acaulescent; caudex branched. Herbs caulescent; caudex branched.
Flowering stems

10–40 cm, short stipitate-glandular and sparsely long stipitate-glandular.

10–85 cm, long 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 long stipitate-glandular;

blade rounded-cordate, orbiculate, or oblong, often ± polygonal, deeply (5–)7–9+-lobed, 3–26 cm, base cordate to nearly truncate, lobes ovate to triangular, margins dentate to serrate, apex obtuse to acute, surfaces glabrous or long stipitate-glandular.

Inflorescences

dense to 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 radially symmetric, free 0.2–0.5 mm, white or pink, obconic or subglobose, 1.5–3.6 mm, usually long stipitate-glandular, sometimes sparsely long-stipitate or glabrous;

sepals erect, green-tipped, equal, 0.5–1.7 mm, apex rounded;

petals often coiled, sometimes reflexed, white, linear, lanceolate, or oblanceolate, unlobed, 1–3 mm, margins entire;

stamens exserted 2–2.5 mm;

styles exserted 1.5–2.5 mm, 2–4 mm, to 0.1 mm diam.

Capsules

ovoid, 3 mm, beaks divergent, not papillose.

ovoid, 3–6.4 mm, beaks divergent, not papillose.

Seeds

dark brown, ellipsoid, ca. 0.7 mm.

dark brown, fusiform, 0.5–0.9 mm.

Inflorescenses

dense.

2n

= 14.

Heuchera hirsutissima

Heuchera villosa

Phenology Flowering Jul–Aug.
Habitat Fir and subalpine forest
Elevation 2100-3500 m (6900-11500 ft)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
from FNA
AL; AR; GA; IN; KY; MO; MS; NC; OH; PA; SC; TN; VA; WV
[WildflowerSearch map]
[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.)

Varieties 2 (2 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Key
1. Inflorescences dense to diffuse, internodes in floral branchlets 0.7-3 mm; pedicels 0.9-3 mm; hypanthia obconic or subglobose, long stipitate-glandular; petals 0.1-0.2 mm wide; e of the Prairies.
var. villosa
1. Inflorescences dense, internodes in floral branchlets 0.3-1 mm; pedicels 0.2-0.9 mm; hypanthia subglobose, glabrous or sparsely long stipitate-glandular; petals 0.2-0.4 mm wide; Arkansas.
var. arkansana
Source FNA vol. 8, p. 99. FNA vol. 8, p. 89.
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. caroliniana, 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. wootonii
Subordinate taxa
H. villosa var. arkansana, H. villosa var. villosa
Name authority Rosendahl: Minnesota Stud. Pl. Sci. 2: 110. (1936) Michaux: Fl. Bor.-Amer. 1: 172. 1803 ,
Web links