Juncus interior Wiegand
Family: Juncaceae
inland rush, interior rush
[Juncus interior var. interior Wiegand,  more...]
Juncus interior image
from USDA Plants website  
Etymology: Juncus: the classical Latin name for the rush, possibly from jungere, "to join or bind," because the stems were used for binding
Plants: perennial rush
Conservation Status: Native