| Classification | Rosaceae: Crataegus |
| Harvard University Herbaria Barcode(s) | 00016597 |
| Type Status | Syntype, Lectotype |
| Collector | J. G. Jack bis |
| Collector number | 1 |
| Country | Canada |
| State | Quebec Province |
| Geography | North America: North America (CA, US, MX) (Region): Canada: Quebec Province |
| Locality | Canghuawaga |
| Date Collected | 1901-05-29 |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/0df93909-64c2-446a-b2bb-6dc823e5e732 |
| Harvard University Herbaria Barcode | 00016597 |
| Herbarium | A |
| Family | Rosaceae |
| Type Status | Syntype |
| Syntype of | Crataegus jackii Sargent |
| Verified by | D. E. Boufford |
| Taxon Reference | (for Crataegus jackii Sargent) Rhodora 1903. 5: 162. |
| Family | Rosaceae |
| Type Status | Lectotype |
| Lectotype of | Crataegus jackii Sargent |
| Verified by | J. B. Phipps |
| Taxon Reference | (for Crataegus jackii Sargent) Rhodora 1903. 5: 162. |
| Sex | not determined |
| Phenology | Flower |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
