| GROUP VI | FERTILE AND STERILE FRONDS LEAF-LIKE |
It is found frequently in the valley of the Hudson. Though not related to the Common Bladder Fern (C. fragilis), it has somewhat the same general appearance. Its fronds, however, are usually both broader and longer, and its stalk and pinnæ are slightly downy. Its range does not vary greatly from that of the Common Bladder Fern, but usually it grows in more exposed spots and sometimes basks in strong sunshine.
Meehan says the Blunt-lobed Woodsia is found along the Wissahickon Creek, Penna., on dry walls in shady places. "One of its happiest phases," he continues, "is toward the fall of the year, when the short, barren fronds which form the outer circle bend downward, forming a sort of rosette, in the centre of which the fertile fronds somewhat erectly stand."
The sterile fronds remain fairly green till spring.
56. NORTHERN WOODSIA. ALPINE WOODSIA
Woodsia hyperborea (W. alpina)
Northern New York and Vermont, and northward from Labrador to Alaska, on rocks. Two to six inches long, with stalks jointed near the base.
Fronds.—Narrowly oblong-lanceolate, nearly smooth, pinnate; pinnæ triangular-ovate, obtuse, lobed; lobes few; fruit-dots somewhat scattered; indusium as in W. Ilvensis.}}
This rare little fern has been found by Dr. Peck in the Adirondacks and by Horace Mann, jr., and Mr. Pringle in Vermont. In his delightful "Rem-
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