216 



PAGE 



Fronds simple, pinnatifid or pinnate. 

 Veins copiously anastomosing with free 

 included veinlets. 



Gtnus XL. Pkopeltis H. and B. 168 



TRIBE XL GRAMMITIDE^ 



Sori on the back of the lobes, more 

 than twice as long as broad, usually 

 linear. 



Sori arising from the veins over the 

 under-surface of the frond, linear and 

 usually forked. Habit and mode of 

 growth of Chcilanthes. 



Genus XLI. Gyrmogramme Desv. 175 



Veins simple, forming an acute angle 

 with the midrib and having their apices 

 prolonged Into a transverse marginal vein 

 which eventually becomes the receptacle. 

 Sori situated in a longitudinal slit of the 

 margin. Fronds simple, linear, grass-like. 



Gems XLII. Vittaria Sm. ) 77 



Veins reticulated and wholly covered 

 by sporangia, the sori being in fact reticu- 

 lated. Fronds either simple, pinnatifid or 

 pinnate. Genus XLIII. Hemionitts L. 178 



