Aleutian Maidenhair Plant Information

Aleutian Maidenhair grows in the following 17 states:

Alaska, Arizona, Colorado, Idaho, Maryland, Montana, Pennsylvania, Utah, Vermont, Wyoming, Oregon, West Virginia, California, Maine, Michigan, Nevada, Washington

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The following information is licensed as Creative Commons content from Wikipedia and the USDA.
More information about Aleutian Maidenhair may be found here, or from the US Department of Agriculture.

Adiantum aleuticum (western maidenhair fern, Aleutian maidenhair) is a species of fern in the genus Adiantum, native mainly to western North America from the Aleutian Islands of Alaska, south to Chihuahua, and also locally in northeastern North America from Newfoundland south to Maryland.

The fronds grow to 15-110 cm high, and are fan-shaped, light to medium green with dark brown to black stems. It is deciduous. It prefers fertile, moist soil in rock crevices near streams, from sea level in the north of its range, up to 3,200 m altitude in the south of its range. It tolerates serpentinite rock well, and is confined to this mineral-rich rock in some areas.
Other common names include serpentine maidenhair and five-fingered fern.
Numerous cultivars have been developed for garden use, of which 'Subpumilum' has gained the Royal Horticultural Society's Award of Garden Merit.
Formerly classified as A. pedatum var. aleuticum, it was shown to be a separate species in 1991.

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