Neomammillaria phaeacantha (Lem.) Britton & Rose, Cactaceae 4: 116–117, f. 122. 1923 Neomammillaria phaeacantha (Lem.) Britton & Rose, Cactaceae 4: 116–117, f. 122. 1923is new combination for Mammillaria phaeacantha Lem., Cact. Gen. Sp. Nov.: 47. 1839Taxon for this nameNeomammillaria phaeacantha (Lem.) Britton & Rose