[Sedges: The Genus Carex in the Columbia River Gorge of Oregon and Washington]

Close-up of the perigynia of Columbia sedge as seen along the upper shoreline along Mirror Lake, Rooster Rock State Park............October 8, 2012.

Close-ups of the inflorescence of Columbia sedge as seen along the upper shoreline along Mirror Lake, Rooster Rock State Park............October 8, 2012.