| Harvard University Herbaria Barcode(s) | 00017609 |
| Type Status | Syntype, Lectotype |
| Collector | B. F. Bush |
| Collector number | 11 |
| Country | United States of America |
| State | Missouri |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Missouri: Shannon County: Grandin |
| Date Collected | 1905-10-11 |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/a7c576b9-f90e-4536-94ff-a3210ebad7f3 |
| Harvard University Herbaria Barcode | 00017609 |
| Herbarium | A |
| Type Status | Syntype |
| Syntype of | Crataegus villiflora Sargent |
| Verified by | D. E. Boufford |
| Taxon Reference | (for Crataegus villiflora Sargent) Trees & Shrubs [Sargent] 1913. 2: 61. |
| Type Status | Lectotype |
| Lectotype of | Crataegus villiflora Sargent |
| Verified by | J. B. Phipps (UWO) & G. Yatskievych (MO) |
| Date Determined | 2003 |
| Taxon Reference | (for Crataegus villiflora Sargent) Trees & Shrubs [Sargent] 1913. 2: 61. |
| Determination | Crataegus engelmannii Sargent |
| Determined by | J. B. Phipps (UWO) & G. Yatskievych (MO) |
| Date Determined | 2003 |
| Determination Remarks | [current name] |
| Determination | Crataegus engelmannii var. sinistra (Beadle) E. J. Palmer |
| Determined by | Ernest J. Palmer |
| Date Determined | 1947-05-02 |
| Sex | not determined |
| Phenology | Fruit |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
