Berberis thunbergii
PNW
BC
ID
MT
OR
WA
29 specimens from 9 herbaria:
British Columbia (12)
Idaho (9)
Montana (1)
Oregon (2)
Washington (5)
13 images from 6 herbaria:
BOIS (1)
CIC (3)
ID (3)
MONTU (1)
SRP (4)
UBC (1)