''Diarrhena obovata'', the hairy beakgrain or obovate beakgrain, is a species of flowering plant in the cool-season grass subfamily Pooideae. It is native to the north-central and east-central United States. A perennial reaching , it is typically found growing in rich woodlands.

References

Pooideae Endemic flora of the United States Flora of Minnesota Flora of Wisconsin Flora of Illinois Flora of Kentucky Flora of Tennessee Flora of West Virginia Flora of Virginia Flora of Pennsylvania Flora of New York (state) Plants described in 1991 {{Pooideae-stub