HPSU:V
11836 John W. Reynolds 111 2002-09-04
U.S.A., Oregon, E. shore of Benson Lake, W. of Multnomah Falls.
HPSU:V
11837 John W. Reynolds 47 2000-10-28
U.S.A., California, Central CA, site unknown.
HPSU:V
11838 John W. Reynolds 150 2003-08-30
U.S.A., Washington, Skamania, Columbia River shore at St. Clouds park.
HPSU:V
8616 George Kral 21 1996-08-29
U.S.A., Oregon, Multnomah, Gresham, NE 185th and NE Marine Drive., 45.55666 -122.469524
HPSU:V
8447 George Kral 150 1997-09-01
U.S.A., Oregon, Clackamas, Metro's clear creek ranch., 45.362333 -122.471198
HPSU:V
6983 Richard R. Halse 2481 1981-08-29
U.S.A., Oregon, Linn, Freeway Lakes Country Park, along S.E. Three Lakes Road .6 miles north of its junction with Oak Creek School Road., 70m
HPSU:V
6032 Mary Pfauth s.n. 1993-07-08
U.S.A., Oregon, Washington, Hillsboro, just N of intersection of NW Evergreen Parkway & Rock Creek., 45.545948 -122.886352
HPSU:V
15638 Erin Riggs 42 2010-08-00
U.S.A., Oregon, Multnomah, North Portland, Smith and Bybee Wetlands Natural Area, Slough Trail., 45.62852 -122.759643, 5m
HPSU:V
15639 Erin Riggs 43 2010-08-00
U.S.A., Oregon, Multnomah, North Portland, Smith and Bybee Wetlands Natural Area, Slough Trail., 45.62852 -122.759643, 5m
HPSU:V
19444 Dominic Maze 464 2017-09-07
U.S.A., Oregon, Multnomah, Portland; mainstem Columbia River Slough, "Wapato Slough inlet.", 45.606552 -122.744728
HPSU:V
20221 Jeffrey T. Lesh 1026 2018-07-19
U.S.A., Oregon, Multnomah, Oxbow Park, Sandy River., 45.490524 -122.302593
HPSU:V
20229 Jeffrey T. Lesh 1042 2018-09-04
U.S.A., Oregon, Clackamas, Oregon City. Lower Clackamas River, 400 meters downstream from High Rocks., 45.377875 -122.587593
HPSU:V
21062 Dominic Maze 1180 2019-08-28
U.S.A., Oregon, Multnomah, Portland. Wapato Slough. Inlet of the main channel of the Columbia River Slough., 45.602456 -122.73138, 9m