Neomammillaria subpolyedra (Salm-Dyck) Britton & Rose [ Mammillaria subpolyedra Salm-Dyck]
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Neomammillaria subpolyedra (Salm-Dyck) Britton & Rose [ Mammillaria subpolyedra Salm-Dyck] [Cactaceae]
C.F. Förster, T. Rümpler, Handb. Cacteenk., ed. 2, vol. 1 : p. 357, t. 37 (1886)