Neomammillaria collina (J.A.Purpus) Britton & Rose, Cactaceae 4: 111. 1923 Neomammillaria collina (J.A.Purpus) Britton & Rose, Cactaceae 4: 111. 1923is new combination for Mammillaria collina J.A.Purpus in Monatsschr. Kakteenk. 22: 162. 1912Taxon for this nameNeomammillaria collina (J.A.Purpus) Britton & Rose