| Classification | Cactaceae: Mammillaria |
| Harvard University Herbaria Barcode(s) | 01875392 |
| Collector | R. A. Bye Jr. |
| Collector number | 7073 |
| Country | Mexico |
| State | Chihuahua |
| Geography | North America: North America (CA, US, MX) (Region): Mexico: Chihuahua |
| Locality | Mnpo. de Batopilas. east of bridge over Arroyo Samachique (or Arroyo Guimivo), on north side of Rio Batopilas, between Batopilas and La Bufa |
| Date Collected | 1975-10-11 |
| Verbatim Elevation | ca. 2500 ft. |
| Habitat | on steep rock wall and cliff with Bursera, Ipomoea aborescens and various legume shrubs growing in small clumps in crevices |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/10fa69b8-d61e-41a5-8e6c-5345b34275c4 |
| Harvard University Herbaria Barcode | 01875392 |
| Herbarium | ECON |
| Family | Cactaceae |
| Determination | Mammillaria grahamii Engelmann |
| Determination Remarks | [is filed under name] [is Current name] |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
