| Classification | Cactaceae: Mammillaria | 
| Harvard University Herbaria Barcode(s) | 01875434 | 
| Collector | J. S. Beard | 
| Collector number | 390 | 
| Country | Antigua and Barbuda | 
| State | Barbuda | 
| Geography | North America: Caribbean (Region): Antigua and Barbuda: Barbuda | 
| Locality | Castle Hill | 
| Date Collected | 1944-10-18 | 
| Verbatim Elevation | 5 meters | 
| Habitat | windward littoral, on rocks | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/f47535b1-f3e1-462d-b9f3-a449f05ee7b0 | 
| Harvard University Herbaria Barcode | 01875434 | 
| Herbarium | GH | 
| Family | Cactaceae | 
| Determination | Mammillaria nivosa Link ex Pfeiffer | 
| Determination Remarks | [filed under] [current name] | 
| Sex | not determined | 
| Phenology | NotDetermined | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |