Potamogeton nodosus
PNW
BC
ID
MT
OR
WA
144 specimens from 20 herbaria:
British Columbia (13)
Idaho (35)
Montana (8)
Oregon (51)
Washington (37)
78 images from 17 herbaria:
BABY (1)
BBLM (2)
BBLM-OWY (1)
BLMVL (2)
CIC (19)
COCC (1)
HPSU (4)
ID (15)
IDE (6)
IDS (6)
MONT (2)
MONTU (3)
OSC (5)
SRP (2)
UBC (1)
WTU (7)
WWB (1)