Echinochloa muricata var. microstachya Wiegand  
Family: Poaceae
rough barnyard grass
[Echinochloa crus-galli var. frumentacea (L.) P.Beauv., Echinochloa microstachya (Wiegand) Rydb., Echinochloa muricata var. wiegandii (P.Beauv.) Fernald, Echinochloa pungens var. microstachya (Poir.) Rydb., Echinochloa pungens var. multiflora (Poir.) Rydb., Echinochloa pungens var. wiegandii (Poir.) Rydb., Echinochloa wiegandii (Fassett) McNeill & Dore]
Echinochloa muricata var. microstachya image
from USDA Plants website  
Etymology: Echinochloa: Greek echinos for "hedgehog" and chloa for grass, referring to allusion of bristling awns
Plants: annual grass
Conservation Status: Native
Echinochloa muricata var. microstachya image
Echinochloa muricata var. microstachya image
Echinochloa muricata var. microstachya image
Echinochloa muricata var. microstachya image