Adiantum aleuticum

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Western maidenhair fern
Adiantum pedatum 09905.JPG
Western Maidenhair (Adiantum aleuticum)
Conservation status

Secure (NatureServe)
Scientific classification
Kingdom: Plantae
Division: Pteridophyta
Class: Pteridopsida
Order: Polypodiales
Family: Pteridaceae
Subfamily: Vittarioideae
Genus: Adiantum
Species: A. aleuticum
Binomial name
Adiantum aleuticum
(Rupr.) C.A.Paris
Synonyms

A. pedatum var. aleuticum

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.

Description[edit]

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.[1]

Taxonomy[edit]

All species in the genus Adiantum are currently placed in the subfamily Vittarioideae of family Pteridaceae on the basis of molecular phylogenetic evidence.[2] Formerly classified as A. pedatum var. aleuticum, it was shown to be a separate species in 1991.[3]

See also[edit]

References[edit]

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