(2) Northern Woodsia. Alpine Woodsia
Woodsia Alpìna. Woodsia Hyperbòrea
Fronds narrowly lanceolate, two to six inches long, smooth above, somewhat hairy beneath, pinnate. Pinnæ triangular-ovate, obtuse, lobed, the lobes few and nearly entire. Fruit-dots rarely confluent. Indusium as in Woodsia ilvensis.
Thought by some botanists to be a smooth form of Woodsia ilvensis. It was discovered in the United States by Horace Mann, in 1863, at Willoughby Lake, Vt. Twenty years or more later it was collected by C.H. Peck in the Adirondacks, who supposed it to be Woodsia glabélla. In 1897 it was rediscovered at Willoughby Lake by C.H. Pringle. New York, Vermont, Maine, and British America. Rare.