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Chiricahua Mountain alum-root

bract alumroot, Rocky Mountain alumroot

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

25–40 cm, long stipitate-glandular.

leafy, 6–28(–38) 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 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.

Inflorescences

dense, (interrupted).

dense, (secund).

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 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.

Capsules

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

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

Seeds

black, fusiform, 0.5 mm.

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

2n

= 14.

Heuchera glomerulata

Heuchera bracteata

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

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.)

Source FNA vol. 8, p. 103. FNA vol. 8, p. 97.
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. 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. 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
Synonyms Tiarella bracteata
Name authority Rosendahl: Minnesota Stud. Pl. Sci. 2: 155. (1936) (Torrey) Seringe: in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 4: 52. 1830 ,
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