This name is a synonym of Turbinicarpus schmiedickeanus subsp. andersonii Mosco.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50335616) with original publication details: 1996.
This name was in version 1 of The Plant List, record tro-50335616, and has not been changed.