| ambrosia trifida | | Canada: Ontario, rare Charitable Research Reserve, Blair Flats | | 929982159 |
| ambrosia trifida | | Canada: Ontario, rare Charitable Research Reserve, Blair Flats | | 930159752 |
| ambrosia trifida | | Canada: Leamington, Ontario | | 1159608033 |
| ambrosia trifida | | Canada: Ontario, Essex, Essex, 4895 8th Concession | | 1316021118 |
| ambrosia trifida | | Canada: Ontario, Niagara County, Thorold Township, Short Hills Provincial Park, #6 trail | | 1316023368 |
| ambrosia trifida | | Canada: Ontario, Chatham-Kent County, Ridgetown, Ridgetown College Campus, Compost area near old railway bed | | 1316025110 |
| ambrosia trifida | | canada: ontario, niagara county, thorold township, short hills provincial park, #6 trail | | 1328822272 |
| ambrosia trifida | | canada: ontario, essex, essex, 4895 8th concession | | 1331393261 |
| ambrosia trifida | | canada: leamington, ontario | | 1844494658 |