[Ferns of the Columbia River Gorge]
Rocky Mountain Woodsia, Laurentian Cliff Fern

Woodsia scopulina

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.
Paul Slichter