Tanacetum parthenium
PNW
BC
ID
MT
OR
WA
97 specimens from 21 herbaria:
British Columbia (13)
Idaho (13)
Montana (11)
Oregon (28)
Washington (32)
43 images from 14 herbaria:
CIC (3)
CIC-PYNF (1)
EWU (1)
HPSU (1)
ID (7)
IDE (3)
MONT (8)
MONTU (2)
NOCA (2)
PSM (1)
SOC (2)
SRP (1)
WTU (10)
WWB (1)