Warnstorfia fluitans
PNW
AK
BC
ID
MT
OR
WA
YK
274 specimens from 10 herbaria:
Alaska (125)
British Columbia (51)
Idaho (5)
Montana (14)
Oregon (20)
Washington (48)
Yukon Territory (11)
46 images from 2 herbaria:
ALA (42)
SRP (4)