Populus balsamifera
PNW
AK
BC
ID
MT
OR
YK
410 specimens from 18 herbaria:
Alaska (209)
British Columbia (12)
Idaho (38)
Montana (99)
Oregon (3)
Yukon Territory (49)
286 images from 13 herbaria:
ALA (175)
BABY (6)
CIC (1)
ID (7)
IDS (6)
MONT (45)
RM (4)
SRP (8)
UAAH (8)
UBC (18)
USFS (5)
WCW (2)
WTU (1)