PLATE LXXIV. 



PAGE 



Fig. 1. Aethkotaxopsis expansa Fontaine 439 



Leafy twigs showing characteristic habit. Potomac Run, Virginia. 



Figs. 2, 3. Sphenolepis Ktjeeiana (Dunker) Schenk 432 



2. 72-Mile post, Virginia. 



3. Near Potomac Run, Virginia. 



573 



