568 MISC. PUBLICATION 200, U. S. DEPT. OF AGRICULTURE 



FlGUBE 1186.-^4, Enochloa gracilis. Plant, X Yi\ two views of spikelet, and floret, X 10. (McDougal, 

 Ariz.) B, E. contracta. Panicle, X 1; floret, X 10. (Hitchcock 13420, Tex.) 



