| Classification | Cactaceae: Mammillaria |
| Harvard University Herbaria Barcode(s) | 01875396 |
| Collector | R. A. Bye Jr. |
| Collector number | 3327 |
| Country | Mexico |
| State | Chihuahua |
| Geography | North America: North America (CA, US, MX) (Region): Mexico: Chihuahua |
| Locality | Mnpo. de Batopilas. Barranca de Batopilas, east of junction of Arroyo Samachique (huimivo) with Rio Batopilas |
| Date Collected | 1973-02-23 |
| Verbatim Elevation | ca. 2550 ft. |
| Habitat | on rock slope with south exposure surrounded by legume trees, Ipomoea, Erythrina etc. |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/7fd96ead-e470-4e8f-8102-9e17ccb46183 |
| Harvard University Herbaria Barcode | 01875396 |
| Herbarium | ECON |
| Family | Cactaceae |
| Determination | Mammillaria heyderi var. hemisphaerica Engelmann |
| Determination Remarks | [is filed under name] [is Current name] |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
