Notocactus oxycostatus Buining & Brederoo in Krainz, Kakteen: 50-51: CVIc, 106 (fig.). 1972
Notocactus oxycostatus in Krainz, Kakteen: 50-51: CVIc, 106 (fig.). 1972
is basionym for Parodia oxycostata in Cactaceae Consensus Init. 6: 12. 1998
is basionym for Peronocactus oxycostatus in Sukkulenty 2(2): 21. 1999