Discocactus semicampaniflorus Buining & Brederoo in Cact. Succ. J. (Los Angeles) 47: 122. 1975
Discocactus semicampaniflorus in Cact. Succ. J. (Los Angeles) 47: 122. 1975
is basionym for Discocactus heptacanthus var. semicampaniflorus in Kakteen And. Sukk. 44: 103. 1993