Lophophora williamsii var. jourdaniana
Originally proposed to be a separate species by V. Habermann, Lophophora jourdaniana Haberm. Kaktusy (Brno) 11(1): 3 (1975), this is now generally considered a horticultural cultivar of Lophophora williamsii (Lem. ex Salm-Dyck) J.M.Coult.
Read more about these plants in the Sacred Cacti blog written by Keeper Trout.
