Mammillaria runyonii (Britton & Rose) Cory in Rhodora 38(455): 407. 1936 Mammillaria runyonii (Britton & Rose) Cory in Rhodora 38(455): 407. 1936is new combination for Coryphantha runyonii Britton & Rose, Cactaceae 4: 26. 1923Taxon for this nameMammillaria runyonii (Britton & Rose) Cory