MONOCOTYLEDONES 



315 



aborting. The empty glumes are narrow, the lemma broad, 

 keeled and awned, the palet thin, blunt and keeled. There are 



FIG. 156. Rye inflorescence. 



three stamens and a single ovary with two stigmas (Figs. 

 156, 157). 



History. Rye originated in southern Russia and in the 

 districts north of the Black and Caspian Seas, but we have no 



