BARLEY 



127 



the angle is less than 60 

 degrees. It is usually stated 

 that all barley spikelets are 

 sessile. There are apparently 

 some exceptions in the side 

 spikelets of six-row barley, in 

 which cases they are either 

 pedicellate or their bases are 

 much elongated 1 (Figs. 38 

 and 39). 



119. Distinguishing charac- 

 ters. The kernels are dis- 

 tinguished from those of two- 

 row barley by a distinct twist 

 in the lemma (hull) in two- 

 thirds of them, that is, the 

 side kernels. In those of the 

 right side the twist is toward 

 the right, and toward the left 

 in those of the left side. This 

 twist brings the awns of the 

 side kernels into such position 

 that their flat surfaces are 

 opposite each other and not 

 in the same plane as those 

 of the awn of the middle 

 kernel. The kernels of the 

 middle row also differ in being 

 broadest nearer the apex, the 



1 Harlan (1914, p. 17) mentions 



a Greek form in which the side , : 



spikelets have a pedicel over half FIG. 39. Spike and kernels of 



as long as the adjacent internode. hooded hulless (Nepal) barley. 



