Potamogeton obtusifolius
PNW
AK
BC
MT
WA
76 specimens from 10 herbaria:
Alaska (18)
British Columbia (26)
Montana (16)
Washington (16)
26 images from 5 herbaria:
ALA (6)
ID (1)
MONTU (13)
UAAH (3)
WTU (3)