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bract alumroot, Rocky Mountain alumroot

Chiricahua Mountain alum-root

Habit Herbs usually subcaulescent; caudex branched or unbranched. Herbs acaulescent; caudex branched.
Flowering stems

leafy, 6–28(–38) cm, short stipitate-glandular.

25–40 cm, long stipitate-glandular.

Leaves

petiole short to medium stipitate-glandular;

blade reniform or broadly ovate, shallowly 5–7-lobed, 1.5–4 cm, base subcordate or truncate, lobes rounded, margins sharply dentate, apex often mucronate, surfaces short stipitate-glandular or sparsely long stipitate-glandular abaxially, short stipitate-glandular adaxially.

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.

Inflorescences

dense, (secund).

dense, (interrupted).

Flowers

hypanthium weakly bilaterally symmetric, free 0.5–1.5 mm, greenish yellow, narrowly campanulate, 3–5 mm, short stipitate-glandular;

sepals erect, green-tipped, equal, 1–1.5 mm, apex rounded;

petals erect, green, oblanceolate, unlobed, 2 mm, margins entire;

stamens exserted 0.5–1 mm;

styles exserted 1 mm, 1.5–2 mm, 0.1+ mm diam.

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.

Capsules

ovoid, 4–6 mm, beaks divergent, not papillose.

ovoid, 4–5 mm, beaks divergent, not papillose.

Seeds

brownish black, nearly straight along 1 side, convex on other side, 0.7–0.8 mm.

black, fusiform, 0.5 mm.

2n

= 14.

Heuchera bracteata

Heuchera glomerulata

Phenology Flowering May–Jul. Flowering May.
Habitat Shaded rocky ledges and outcrops Shaded, rocky slopes
Elevation 1700-3500 m (5600-11500 ft) 1300-2000 m (4300-6600 ft)
Distribution
from FNA
CO; WY
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; NM
[BONAP county map]
Discussion

Heuchera bracteata occurs in the Rocky Mountains and foothills of northern Colorado and southern Wyoming.

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

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.)

Source FNA vol. 8, p. 97. FNA vol. 8, p. 103.
Parent taxa Saxifragaceae > Heuchera Saxifragaceae > Heuchera
Sibling taxa
H. abramsii, H. alba, H. americana, 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. 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. 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 Tiarella bracteata
Name authority (Torrey) Seringe: in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 4: 52. 1830 , Rosendahl: Minnesota Stud. Pl. Sci. 2: 155. (1936)
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