| Classification | Rosaceae: Crataegus |
| Barcode(s) | 00018066 |
| Type Status | Probable Type, Possible Syntype |
| Collector | G. W. Letterman |
| Country | United States of America |
| State | Missouri |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Missouri: Saint Louis County: Allenton |
| Date Collected | 1881-05-01 |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/f7125a51-c061-474c-b66a-5faa0e3d95f3 |
| Harvard University Herbaria Barcode | 00018066 |
| Herbarium | A |
| Family | Rosaceae |
| Type Status | Probable Type |
| Probable Type of | Crataegus engelmannii Sargent |
| Verified by | D. E. Boufford |
| Date Determined | 1985 |
| Taxon Reference | (for Crataegus engelmannii Sargent) Bot. Gaz. 1901. 31: 2. |
| Family | Rosaceae |
| Type Status | Type |
| Type of | Crataegus engelmannii Sargent |
| Verified by | Emil P. Kruschke |
| Date Determined | 1956-06-05 |
| Determination Remarks | = Crataegus crus-galli var. engelmanni (Sarg.) Kruschke |
| Taxon Reference | (for Crataegus engelmannii Sargent) Bot. Gaz. 1901. 31: 2. |
| Family | Rosaceae |
| Type Status | Possible Syntype |
| Possible Syntype of | Crataegus engelmannii Sargent |
| Verified by | J. B. Phipps (UWO) & G. Yatskievych (MO) |
| Date Determined | 2003 |
| Determination Remarks | Locality discordant |
| Taxon Reference | (for Crataegus engelmannii Sargent) Bot. Gaz. 1901. 31: 2. |
| Family | Rosaceae |
| Determination | Crataegus engelmannii Sargent |
| Determined by | J. B. Phipps (UWO) & G. Yatskievych (MO) |
| Date Determined | 2003 |
| Determination Remarks | [current name] |
| Sex | not determined |
| Phenology | Flower |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
