HPSU:V
9409 M. Leuno ML49 1973-08-05
U.S.A., Oregon, Multnomah, west of amusement park along Willamette river, 45.472049 -122.662911, 3m
HPSU:V
8374 George Kral 140 1997-08-30
U.S.A., Oregon, Multnomah, North Portland, E of St. Johns Landfill access road., 45.610886 -122.752175
HPSU:V
9145 Georgia Mason 9595 1973-08-08
U.S.A., Oregon, Linn, 4-5 miles SE of Eugene
HPSU:V
8373 George Kral 140 1997-08-30
U.S.A., Oregon, Multnomah, North Portland, E of St. Johns Landfill access road., 45.610885 -122.751618
HPSU:V
7436 Sherry V. Spencer s.n. 1992-11-00
U.S.A., California, Humboldt, Arcata; sewage treatment plant.
HPSU:V
6373 Sherry V. Spencer s.n. 1995-08-25
U.S.A., Oregon, Hood River, near hood river
HPSU:V
1521 Pamela J. McMullen s.n. 1973-07-16
U.S.A., Oregon, Multnomah, E. bank of Willamette river; area often submerged, 45.469087 -122.654489
HPSU:V
8263 George Kral 112 1997-08-03
U.S.A., Oregon, Multnomah, Gresham, SE of NE 185th and Marine Drive., 45.556763 -122.469835
HPSU:V
11904 J. Reynolds 33 2000-10-29
U.S.A., California, Alameda, Lake Chabot.
HPSU:V
8499 Angie Kimpo 311 2001-08-01
U.S.A., Oregon, Multnomah, smith lake, 45.614205 -122.737573
HPSU:V
15353 Philip K. Gaddis WN103 2013-07-25
U.S.A., Oregon, Clackamas, Peach Cove, ~4.1 km ssw town of Willamette., 45.303889 -122.667389, 18m
HPSU:V
16780 Ruth Martin Hansen, Louise Godfrey. 2400 1973-09-15
U.S.A., Washington, Skamania, Collected by Louise Godfrey at Skamania Landing, mouth of Duncan Creek on sand bar., 45.606262 -122.072697, 7 - 23m
HPSU:V
17232 Vernon M. Marttala 4753a 1998-08-30
U.S.A., Oregon, Multnomah, Oaks Bottom Wildlife Refuge, Portland., 45.474818 -122.656517
HPSU:V
17233 Vernon M. Marttala 4753 1998-07-01
U.S.A., Oregon, Multnomah, Oaks Bottom Wildlife Refuge, Portland. W/NW of Sellwood Park; grassy meadow on south side of trail on south side of lake; east of railroad tracks. Just SE of junction of trial and the railroad tracks., 45.471367 -122.660889
HPSU:V
17234 Vernon M. Marttala 5131 2000-08-13
U.S.A., Oregon, Multnomah, Oaks Bottom Wildlife Refuge, Portland. South end east side by 'composters.', 45.472276 -122.657386
HPSU:V
17235 Vernon M. Marttala 4852 1998-08-22
U.S.A., Oregon, Multnomah, Oaks Bottom Wildlife Refuge, Portland., 45.473554 -122.658148
HPSU:V
17236 Vernon M. Marttala 4639 1997-09-14
U.S.A., Oregon, Multnomah, Beggars Tick Wildlife Area (BTNA), Portland., 45.479242 -122.550902
HPSU:V
17237 Vernon M. Marttala 4639a 1997-10-05
U.S.A., Oregon, Multnomah, Beggars Tick Wildlife Area (BTNA), Portland., 45.479242 -122.550902
HPSU:V
17847 Ruth Martin Hansen 4682 1977-07-28
U.S.A., Oregon, Multnomah, Rooster Rock State Park, Columbia Gorge., 45.54483 -122.246866, 12m
HPSU:V
18154 Vernon M. Marttala 5437 2003-09-04
U.S.A., Oregon, Columbia, Sauvie Island (N end)., 45.855561 -122.793119
HPSU:V
18972 Jeffrey T. Lesh s.n. 2016-08-06
U.S.A., Oregon, Clackamas, Damascus., 45.399992 -122.502874
HPSU:V
19068 Jeffrey T. Lesh 446 2017-09-26
U.S.A., Oregon, Clackamas, Colton. Highway 211., 45.16706 -122.52556
HPSU:V
19811 Dominic Maze 444 2017-09-29
U.S.A., Oregon, Multnomah, Willamette Park., 45.471176 -122.669573
HPSU:V
20045 John A. Christy, Phil Gaddis, Brian Vaughn 10648 2015-06-24
U.S.A., Oregon, Clackamas, Oregon City, Willamette Falls, Blue Heron Paper Mill site on S bank of Willamette River. Flooded to seasonally wet alcove of Willamette River between old powerhouse, grinders, and clarifier., 45.35329 -122.614973, 7m
HPSU:V
19943 Jeffrey T. Lesh 1149 2019-05-31
U.S.A., Oregon, Josephine, Horseshoe Bend, Rogue River. North side of river., 42.681808 -123.732695
HPSU:V
19987 Jeffrey T. Lesh, Katie Holzer 1196 2019-07-05
U.S.A., Oregon, Multnomah, Gresham, 100 meters West of SE 190th Drive at the end of SW 33rd Street., 45.4734 -122.4684
HPSU:V
20205 Jeffrey T. Lesh 1041 2018-09-04
U.S.A., Oregon, Clackamas, Oregon City. Lower Clackamas River, 400 meters downstream from High Rocks., 45.3778 -122.58726
HPSU:V
20220 Jeffrey T. Lesh, Nina Lesh 1022 2018-07-13
U.S.A., Oregon, Multnomah, Oxbow Park, Sandy River., 45.490953 -122.302443
HPSU:V
20850 John A. Christy 10533 2012-10-02
U.S.A., Oregon, Multnomah, Rooster Rock State Park, Sand Island., 45.553624 -122.19656, 5m
HPSU:V
21197 Angie Kimpo s.n. 2007-00-00
U.S.A., Oregon, Clackamas, Willamette Narrows, 4 mi. S of West Linn, 1.5 mi. S of Willamette Park., 45.314722 -122.6675, 50m
HPSU:V
21189 Dominic Maze, Olivia Duren, Zane maze, Cyrene Maze 1129 2019-08-31
U.S.A., Oregon, Marion, Lower Santiam River. Due south of hamlet of Talbot 1.57 kilometers., 44.746768 -123.094855, 49m
HPSU:V
22256 Dominic Maze 1460 2019-09-12
U.S.A., Oregon, Multnomah, Portland. Oaks Bottom Wildlife Refuge., 45.477311 -122.656243, 9m
HPSU:V
23540 Dominic Maze, Colin MacLaren 1795 2021-08-26
U.S.A., Oregon, Multnomah, Harborton Wetlands. Portland Gas and Electric mitigation site on the the Willamette River northeast of Highway 30 and 2 kilometers northwest of Linnton., 45.616842 -122.801279, 9m
HPSU:V
24139 Richard E. Brainerd 2919 2018-09-09
U.S.A., Oregon, Polk, Luckiamute Landing State Natural Area North Unit; west shore of the Willamette River at river mile 108., 44.747 -123.13977, 50m
HPSU:V
24140 Richard E. Brainerd 2920 2018-09-09
U.S.A., Oregon, Polk, Luckiamute Landing State Natural Area North Unit; west shore of the Willamette River at river mile 108., 44.747 -123.13977, 50m
HPSU:V
24896 George Kral 549 2015-08-02
U.S.A., Oregon, Multnomah, Columbia River bank just east of Chinook Landing., 45.5642 -122.4171, 3m
HPSU:V
24932 George Kral 549 2015-08-02
U.S.A., Oregon, Multnomah, Columbia River bank just east of Chinook Landing., 45.564191 -122.417103, 3m