Phellosperma tetrancistra (Engelm.) Britton & Rose, Cactaceae 4: 60. 1923
Phellosperma tetrancistra, Cactaceae 4: 60. 1923
is new combination for Mammillaria tetrancistra in Amer. J. Sci. Arts, ser. 2, 14(42): 337–338. 1852
Phellosperma tetrancistra, Cactaceae 4: 60. 1923
Taxon for this name