Myriophyllum aquaticum
PNW
BC
ID
OR
WA
127 specimens from 16 herbaria:
British Columbia (15)
Idaho (10)
Oregon (65)
Washington (37)
57 images from 10 herbaria:
CIC (3)
HPSU (17)
ID (5)
IDE (4)
IDS (1)
PLU (1)
SRP (2)
UBC (2)
WTU (20)
WWB (2)