Cyperus lupulinus subsp. lupulinus  
Family: Cyperaceae
Great Plains flat sedge, sand cyperus, sand sedge
[Cyperus bushii Britton, Cyperus houghtonii var. bushii Torr., Cyperus martindalei auct. non Britton, Scirpus cyperiformis Muhl.]
Cyperus lupulinus subsp. lupulinus image
from USDA Plants website  
Description Not Yet Available
Cyperus lupulinus subsp. lupulinus image
Cyperus lupulinus subsp. lupulinus image
Cyperus lupulinus subsp. lupulinus image
Cyperus lupulinus subsp. lupulinus image