Maidenhair Fern - Adiantum aleuticum
Other Names:
Adiantum pedatum ssp. aleuticum
Native Species
Global Rank:
G5
State Rank:
S3S4
C-value:
7
Agency Status
USFWS:
USFS:
BLM:
External Links
Plants with a short, stout, horizontal or ascending rhizome. Leaves monomorphic, arching to erect, 10–60 cm long with a glabrous, shiny, black petiole; the blades fan-shaped, appearing palmately divided into several pinnately divided pinnae. Pinnae with 15 to 35 light green, fan-shaped to oblong pinnules, 10–25 mm long with jagged apical margins. Sori crescent-shaped, borne on edges of pinnules, covered by inrolled margins (
Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Wet rock crevices or shallow soil of cliffs, occasional in damp forest, usually in partial shade; montane, subalpine (
Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).