[Bulrushes and Tules: The Genera Bolboschoenus, Schoenoplectus, Scirpus and Trichophorum in the Columbia River Gorge of Oregon and Washington]

Two close-up views of floral spikelets of river bulrush as seen at a persistent vernal pond about one mile east of the junction of US 197 and Washington Highway 14 in the eastern Columbia River Gorge.......July 17, 2009.

Two views of the inflorescence of river bulrush as seen at a persistent vernal pond about one mile east of the junction of US 197 and Washington Highway 14 in the eastern Columbia River Gorge........July 17, 2009.

Views of the inundated habitat of river bulrush as seen at a persistent vernal pond about one mile east of the junction of US 197 and Washington Highway 14 in the eastern Columbia River Gorge.........July 17, 2009.