70 



THE UNIVERSITY OF OKLAHOMA 



be considered as a marginal limit of its northern range in the 

 Austro-riparian zone (eastern area,) crossing, and confined to, the 

 extreme southeastern counties of the state in its Deciduous Forest, 

 and Transition Forest belts. 



Figure 1 



An epiphytic fern, originally identified in the Oklahoma crypto- 

 gamic flora March, 1914, Blue Falls, Bryan county. The pen study 

 is from specimens of this culture taken after eight years observa- 

 tion, December 2, 1922, and shows fully expanded, and partially 

 desiccated fronds, branching root-stocks, and mossy sub-stratum 

 superposed upon the bark of the bur-oak {Qiiercus macrocarpa). 



