554 



PTERIDOSPERMS, ETC. 



[CH. 



Odontopteris osmundaeformisY, is often decurrent on the axis of the pinna. 

 The basal pinnule of each pinna is frequently attached by a contracted 

 base, and the lamina may differ in form from that of the normal segments. 



Fig. 3G5. Odontopteris minor, Bxoxign. (Rather less than ^ nat. size. After 

 Zeiller.) [The pinnules are omitted in the right-hand branch.] 

 1 Potoni^ (93) A. PI. xv. 



