Cirsium undulatum
PNW
BC
ID
MT
OR
WA
425 specimens from 24 herbaria:
British Columbia (59)
Idaho (49)
Montana (116)
Oregon (80)
Washington (121)
181 images from 22 herbaria:
BBLM (1)
CIC (2)
COCC (3)
EWU (1)
HPSU (1)
ID (29)
IDS (8)
IFBLM (1)
MONT (61)
MONTU (36)
NOCA (1)
OSC (2)
PSM (1)
SBLM (2)
SRP (4)
UAAH (1)
UBC (2)
VALE (1)
WCW (1)
WS (4)
WTU (17)
WWB (2)