464 



THE BOOK OF CHOICE FERNS. 



upper side and wedge-shaped at their inferior base, are so closely set as 

 to be frequently imbricated (overlapping). The bold and prominent sori 

 (spore masses) are disposed in a long row on each side of the midrib. 



Fig. 69, Aspiclium mucronatum 



nat. size). 



— Hooker, Species Filicum, iv., p. 9, t. 216. Lowe, Ferns British and 

 Exotic, vL, t. 31. Nicholson, Dictionary of Gardening, i, p. 127. 



