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Mill Creek alum-root, Parish's alumroot

white alumroot

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

8–40 cm, long stipitate-glandular, viscid.

often leafy, 26–77 cm, short stipitate-glandular.

Leaves

petiole densely long stipitate-glandular;

blade broadly ovate or reniform, deeply 5-lobed, 2–4 cm, base cordate or truncate, lobes rounded, margins dentate, apex obtuse, surfaces long stipitate-glandular, viscid.

petiole glabrous or short stipitate-glandular;

blade broadly ovate to cordate, shallowly 5-lobed, 4.5–9 cm, base cordate or nearly truncate, lobes rounded to widely ovate, margins dentate, apex acute or obtuse, surfaces glabrous or sparsely stipitate-glandular, at least on veins.

Inflorescences

dense, (secund).

diffuse.

Flowers

hypanthium strongly bilaterally symmetric, free 0.8 mm on abaxial side, 1.2–2 mm on adaxial side, weakly inflated, pink to reddish, narrowly campanulate, 3.5–6 mm, short stipitate-glandular proximally, long stipitate-glandular distally;

sepals erect, green-tipped, unequal, 0.5–1 mm on abaxial side, 1.5–2 mm on adaxial side, apex rounded;

petals spreading, pink, narrowly oblanceolate, unlobed, (unequal, shorter on abaxial side, resembling filaments), 2–3 mm (equaling or longer than sepals), margins entire;

stamens exserted 1.5 mm;

styles exserted 0.5–1.5 mm, 1.5–2.5 mm, 0.1+ mm diam.

hypanthium moderately bilaterally symmetric, free 3.5–4.5 mm, green, campanulate, abruptly inflated distal to adnation to ovary, 7.5–11 mm, short stipitate-glandular;

sepals spreading, green-tipped, equal, 3–4 mm, apex rounded (sinuses narrower than petals);

petals inflexed, white, broadly spatulate, unlobed, 2.8–3.5 mm, margins fimbriate;

stamens 2 mm included to 2 mm exserted;

styles included 0.5–1 mm, 4–6 mm, to 0.1 mm diam.

Capsules

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

ovoid, 9–10 mm, beaks divergent, not papillose.

Seeds

black, fusiform, rounded at 1 end, acute at other, ca. 0.9 mm.

dark brown, ellipsoid, 0.6–1 mm.

Heuchera parishii

Heuchera alba

Phenology Flowering Jul–Aug. Flowering May–Jun.
Habitat Shaded rocky places in yellow pine and red fir forest Shaded or exposed sandstone rock outcroppings, ridges, and peaks
Elevation 1500-3800 m (4900-12500 ft) 1300-1500 m (4300-4900 ft)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
from FNA
VA; WV
[BONAP county map]
Discussion

Of conservation concern.

Heuchera parishii occurs in the San Bernardino Mountains.

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

Of conservation concern.

Heuchera alba occurs on sandstone ridges in the Ridge and Valley Province.

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

Source FNA vol. 8, p. 98. FNA vol. 8, p. 96.
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. parviflora, H. parvifolia, H. pilosissima, H. pubescens, H. pulchella, H. richardsonii, H. rubescens, H. sanguinea, H. villosa, H. wootonii
H. abramsii, 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. villosa, H. wootonii
Synonyms H. alpestris
Name authority Rydberg: in N. L. Britton et al., N. Amer. Fl. 22: 109. (1905) Rydberg: Torreya 26: 31, plate 2. (1926)
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