Coryphantha aggregata (Engelm.) Britton & Rose, Cactaceae 4: 47. 1923 Coryphantha aggregata (Engelm.) Britton & Rose, Cactaceae 4: 47. 1923is new combination for Mammillaria aggregata Engelm., Emory, Mil. Reconn.: 156. 1848Taxon for this nameCoryphantha aggregata (Engelm.) Britton & Rose