| Classification | Rosaceae: Crataegus |
| Harvard University Herbaria Barcode(s) | 00017884 |
| Type Status | Syntype |
| Collector | A. Twining |
| Collector number | 25 |
| Country | United States of America |
| State | Pennsylvania |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Pennsylvania: Lackawanna County: Dunmore |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/f0f0eab5-5542-43e4-977c-61a59bf90ddd |
| Harvard University Herbaria Barcode | 00017884 |
| Herbarium | A |
| Family | Rosaceae |
| Type Status | Syntype |
| Syntype of | Crataegus impervia Sargent |
| Verified by | D. E. Boufford |
| Determination Remarks | [is filed under name] |
| Taxon Reference | (for Crataegus impervia Sargent) Proc. Acad. Nat. Sci. Philadelphia 1910. 62: 197. |
| Sex | not determined |
| Phenology | Fruit |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
