3 
2-5 inches long ; fronds dimorphous, twice or thrice pinnate. Ulti- 
mate divisions of the sterile frond broad and blunt, of the fertile 
frond narrow and lanceolate ; sori finally forming a continuous line 
covered by the broad, membranaceous, reflexed margin of the fer- 
tile segment. Damp and shaded calcareous rock#. Rare. The 
known New England* stations of this fern are nearly all in Vermont : 
Norwich, Dr. Edward Hyde ; Mt. Willoughby, Mt. Mansfield; Sun- 
derland, Mass , Prof. Tuckerman; A. T. Beals. 
May be expected in the western portions of Mass, and Conn., 
and in Northern N. H. Grows in the Himalaya mountains, and a 
nearly allied form is found in Europe. Middle of July. 
Illustrated in Gray’s Manual. 
68. P. atropurpurea (L. ) Link. Dakk Purple Cliff Brake. 
Stipes dark purple and shining, 2 6 inches long ; laminae 4-12 inch- 
es long, coriaceous, pinnate or below bipinnate ; divisions very va- 
riable in form ; sporangia forming a continuous marginal line, cov- 
ered by the slightly altered involute edge of the ultimate segments. 
Dry calcareous rocks. Mt. Horr ; Snake mountain, Weybridge, 
Vt , Eggleston. Deerfield, Leverett and Greenfield, Mass., and not 
rare in western Conn. Late in July. 
Both species of Pellaea are apparantlv confined to that portion 
of New England west of the Connecticut river. North American. 
Illustrated by Meehan, Series n, Vol. 2. 
Tribe VH, BLECHNEydE. 
Sori dorsal, linear, on veins parallel to the midveins of the ulti- 
mate divisions of the frond, and furnished with special in- 
dusia opening on the inner side. In our section one ge- 
nus, with two species. 
WOODWARDIA J E. Smith 
85. W. Virginica (L ) Smith Chain Fern. Fronds 2-4 
feet long ; laminae glabrous, lanceolate, once pinnate, with remote 
pinnatifid pinnae ; sori at length confluent ; sterile and fertile 
