PLATE VII. 



Figs. 1-4. Acrostkhides linnmcsfolius (Bimb. species). Pages 25 to 29. 



Fig. 1. Ultimate pinuoe from the upper part of a large compound pinna, showing the pinnules, 



all sterile. 

 Fig. 2. Ultimate pinnae from the lower part of the same compound pinna from which Fig. 1 was 



taken, showing fertile and sterile pinnules on the same pinna. 

 Fig. 3. Tip of a fertile ultimate pinna. 

 Fig. 4. Portion of a fertile ultimate pinna, showing the transition in form from sterile to fertile 



pinnules. 

 Fig. 5. Acrostkhides microphyllus, spec. dot. Pages 33 to 34. 

 Fig. 5. Shows a portion of the lower part of the frond. 



