Populus tremuloides
PNW
AK
BC
ID
MT
OR
WA
875 specimens from 40 herbaria:
Alaska (24)
British Columbia (73)
Idaho (292)
Montana (94)
Oregon (157)
Washington (230)
470 images from 35 herbaria:
BABY (2)
BBLM (3)
BBLM-OWY (2)
BLMVL (2)
BOIS (1)
CIC (10)
CIC-PYNF (1)
COCC (5)
CRMO (6)
EWU (10)
HJAEF (1)
HPSU (4)
ID (98)
IDS (53)
IFBLM (1)
LEA (2)
MONT (45)
MONTU (36)
NOCA (3)
OSC (3)
PLU (7)
PSM (7)
REED (3)
SAJH (1)
SEF (2)
SOC (15)
SRP (64)
TFBLM (1)
UAAH (12)
UBC (15)
UWB (1)
WCW (6)
WS (6)
WTU (35)
WWB (7)