Myriophyllum aquaticum
PNW
BC
ID
OR
WA
136 specimens from 13 herbaria:
British Columbia (18)
Idaho (11)
Oregon (70)
Washington (37)
70 images from 11 herbaria:
CIC (3)
HPSU (21)
ID (5)
IDE (4)
IDS (1)
OSC (6)
PLU (1)
SRP (3)
UBC (2)
WTU (22)
WWB (2)