Heuchera micrantha Douglas ex Lindl.

Crevice alumroot (en)

Species

Angiosperms > Saxifragales > Saxifragaceae > Heuchera

Characteristics

Herbs caulescent; caudex branched. Flowering stems 6-57 cm, short to long stipitate-glandular or glabrous, viscid. Leaves: petiole glabrous or sparsely to densely short to long stipitate-glandular; blade orbic-ulate to polygonal, shallowly to deeply 5-7(-9)-lobed, 2.5-10 cm, base cordate, lobes rounded, margins dentate, apex rounded or obtuse, surfaces glabrous or short to long stipitate-glandular, viscid. Inflorescences diffuse. Flowers: hypanthium radially symmetric, free to 1.5 mm, greenish white, often tinged with red, obconic to hemispheric, broadly turbinate, or campanulate, 1-4.9 mm, long stipitate-glandular, sometimes short stipitate-glandular proximally; sepals spreading to nearly erect, green-or red-tipped, equal, 0.5-1.8 mm, apex rounded to acute or mucronate; petals often coiled, white or pale pink, oblanceolate, (narrowly clawed), unlobed, 1.6-3.3 mm (2-3 times as long as sepals), margins entire; stamens exserted to 3 mm; styles exserted to 2.5 mm, 0.2-4.2 mm, to 0.1 mm diam. Capsules ovoid, 3-8.5 mm, beaks divergent, not papillose. Seeds black, broadly ellipsoid, (not curved), 0.5-0.8 mm.
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A perennial plant. It grows 45-60 cm high. It spreads 30-40 cm wide. The leaves are hairy with grey marbling. They are broad with shallow lobes. They are heart shaped and 8 cm long. The flowers are cream or white in open sprays.
Life form perennial
Growth form herb
Growth support -
Foliage retention evergreen
Sexuality hermaphrodite
Pollination entomogamy
Spread -
Mature width (meter) 0.3 - 0.4
Mature height (meter) 0.7
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

It is a temperate plant. It grows in gravelly banks and rock crevices. In Canada it grows from low altitudes to sub-alpine regions. It is frost hardy. It suits hardiness zones 5-9.
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Moist banks of humus and rocks in woodland below 600 metres.
Light 4-9
Soil humidity 4-6
Soil texture 3-6
Soil acidity 4-7
Soil nutriment -
Hardiness (USDA) 5-9

Usage

The leaves are boiled or steamed and eaten. They can be dried and stored. The roots are chopped and added to soups and pies.
Uses dye environmental use medicinal wood
Edible leaves roots
Therapeutic use Dermatological Aid (leaf), Dermatological Aid (root), Liver Aid (root), Oral Aid (root), Throat Aid (root), Unspecified (root), Dermatological Aid (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by divisions or seedlings.
Mode divisions seedlings
Germination duration (days) 10 - 60
Germination temperacture (C°) 18 - 21
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Leaf

Heuchera micrantha leaf picture by Daniel Shyles (cc-by-sa)
Heuchera micrantha leaf picture by Laurie Pitman (cc-by-sa)
Heuchera micrantha leaf picture by Liliana Liliana (cc-by-sa)

Flower

Heuchera micrantha flower picture by Danny Hayes (cc-by-sa)

Distribution

Heuchera micrantha world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:30041126-2
WFO ID wfo-0001135503
COL ID 3LFR6
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Heuchera barbarossa Heuchera micrantha f. glaberrima Heuchera glaberrima Heuchera nuttallii Heuchera micrantha var. micrantha Heuchera micrantha var. glaberrima Heuchera micrantha var. nuttallii Heuchera micrantha

Lower taxons

Heuchera micrantha var. diversifolia Heuchera micrantha var. erubescens Heuchera micrantha var. hartwegii