Carduus pycnocephalus
PNW
ID
OR
WA
56 specimens from 8 herbaria:
Idaho (13)
Oregon (42)
Washington (1)
31 images from 8 herbaria:
CIC (1)
HPSU (3)
ID (1)
IDE (12)
OSC (5)
SRP (3)
WS (1)
WTU (5)