Populus
angustifolia
PNW
ID
MT
OR
WA
206 specimens from 15 herbaria:
Idaho (104)
Montana (66)
Oregon (33)
Washington (3)
167 images from 12 herbaria:
BLMVL (9)
BOIS (5)
CIC (8)
CRMO (1)
HPSU (2)
ID (44)
IDS (24)
MONT (42)
MONTU (14)
SRP (10)
WCW (2)
WTU (6)