Echinochloa oplismenoides (Fourn.) A.S. Hitchc.  
Family: Poaceae
Chihuahuan Cock's-Spur Grass,  more...
[Echinochloa crus-pavonis var. decipiens (Wiegand) Fassett,  more]
Echinochloa oplismenoides image
© Smithsonian Institution, National Museum of Natural History, Department of Botany