John T. Howell 198371944-07-18
United States, California, Colusa, 3 miles west of Williams.
OSC-V-039316Peter F. Zika 241722008-08-28
United States, Oregon, Wasco, south shore of Columbia River, west of Dalles Dam, town of the Dalles., 45.6 -121.145, 22m
OSC-V-039312Richard R. Halse 48191994-08-08
United States, Oregon, Sherman, Columbia River; Rufus., 45.69622 -120.7349, 49m
Richard R. Halse
United States, Washington, Asotin, detailed locality information protected
Wilhelm N. Suksdorf
United States, Washington, Klickitat, detailed locality information protected
OSC-V-039315Peter F. Zika 258132011-10-06
United States, Oregon, Umatilla, s shore of Columbia River, n of Route 730, 3.5 road miles w of Umatilla., 45.91 -119.415, 85m
OSC-V-039313Karen Antell s.n.2004-09-10
United States, Oregon, Union, Ladd Marsh Wildlife Refuge; west of Peach Road between Airport Road and Hwy. 30., 45.26056 -117.96328, 853m
OSC-V-039314Thomas J. Howell s.n.
United States, Oregon, Unknown, Columbia River near the Cascades.
Louis F. Henderson 45531897-08-01
United States, Idaho, [Payette], Payette, S. Idaho.
OSC-V-039311M. A. Flinn s.n.1915-09-30
United States, Oregon, Multnomah, near the "Interstate Bridge"., 45.6102 -122.6799