Fimbristylis puberula
Family: Cyperaceae
chestnut sedge,  more...
Fimbristylis puberula image
from USDA Plants website  
Fimbristylis puberula
Fimbristylis puberula image
Robert H. Read  
Fimbristylis puberula image
from USDA Plants website  
Fimbristylis puberula image
Wisconsin Dept. of Natural Resources