Melocactus deinacanthus subsp. longicarpus (Buining & Brederoo) P.J.Braun in Bradleya 6: 94. 1988
Melocactus deinacanthus subsp. longicarpus in Bradleya 6: 94. 1988
is new combination for Melocactus longicarpus in Cact. Succ. J. (Los Angeles) 46: 191. 1974