207 
GRYPTOGAMIA, FILICES. 
390. POLYPODIUM. Swartz, Synop. filic. 3. 
Sori (or small clusters of capsules) roundish^ 
scattered. Indusium none. — 
1. P. frond deeply piniiatifid; segments linear-lan- vuigare. 
ceolate, obtuse, creniilate, near together, upper 
ones gradually smaller^ sorx solitary^ caudex 
paleaceous. — JVilld, 
Icon. Schk. filic. t. 11. 
Common Polypody. 
^ On rocks in the neighbourhood, and in woods; common. 
Perennial. July. 
2. P. fronds deeply pinnatifid ; segments lanceo- virginicum. 
late, obtuse, very entire, near together, upper 
ones gradually smaller^ sorse solitary^ caudex 
naked. — Willd. 
Icon. Petiv. filic. t. 7. f. 9. Plum. Amer. t. 
36. filic. t. 77. (Pursh.) 
Virginia Polypody. 
Resembles the preceding very much, and grows with it. It 
is perhaps no more than a variety. Perennial. July. 
3. P. fronds bipinnate, somewhat smooth ; pinnae hexagonopte^ 
two, deflexed below; segments lanceolate, ob-^ 
tuse, ciliated — of the lower pinn^ incised-cre- 
nate, of the upper very entire, lower ones ad- 
nate-decurrent ; sorse minute, solitary. — Willd. 
Icon. Pluk. aim. t. 284. f. 2. Schk. filic. t. 
20. b. 
In damp shady woods, among other ferns ; rare. Perennial, 
July. 
