| Classification | Rosaceae: Crataegus |
| Harvard University Herbaria Barcode(s) | 00018394 |
| Type Status | Syntype |
| Collector | J. Dunbar |
| Collector number | 9-04 |
| Country | Canada |
| State | Ontario |
| Geography | North America: North America (CA, US, MX) (Region): Canada: Ontario: London |
| Date Collected | 1905-05-29 |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/9cbe2ddc-9155-486e-9155-a50811472569 |
| Harvard University Herbaria Barcode | 00018394 |
| Herbarium | A |
| Family | Rosaceae |
| Type Status | Syntype |
| Syntype of | Crataegus balkwillii Sargent |
| Verified by | D. E. Boufford |
| Taxon Reference | (for Crataegus balkwillii Sargent) Ontario Nat. Sci. Bull. 1908. 4: 80. |
| Family | Rosaceae |
| Determination | Crataegus aquilonaris Sargent |
| Determined by | J. B. Phipps |
| Determination Remarks | [current name] |
| Sex | not determined |
| Phenology | Flower |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
