W. obtusa. 
Woodsia obtusa Torr. 1840. Geol. Report N. Y; 
BIN Yio 2:: 500. Baton). c. 2.160. t 71. ff. 
5-8; in Gray, Man. 691. Underw. in Il. Fl. 1: 
11; Nat. Ferns 122; in Britt. Man. 18. Clute, 1. 
c. 96. Waters, |. c. 280. 
WoopsIa. 
Plants 2-4 dm. high; leaves linear-lanceolate; pinnae 
tapering both ways, 4 cm. or lessin length, ovate-oblong, 
pinnules oblong, obtuse, 1 cm. or less in length, lobes 
rounded, variously toothed ; sori at length confluent. 
In rocky woods, 
21. DENNSTAZDTIA Bernh. 1801. 
In memoriam Dennstaedtt2, autorts Florae Vinar- 
tensis, genert nomen attribut. Bernh. Schrad. Journ. 
Bot. 1800: 2 pt. 124. 
Rootstock slender, creeping. Leaves of delicate text- 
ure. Sorismall, marginal, at the end of the free veinlets. 
Indusium cup-shaped. 
1.D. punctilobula (L. C. Rich.) Moore. ahs 
Nephrodium punctilobulum L. C. Rich.; Michx, 
Fl. 2: 268. 
Dicksonia pilostuscula Willd. 1809. Enum. 1046, 
Eaton, Ferns 1: 339. t. 44; in Gray, Man. 691. 
Clute, Ferns 229. Waters, Ferns 286. 
Dicksonia punctilobula Hook. 1846. Sp. Filic, 1; 
79. Underw. ww Ill, Elon: 12. 
49 
