| Classification | Cactaceae: Mammillaria |
| Harvard University Herbaria Barcode(s) | 01875376 |
| Collector | S. D. McKelvey |
| Collector number | 1107 |
| Country | United States of America |
| State | Arizona |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Arizona |
| Locality | Apache Trail, on road to Horse Mesa Dam |
| Date Collected | 1929-05-21 |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/264bfa46-3a62-416e-9a3f-e2ee874d2760 |
| Harvard University Herbaria Barcode | 01875376 |
| Herbarium | GH |
| Family | Cactaceae |
| Determination | Mammillaria microcarpa Engelmann |
| Determination Remarks | [is filed under name] [is Current name] |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
