Explanation of Figures. 



Plate XXX. 



Pig. 1. Three plants of Imperata arundinacea growing in Dehra Dun Experimental 

 Garden. Note the young leafy culms in the foreground springing from the 

 wide-spreading subterranean stolons. 

 Photograph taken October 1909. 

 ,, 2. Another group of the same in Dehra Dun Experimental Garden. The culm 

 on the right which originated from a subterranean stolon in May 1909 has 

 produced a flowering panicle. 

 Photograph taken December 1909. 

 ,, 3. Panicles of the same. The three central panicles were collected from a grass 

 lawn where the plants had been dwarfed by grass-cutting. The outermost 

 panicle on the right and the two outermost panicles on the left belong to the 

 swamp-form and were collected in a marsh. The remaining three panicles 

 belong to the ordinary savannah form of the species. 



