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Dryas octopetala L.
Eightpetal mountain-avens, Eight-petal mountain-avens, Mountain dryas, White mountain-avens
Synonyms: Dryas octopetala ssp. hookeriana, Dryas hookeriana
USDA Symbol: droc
USDA Native Status: Native to U.S.
This slow-growing perennial forms mats up to 3 ft. wide and 8 in. tall. A small, prostrate plant often in large patches, the woody stems rooting, with 1 cream or white flower at end of each erect, leafless flower stalk. The mats appear to be a mass of oval, leathery leaves with rounded teeth. The leaves remain green during winter but deteriorate rapidly as new leaves are produced in spring. Single, white flowers, looking like miniature roses, are borne atop 2-8 in. stems. Summer fruits are fluffy and feathery.
This species often grows with dwarf willows, the prostrate habits of each providing protection against cold, drying winds.
Plant CharacteristicsDuration: Perennial Habit: Herb Flower:
Fruit: Size Class:
Bloom InformationBloom Color: White
Bloom Time: Jun , Jul
AK , CO , ID , MT , OR , UT , WA , WY Canada: BC
, YT Native Distribution:
AK, s. to the n. Cascades of WA & in the Rockies to CO; circumpolar Native Habitat:
Gravel bars; limestone outcrops; open meadows USDA Native Status: L48(N), AK(N), CAN(N),
Growing ConditionsLight Requirement: Sun
Soil Moisture: Dry
Soil Description: Well-drained, sandy or gravelly soils.
Conditions Comments: Not Available
BenefitConspicuous Flowers: yes
Butterflies and Moths of North America (BAMONA)
is a larval host and/or nectar source for:
PropagationDescription: Mountain dryas can be propagated by seed, layers or root divisions. Make divisions in early spring. Seeds are slow and not too sure.
Seed Collection: Not Available
Seed Treatment: Cold, moist stratification for several months substantially increases germination.
Commercially Avail: yes
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Record Modified: 2012-07-31
Research By: TWC Staff