| crataegus magniflora | | Canada: Ontario, Middlesex Co., London Tp., University of Western Ontario Field Station, hawthorn plantings, row 1, position 43 | | 802085365 |
| crataegus magniflora | | Canada: Ontario, Grey Co., Collingwood Tp., Christie Beach Rd., E side, ca. 1/4 mi back from Georgian Bay | | 802085480 |
| crataegus magniflora | | Canada: Ontario, Essex Co., Gosfield S Tp., 1880 Conc. II, W. Balkwill property, W side of hedge line along driveway to woodlot, 50 m N of the farmhouse | | 802085482 |
| crataegus magniflora | | Canada: Ontario, Middlesex Co., London Tp., University of Western Ontario Field Station, hawthorn plantings, row 1, position 43 | | 802085504 |
| crataegus magniflora | | Canada: Ontario, Middlesex Co., London Tp., University of Western Ontario Field Station, hawthorn plantings, row 1, position 43 | | 802085606 |