Neomammillaria confusa Britton & Rose, Cactaceae 4: 102, t. 5, f. 2. 1923 Neomammillaria confusa Britton & Rose, Cactaceae 4: 102, t. 5, f. 2. 1923is basionym for Mammillaria pyrrhocephala var. confusa (Britton & Rose) Borg, Cacti, ed. 1: 354. 1937Taxon for this nameNeomammillaria confusa Britton & Rose