| Classification | Rosaceae: Crataegus |
| Harvard University Herbaria Barcode(s) | 00017333 |
| Type Status | Lectotype, Syntype |
| Collector | B. F. Bush |
| Collector number | 2 |
| Country | United States of America |
| State | Missouri |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Missouri |
| Locality | Monteer. |
| Date Collected | 1905-05-11 |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/f86d801f-730a-4127-9c30-146e6e09166d |
| Harvard University Herbaria Barcode | 00017333 |
| Herbarium | A |
| Family | Rosaceae |
| Determination | Crataegus crus-galli var. exigua Eggleston |
| Determined by | E. J. Palmer (A) |
| Date Determined | 1947-04-30 |
| Determination Remarks | [is Current name] |
| Family | Rosaceae |
| Determination | Crataegus crus-galli Linnaeus |
| Determined by | J. B. Phipps (UWO) & G. Yatskievych (MO) |
| Date Determined | 2003 |
| Determination Remarks | [is Current name] |
| Family | Rosaceae |
| Type Status | Lectotype |
| Lectotype of | Crataegus rudis Sargent |
| Verified by | J. B. Phipps (UWO) & G. Yatskievych (MO) |
| Date Determined | 2003 |
| Taxon Reference | (for Crataegus rudis Sargent) Rep. (Annual) Missouri Bot. Gard. 1908. 19: 71. |
| Family | Rosaceae |
| Type Status | Syntype |
| Syntype of | Crataegus rudis Sargent |
| Verified by | D. E. Boufford |
| Taxon Reference | (for Crataegus rudis Sargent) Rep. (Annual) Missouri Bot. Gard. 1908. 19: 71. |
| Sex | not determined |
| Phenology | Flower |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
