Toumeya papyracantha (Engelm.) Britton & Rose, Cactaceae 3: 91. 1922 Toumeya papyracantha (Engelm.) Britton & Rose, Cactaceae 3: 91. 1922is new combination for Mammillaria papyracantha Engelm. in Mem. Amer. Acad. Arts, n.s. 4(1): 49. 1849Taxon for this nameToumeya papyracantha (Engelm.) Britton & Rose