Tab. IV. 



Fig. 1. PliyllitiN iiiteriiu'dia. r\ A. i\ H.. taken from 

 the spécimens gathered by Treub and Versteeg. 



a. Rhizome with 2 fronds; + i/o X- 



b. Portion of fertile fron.d (sori a little too straight) ; + ^ X- 



c. Single pair of ripe sori; + ^ X- 



d. Transversal section through a pair of ripe sori (the 

 interstice a little narrowed); ib ^ X- 



Fig. 2. Diplora iiitejsrifblia. K#r. 



Transversal section through a ripe sorus, conf. Baker's 

 diagnosis. 



