Neomammillaria petterssonii (Hildm.) Britton & Rose, Cactaceae 4: 94, f. 90. 1923 Neomammillaria petterssonii (Hildm.) Britton & Rose, Cactaceae 4: 94, f. 90. 1923is new combination for Mammillaria petterssonii Hildm. in Deutsche Gärt.-Zeitung 1886: 185. 1886Taxon for this nameNeomammillaria petterssonii (Hildm.) Britton & Rose