| Classification | Rosaceae: Crataegus | 
| Harvard University Herbaria Barcode(s) | 00042961 | 
| Type Status | Isosyntype | 
| Collector | J. Dunbar | 
| Collector number | 7-04 | 
| 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/2f07a00d-6763-409a-999a-c4dd9862fcf6 | 
| Harvard University Herbaria Barcode | 00042961 | 
| Herbarium | A | 
| Family | Rosaceae | 
| Type Status | Isosyntype | 
| Isosyntype of | Crataegus rotundata Sargent | 
| Verified by | P. G. Smith | 
| Taxon Reference | (for  Crataegus rotundata Sargent) Ontario Nat. Sci. Bull. 1908. 4: 61. | 
| Family | Rosaceae | 
| Determination | Crataegus dodgei var. dodgei Ashe | 
| Determined by | P. G. Smith | 
| Determination Remarks | [current name] | 
| Sex | not determined | 
| Phenology | Flower | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |