[Ferns of the Columbia River Gorge of Oregon and Washington]

Rocky Mountain Woodsia, Laurentian Cliff Fern

Woodsia scopulina

Rocky Mountain Woodsia, Laurentian Cliff Fern: Woodsia scopulina

Laurentian cliff fern (possibly ssp. laurentiana) as seen on rocks along the upper trail to McCord Creek, western Columbia River Gorge.........April 22, 2015.

Rocky Mountain Woodsia, Laurentian Cliff Fern: Woodsia scopulina


Ventral surface of a leaflet of Rocky Mountain Woodsia, Laurentian Cliff Fern: Woodsia scopulina

Close-up of the ventral leaflet of Laurentian cliff fern. Note the numerous gland-tipped hairs on the underside of the pinnae.

Paul Slichter