(6) Rocky Mountain Woodsia. Woódsia Scopulìna
Fronds six to fifteen inches long [smooth], lanceolate, pinnatifid. Pinnæ triangular-ovate, the lowest pair shortened. Under surface of the whole frond hispidulous with minute, white hairs and stalked glands. Indusium hidden beneath the sporangia, consisting mostly of a few hair-like divisions.
In crevices of rocks, mountains of West Virginia, Gaspé Peninsula, Rocky Mountains, and westward to Oregon and California.