Cirsium hookerianum
PNW
BC
ID
MT
WA
160 specimens from 15 herbaria:
British Columbia (49)
Idaho (9)
Montana (84)
Washington (18)
107 images from 13 herbaria:
BABY (1)
CIC (1)
ID (27)
IDS (2)
LEA (1)
MONT (14)
MONTU (25)
NOCA (2)
OSC (1)
SRP (1)
UBC (5)
WTU (24)
WWB (3)