⚠ Version 1 of The Plant List has been superseded.
This name record (from Tropicos) is not included in version 1.1 of The Plant List. It is possible the same name is included from a different data source, to check this you can search for Mammillaria hemisphaerica in version 1.1 of The Plant List.
This name is a synonym of Mammillaria heyderi subsp. hemisphaerica .
The record derives from Tropicos which reports it as a synonym (record 5106232
) with original publication details: Boston J. Nat. Hist. 6(2): 198-199 198 1850.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:151086-2
.