Callitriche heterophylla
PNW
AK
BC
ID
MT
OR
WA
YK
388 specimens from 27 herbaria:
Alaska (28)
British Columbia (175)
Idaho (23)
Montana (19)
Oregon (69)
Washington (71)
Yukon Territory (3)
135 images from 20 herbaria:
ALA (24)
BABY (1)
BBLM (1)
CIC (2)
HJAEFB (1)
HPSU (5)
ID (7)
IDE (1)
IDS (3)
MONT (3)
MONTU (7)
NOCA (8)
PLU (1)
REED (1)
SOC (1)
SRP (9)
UBC (11)
WCW (2)
WTU (39)
WWB (8)