Trifolium arvense
PNW
BC
ID
MT
OR
WA
210 specimens from 21 herbaria:
British Columbia (18)
Idaho (47)
Montana (7)
Oregon (72)
Washington (66)
99 images from 17 herbaria:
BOIS (1)
CIC (2)
EWU (1)
HPSU (10)
ID (15)
IDE (15)
IDS (2)
MONT (4)
MONTU (3)
NOCA (6)
PLU (8)
PSM (3)
SOC (3)
SRP (7)
UBC (3)
WCW (4)
WTU (12)