Populus trichocarpa
PNW
AK
BC
ID
MT
OR
WA
YK
1004 specimens from 38 herbaria:
Alaska (60)
British Columbia (45)
Idaho (264)
Montana (161)
Oregon (219)
Washington (254)
Yukon Territory (1)
527 images from 33 herbaria:
ALA (40)
BABY (1)
BBLM (2)
BLMVL (16)
BOIS (5)
CIC (43)
CIC-PYNF (1)
CRMO (5)
EWU (8)
HJAEF (1)
HPSU (12)
ID (118)
IDS (22)
LEA (2)
LINF (1)
MONT (14)
MONTU (69)
NOCA (2)
PLU (13)
PNNL (3)
PSM (4)
REED (2)
SBLM (1)
SOC (10)
SRP (58)
UAAH (4)
UBC (10)
USFS (18)
UWB (4)
WCW (13)
WSTC (1)
WTU (13)
WWB (11)