Ariocarpus bravoanus subsp. hintonii (Stuppy & N.P. Taylor) E.F. Anderson & W.A. Fitz Maur. Ariocarpus bravoanus subsp. hintonii (Stuppy & N.P. Taylor) E.F. Anderson & W.A. Fitz Maur. in Haseltonia 5: 11. 1998 sec. Hunt 2016