Cirsium undulatum
PNW
BC
ID
MT
OR
WA
481 specimens from 26 herbaria:
British Columbia (56)
Idaho (47)
Montana (189)
Oregon (73)
Washington (116)
194 images from 21 herbaria:
BBLM (1)
CIC (2)
EWU (1)
ID (29)
IDS (8)
MONT (61)
MONTU (34)
NOCA (1)
PNNL (5)
PSM (2)
RM (1)
SBLM (2)
SRP (3)
UAAH (1)
UBC (2)
USFS (25)
VALE (1)
WCW (1)
WSTC (3)
WTU (9)
WWB (2)