PROLIFEROUS FERNS 25 



produced, and then small fronds appear, and in this 

 species it is very difficult to detach the bulbils without 

 damaging the fronds ; and unless specially wanted for 

 increasing the stock, they should be left on the plants. 



In the Pterises we have a few examples, or rather in 

 the sub-genus Doryopteris, palmata and pedata are ex- 

 amples, but these may be more readily propagated from 

 spores, though, usually, those which produce bulbils are 

 slow to germinate from spores. 



