Potamogeton illinoensis
PNW
BC
ID
MT
OR
WA
165 specimens from 20 herbaria:
British Columbia (50)
Idaho (10)
Montana (28)
Oregon (38)
Washington (39)
56 images from 13 herbaria:
BABY (1)
BBLM-OWY (2)
BLMVL (2)
CIC (12)
EWU (2)
ID (2)
MONT (3)
MONTU (20)
NOCA (2)
PSM (2)
SRP (1)
WCW (2)
WTU (5)