probably Schoenoplectus acutus (Muhl. ex Bigelow) A. Löve & D. Löve var. acutus
[= Schoenoplectus acutus var. occidentalis]
Annotated by C. W. G., 2001. Remarks: N.O. & B. N.

Oregon: Union County: Powder River - Miles Easement Elev. 3200 ft.
Soil/Substrate: Clay Loam.¶Habitat Type: Riparian. Phenology: Fertile.

C. Button V-501, Sep 3, 1997
VALE, Accession: 2587

Schoenoplectus acutus (Muhl. ex Bigelow) A. Löve & D. Löve var. acutus
[= Schoenoplectus acutus var. occidentalis]

Oregon: Union County: POWDER RIVER - MILES EASEMENT Elev. 3200 ft.
Soil/Substrate: CLAY LOAM¶Habitat Type: RIPARIAN Phenology: Fruits.

C. Button V-510, 9-3-1997
BLMVL, Accession: 6247