| crataegus phaenopyrum | | Canada: Ontario, Middlesex Co., N of London on Wonderland Rd., at Conc. IX, 1, 3 km N of Sarnia Rd., The Environmental Sciences Western Field Station, at SW corner of hawthorn thicket | | 802085528 |
| crataegus phaenopyrum | | Canada: Ontario, Middlesex Co., City of London, University of Western Ontario, W of Social Sciences Building by walkway alongside Western Rd. | | 802085432 |
| crataegus phaenopyrum | | Canada: Ontario, Middlesex Co., On University of Western Ontario campus, behind Social Science parking lot beside Western Rd. | | 802085474 |
| crataegus phaenopyrum | | Canada: Ontario, Middlesex Co., N of London on Wonderland Rd., at Conc. IX, 1, 3 km N of Sarnia Rd., The Environmental Sciences Western Field Station, at SW corner of hawthorn thicket | | 802085382 |