I30 



OSMUNDACEAE 



[CH. 



Fig. 419. A, a leaf of Osmunda Presliana J.Sm. showing a middle zone of fertile pinnae. B, a 

 young plant of Osmunda regalis L. C, a leaf of an adult plant of Osmunda regalis, in which the 

 fertile region is distal. (From Engler and Prantl.) 



