| Classification | Rosaceae: Crataegus | 
| Harvard University Herbaria Barcode(s) | 00016838 | 
| Type Status | Syntype | 
| Collector | J. Dunbar | 
| Collector number | 11 | 
| Country | Canada | 
| State | Ontario | 
| Geography | North America: North America (CA, US, MX) (Region): Canada: Ontario: Regional Municipality of Niagara: Niagara Falls: Chippawa | 
| Date Collected | 1906-05-29 | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/d8c47321-ef16-423f-b5e6-ab36d1657fd2 | 
| Harvard University Herbaria Barcode | 00016838 | 
| Herbarium | A | 
| Family | Rosaceae | 
| Type Status | Syntype | 
| Syntype of | Crataegus longipedunculata Sargent | 
| Verified by | D. E. Boufford | 
| Determination Remarks | [filed under] | 
| Taxon Reference | (for  Crataegus longipedunculata Sargent) Ontario Nat. Sci. Bull. 1908. 4: 26. | 
| Sex | not determined | 
| Phenology | Flower | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |