DIPLAZIUM. 129 



GENUS II. 



DIPLAZIUM. SwARTz. 



A SMALL genus, having fronds simple, pinnate, or bi-tripinnate, 

 and from ten to sixty inches in length. 



The veins forked or pinnate, the venules free, differing from 

 Asplenium in being sporangiferous on both sides, (instead of on 

 the superior side only,) constituting binate, linear sori. 



Indusium plane. 



We have no British example. 



