PLATE XI. 



Sphenopteris Wardiana D. W. 



(Page 39.) 



Fig. 1. Small compact piniup. U. S.Nat. Mus., 5617. 

 In. Enlarged detail of portion of tlie same. x2. 



2. Segment from one side of middle portion of a secondary ( ?) pinna. U. S. Nat. Mus., 5615. 

 2a. Enlarged detail from the same showing three ultimate pinn;T? with form of pinnules and nerva- 

 tion. x2. 



Sphenopteris mixta Scliimp. 



(Page 85.) 



Fig. 3. Upper part of a primary pinna, showing compact pinnules near the top, and pinnatifid 

 pinnules, developing as tertiary pinna;, in the lower portion. U. S. Nat. Mus., 5712. 



