Potamogeton amplifolius
Largeleaf Pondweed
Photo: (c) hollyyoung, some rights reserved (CC BY-NC), uploaded by hollyyoung (iNaturalist)
2
Bishop specimens
0
Type specimens
1952
First collected
1963
Last collected
2026
Last seen alive
Where Bishop collected it
1 mapped specimens. Localities of endangered species are shown approximately.
Two centuries of collecting
The oldest Bishop specimen was collected in 1952 by Seymour, F.C. (Lincoln Co. - Bradley - Tomahawk River). The Museum last collected it in 1963; iNaturalist observers have seen it in the wild as recently as October 20, 2026.
Alive today
994 research-grade iNaturalist sightings in the wild since 2000. Most recent first.
2026-10-20
Florence Dr, McMillan, MI, US
(c) John Cook, some rights reserved (CC BY-NC)
2026-10-13
New London County, US-CT, US
(c) Tom Groves, some rights reserved (CC BY-NC)
2026-10-11
Vadnais Heights, MN 55110, USA
(c) gannet, some rights reserved (CC BY-NC)
2026-10-09
Trail 3, Morrisville, NY, US
(c) giannab, some rights reserved (CC BY-NC)
2026-10-09
Trail 3, Morrisville, NY, US
(c) skylarhenebery, some rights reserved (CC BY-NC)
2026-09-30
Lake, Minnesota, United States
(c) Tanner Barnharst, some rights reserved (CC BY)
2026-09-30
Lake, Minnesota, United States
(c) Tanner Barnharst, some rights reserved (CC BY)
2026-09-29
W Shore Dr, Crosslake, MN, US
(c) Baylee Bessingpas, some rights reserved (CC BY-NC)