| Classification | Rosaceae: Crataegus |
| Harvard University Herbaria Barcode(s) | 00000671 |
| Type Status | Syntype, Isolectotype |
| Collector | J. H. Kellogg |
| Country | United States of America |
| State | Missouri |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Missouri: Saint Louis County: Barretts |
| Date Collected | 1907-05-13 |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/ba2adf6c-6bd8-4ff2-be5b-3f8a3e59ea8a |
| Harvard University Herbaria Barcode | 00000671 |
| Herbarium | A |
| Family | Rosaceae |
| Type Status | Syntype |
| Syntype of | Crataegus barrettiana Sargent |
| Verified by | D. E. Boufford |
| Date Determined | 1984 |
| Taxon Reference | (for Crataegus barrettiana Sargent) Rep. (Annual) Missouri Bot. Gard. 1908. 19: 50. |
| Family | Rosaceae |
| Type Status | Isolectotype |
| Isolectotype of | Crataegus barrettiana Sargent |
| Taxon Reference | (for Crataegus barrettiana Sargent) Rep. (Annual) Missouri Bot. Gard. 1908. 19: 50. |
| Family | Rosaceae |
| Determination | Crataegus crus-galli Linnaeus |
| Determined by | J. B. Phipps (UWO) & G. Yatskievych (MO) |
| Date Determined | 2003 |
| Determination Remarks | [current name] |
| Family | Rosaceae |
| Determination | Crataegus crus-galli var. barrettiana (Sargent) E. J. Palmer |
| Determined by | Ernest J. Palmer |
| Date Determined | 1947-04-30 |
| Sex | not determined |
| Phenology | Flower |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
