72 



Botanical Section 



[pt I 



''Seed." Outer palea about 9 mm. long, white and membran- 

 ous at its apex which is 2-4 toothed ; bearing a slightly twisted 

 and "kneed" dorsal awn. Inner palea very thin, flat and fringed. 

 Rachilla long, slender, cylindrical, and bearing numerous long 

 silky hairs. The base of the " seed " is surrounded by a large 

 "brush" of hairs. (Fig. 61.) 



A. pubescens, Huds. A marked variety of the above. The 

 lower leaves and sheaths are distinctly hairy, and less harsh to the 

 touch. The outer palea is rather shorter, and the rachilla longer 

 and more feathered with hairs. The panicle also is more silvery 

 in appearance. 



Fig. 55. "Seed" of Arrhenatherum avenac.um, Beauv. x 10. 

 The grain is enclosed within the upper pair of palese. 



