Populus
balsamifera
PNW
AK
BC
ID
MT
OR
141 specimens from 14 herbaria:
Alaska (38)
British Columbia (12)
Idaho (35)
Montana (46)
Oregon (3)
85 images from 10 herbaria:
BABY (6)
CIC (1)
ID (7)
IDS (6)
MONT (43)
SRP (8)
UAAH (9)
UBC (2)
WCW (2)
WTU (1)