Ariocarpus retusus subsp. confusus (Halda & Horáček) Lüthy in Kakteen And. Sukk. 50: 278. 1999 Ariocarpus retusus subsp. confusus (Halda & Horáček) Lüthy in Kakteen And. Sukk. 50: 278. 1999is new combination for Ariocarpus confusus Halda & Horáček in Cactaceae etc. 7: 1. 1997Taxon for this nameAriocarpus retusus subsp. confusus (Halda & Horáček) Lüthy