⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-2651116, with some changes.
This name is a synonym of Ariocarpus retusus subsp. trigonus .
The record derives from WCSP (in review) which reports it as a synonym with original publication details: Bot. Jahrb. Syst. 24: 550 1898.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:19068-2
.