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alum root, hairy alumroot, Parish's alumroot, seaside alum-root

bract alumroot, Rocky Mountain alumroot

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

3–22 cm, short to long stipitate-glandular, viscid.

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

Leaves

petiole (7–22 cm), densely long stipitate-glandular;

blade suborbiculate or pentagonal or septagonal, deeply 5–7-lobed, 8–9 cm, base deeply cordate, lobes rounded, margins crenate, apex obtuse, surfaces moderately to densely long stipitate-glandular, viscid.

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.

dense, (secund).

Flowers

hypanthium radially symmetric, free to 1.6 mm, pink, hemispheric, 2–3 mm, densely long stipitate-glandular;

sepals erect, green- or red-tipped, equal, 0.8–2.2 mm, apex obtuse;

petals spreading, white or pink, oblong-elliptic, unlobed, 1.5–3.5 mm, margins entire;

stamens exserted 0.4–2.3 mm;

styles exserted 1–1.4 mm, 1.5–2 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, 2.5–10 mm, beaks divergent, not papillose.

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

Seeds

black, broadly fusiform, 0.6 mm.

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

2n

= 14, 28.

Heuchera pilosissima

Heuchera bracteata

Phenology Flowering Mar–Jun. Flowering May–Jul.
Habitat Pine belts on coastal bluffs on sandstone or decomposed granite Shaded rocky ledges and outcrops
Elevation 10-500 m (0-1600 ft) 1700-3500 m (5600-11500 ft)
Distribution
from FNA
CA; OR
[WildflowerSearch map]
[BONAP county map]
from FNA
CO; WY
[WildflowerSearch map]
[BONAP county map]
Discussion

Heuchera pilosissima occurs in the marine zone and in the Coast Ranges.

(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. 93. 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. glomerulata, H. grossulariifolia, H. hallii, H. hirsutissima, H. longiflora, H. maxima, H. merriamii, H. micrantha, H. novamexicana, H. parishii, H. parviflora, H. parvifolia, 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 H. hemisphaerica, H. pilosissima var. hemisphaerica Tiarella bracteata
Name authority Fischer & C. A. Meyer: Index Seminum (St. Petersburg) 5: 36. 1838 , (Torrey) Seringe: in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 4: 52. 1830 ,
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