PLATE XXXII. 



PAGE 



Figs. 1, 2. Cladophlebis Ungeki (Dunker) "Ward 255 



1. Poorly preserved fertile pinnae from Dutch Gap, Virginia. 



2. Portion of a somewliat larger sterile frond from same locality. 



Figs. 3, 4. Cladophxebis Albektsii (Dunker) Brongniart 252 



3. Portion of frond from Telegraph Station, Virginia. 



4. Enlarged pinnule of a variant with a dentate margin. 



Figs. 5, 6. Cladophlebis distajsts Fontaine 258 



5. Vinegar Hill, Maryland. 



6. Pinnule of same. X 4. 



531 



