Silybum marianum
PNW
AK
BC
OR
WA
72 specimens from 11 herbaria:
Alaska (1)
British Columbia (7)
Oregon (50)
Washington (14)
28 images from 8 herbaria:
ALA (1)
EWU (3)
HPSU (2)
ID (5)
SOC (2)
SRP (2)
UBC (4)
WTU (9)