Mammillaria camptotricha 'Madam Marnier'
Sometimes listed as M. camptotricha var marnierlapostellei or as Mammillaria decipiens ssp. camptotricha 'Madam Marnier'. We've grown this off and on for many years, always under the cultivar name, and so we will leave it at that. A beautiful, easy to grow, Mam.