THE FLORA. 



CLASS FILICIN^. 



iTHE FERNS. 



FAM. 1. CYATHEACEE (p. 55.) 



1. Alsophila, Brown. 



1. A. glabra, Booh. 



A tree fern usually 10-20 ft. high. Petiole asperous. 

 Racbis almost black-purple. Fronds 1-2-pinnate with 

 pinnae l|-2f ft. long, pinnules 3-6" by 5-9'' wide glabrous 

 beneath pinnatifid Jth to | the way down. Veins simple or 

 a few bifurcate (Beddoine,). 

 Chota Nagpur, Train. 



Prain (Bengal Plants) say a " a tall tree-fern." I do not recollect any 

 xoild tree-fern in Chota Nagpur. 



FAM. S. POLYPODIACEJE (p. 55.) 



Stem never tall (unless scandent), usually underground, 

 with the leaves scattered, or in a terminal crown. Fronds 

 from simple to decompound. Sori usually dorsal, sometimes 

 marginal. Indusium present or absent, or sori covered by 

 the recurved leaf margin. Sporangia usually Joug-pedicelled 

 with a vertical annulus, which is incomplete^ on one side 

 near the pedicel, where it gives place to more transversely 

 elongated but thinner- walled cells (stomium) across which 

 the sporangium ruptures when ripe. 



' * ^ 



i Only the more striking ferns are described. 



120 



