Myriophyllum verticillatum
PNW
AK
BC
ID
MT
OR
WA
211 specimens from 19 herbaria:
Alaska (4)
British Columbia (116)
Idaho (8)
Montana (20)
Oregon (21)
Washington (37)
67 images from 16 herbaria:
BABY (2)
CIC (2)
EWU (1)
HPSU (1)
ID (3)
IDE (4)
IDS (1)
MONT (1)
MONTU (15)
OSC (3)
SOC (2)
SRP (3)
UAAH (4)
UBC (3)
WTU (19)
WWB (3)