Deciduous perennial, palmately branched, from a stout, scaly rhizome, 15-75 cm tall.
Broadly fan-shaped, 10-75 cm long; stalks reddish-brown to purplish-black; blades more or less palmately-pinnate, set at right angles to the stalks and more or less parallel to the ground, 10-40 cm long, 10-40 cm wide, rounded to kidney-shaped, forked at the bases into 2 recurved-spreading divisions which in turn bear 2-several shorter divisions, the larger divisions with 15-35, alternate, short-stalked
Small plants with small fronds (5 to 15 cm across) and strongly overlapping ultimate segments were described as A. pedatum L. var. subpumilum Wagner. They clearly belong to this species, but no formal nomenclatural transfer has been done yet. This variety is rare on coastal bluffs from northern Vancouver Island south to the Olympic Peninsula, WA.
If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.
Illustration Source: The Illustrated Flora of British Columbia
||Value / Class
Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
of field plots
species was recorded in:
BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in
|CDF(3), CWH(394), ESSF(1), ICH(27), IDF(5), MH(4), SBS(2)|
Source: Klinkenberg 2013
Synonyms and Alternate Names:
Adiantum pedatum subsp. aleuticum (Rupr.) Calder & Roy L. Taylor
Adiantum pedatum subsp. calderi Cody
Adiantum pedatum subsp. subpumilum (W.H. Wagner) Lellinger
Adiantum pedatum var. aleuticum Rupr.
Adiantum pedatum var. subpumilum W.H. Wagner