Crataegus macracantha var. occidentalis
PNW
BC
ID
MT
OR
WA
56 specimens from 11 herbaria:
British Columbia (3)
Idaho (27)
Montana (10)
Oregon (5)
Washington (11)
31 images from 7 herbaria:
CIC (1)
ID (23)
IDS (1)
MONT (3)
MONTU (1)
UBC (1)
WTU (1)