152 



GEEEXHOUSE PEEKS. 



Fig. 69. Onychium lucidutn. (Parts of barren and fertile fronds 

 natural size, and a smaller portion of a fertile one magnified.) 



PHYMATODES. 



P. Billardieri and P. pustulata will be found described 

 under the name Drynaria, by which, they are more commonly 

 known. 



PLATYCEEIUM. 



P. alcicorne, the common Elk's-horn Fern, succeeds very 

 well, but does not often produce fructification in a cool house. 

 For a description and mode of culture see Stove Ferns. 



PLATYLOMA. 



From platys, broad, and loma, margin. It is well named, 

 as the spore-masses form a broad margin to the under side of 

 the frond. Allied to Pteris ; not very distinct from Pellcea, 



