Discocactus pugionacanthus Buining & Brederoo, Discocactus: 61. 1976
Discocactus pugionacanthus, Discocactus: 61. 1976
is basionym for Discocactus placentiformis subsp. pugionacanthus in Kakteen And. Sukk. 46: 64. 1995
is basionym for Discocactus placentiformis var. pugionacanthus in Kakteen And. Sukk. 44: 105. 1993