Thelocactus flavus Mosco & Zanov. in Cactus & Co. 2: 20. 1999
Thelocactus flavus in Cactus & Co. 2: 20. 1999
is basionym for Thelocactus conothelos subsp. flavus in Bradleya 18: 63. 2000
Holotype: Mexico, San Luis PotosÃ, Huizache, cult. Nov. 1998, Kuenzler 362 (HG-PAD)