PLATE XXXVI. 



PAGE 



Figs. 1-6. Onychiopsis nervosa (Fontaine) Berry 279 



1, 2. Specimens from Chinkapin Hollow, Virginia (after Fontaine). 

 3, 4. Specimens from Federal Hill, Maryland (after Fontaine). 

 5, 6. Specimens from near Glymont, Maryland. 



Figs. 7-9. Onychiopsis psilotoides (Stokes and Webb) Ward 274 



Showing variation in form and venation of three corresponding pin- 

 nules from different fronds. X 3. 



535 



