Species: Thelypteris nevadensis
Encyclopedia of Puget Sound
Delicate, pale green, deciduous fern emerging in a small compact clump from a slender rhizome. The leaves are few, erect to arching, 3-8 dm tall and quite narrow (max. ca 15 cm wide). Leaves are twice-pinnate (twice divided leaflets) with 35-40 opposite or offset leaflet pairs. The upper leaflets are larger and close together, the lower are greatly reduced in size and quite far apart. Spore clusters (sori) are covered by an inconspicuous, horseshoe-shaped cover (indusium) on leaflet undersides (Lorain 1989).
Source: Encyclopedia of Life
Classification
Filicopsida
Filicales
Thelypteridaceae
Thelypteris
NatureServe
Classification
Ecology and Life History
Delicate, pale green, deciduous fern emerging in a small compact clump from a slender rhizome. The leaves are few, erect to arching, 3-8 dm tall and quite narrow (max. ca 15 cm wide). Leaves are twice-pinnate (twice divided leaflets) with 35-40 opposite or offset leaflet pairs. The upper leaflets are larger and close together, the lower are greatly reduced in size and quite far apart. Spore clusters (sori) are covered by an inconspicuous, horseshoe-shaped cover (indusium) on leaflet undersides (Lorain 1989).
Source: Encyclopedia of Life