This name is a synonym of Thelocactus tulensis subsp. buekii (Klein) N.P. Taylor.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50185464) with original publication details: Cactaceae 4: 8, f. 6 1923.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:251017-2.
This name was in version 1 of The Plant List, record tro-50185464, and has not been changed.