| Classification | Cactaceae: Neomammillaria | 
| Classification 1 | Cactaceae: Mammillaria | 
| Harvard University Herbaria Barcode(s) | 00032225 | 
| Type Status | Isotype | 
| Collector | Edw. Palmer | 
| Collector number | 89 | 
| Country | Mexico | 
| State | Durango | 
| Geography | North America: North America (CA, US, MX) (Region): Mexico: Durango | 
| Locality | Santiago Papasquiaro | 
| Date Collected | 1896-08-** | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/0ce84256-52ed-4c26-91ec-028b573f5333 | 
| Harvard University Herbaria Barcode | 00032225 | 
| Herbarium | GH | 
| Family | Cactaceae | 
| Type Status | Isotype | 
| Isotype of | Neomammillaria longiflora Britton & Rose | 
| Taxon Reference | (for  Neomammillaria longiflora Britton & Rose) Cactaceae (Britton & Rose) 1923. 4: 163. | 
| Family | Cactaceae | 
| Determination | Mammillaria longiflora (Britton & Rose) A. Berger | 
| Determined by | H. Hernandez | 
| Determination Remarks | [current name] | 
| Sex | not determined | 
| Phenology | Flower | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |