Tanacetum parthenium
PNW
BC
ID
MT
OR
WA
101 specimens from 19 herbaria:
British Columbia (14)
Idaho (13)
Montana (11)
Oregon (31)
Washington (32)
50 images from 14 herbaria:
CIC (3)
CIC-PYNF (1)
EWU (1)
HPSU (1)
ID (8)
IDE (3)
MONT (8)
MONTU (2)
NOCA (2)
OSC (4)
SOC (2)
SRP (3)
WTU (11)
WWB (1)