Carex albicans var. albicans  
Family: Cyperaceae
blunt-scaled oak sedge, dry woods sedge, oak sedge, white-tinge sedge
[Carex artitecta Mack., Carex artitecta var. subtilirostris Mack., Carex emmonsii var. muhlenbergii Dewey ex Torr., Carex nigromarginata var. muhlenbergii Schwein., Carex varia "Muhl. ex Willd., non Host"]
Carex albicans var. albicans image
from USDA Plants website  
Carex albicans var. albicans image
Carex albicans var. albicans image
Carex albicans var. albicans image
Carex albicans var. albicans image