100 



Bulletin V. 



m 



Fig. 69. Fig. 70 



Fig. 69. Hordeu7n sativum, var. vidgare, — Common four-rowed 

 barley. A single "head" or spike. The flowering glumes are 

 terminated by very long and scabrous awns. 



Fig. 70. Hordctun sativu?n, var. hexastichon. — Six- rowed barley. 

 Bj^ a group of three spikelets, the awns partly removed. B, a single 

 spikelet seen from behind, the awn wholly removed. Bi, a single 

 spikelet seen from in front. F, the flower showing the lodicules 

 in front, the stamens, the hairy ovary, one of the sessile plumose 

 stigmas, and a portion of the other. Ki, the fruit seen from in 

 front, small embryo shown near the base. K2^ the same seen from 

 behind, showing the linear hilum. 



