PLATE XXIX. 



PAGE 



Figs. 1, 2. Cladophlebis Browniajsta (Dunker) Seward 243 



1. Sterile frond, Vinegar Hill, Marj'land (after Fontaine). 



2. Fertile frond, same locality (after Fontaine). 



Fig. 3. Cladophlebis constricta Fontaine 246 



Specimen from Chinkapin Hollow, Virginia (after Fontaine). 



Figs. 4-6. Cladophlebis vibginiensis Fontaine 248 



Specimens from Arlington, Maryland (after Fontaine). 



528 



