Berberis vulgaris
PNW
AK
BC
ID
MT
OR
WA
49 specimens from 14 herbaria:
Alaska (1)
British Columbia (14)
Idaho (14)
Montana (4)
Oregon (1)
Washington (15)
30 images from 9 herbaria:
ALA (1)
EWU (3)
ID (8)
IDE (5)
IDS (2)
MONTU (4)
SRP (3)
UBC (3)
WTU (1)