Echinochloa walteri (Pursh) A. Heller  
Family: Poaceae
Long-Awn Cock's-Spur Grass,  more...
[Echinochloa crus-galli var. hispida Farw.,  more]
Echinochloa walteri image
Paul Rothrock  
The National Science Foundation
This project made possible by National Science Foundation Award 1410069