Weingartia ritteri F.H.Brandt in Kakteen Orch. Rundschau 1978(3): 76. 1978
Weingartia ritteri in Kakteen Orch. Rundschau 1978(3): 76. 1978
is basionym for Sulcorebutia ritteri, Kakteen Südamerika 2: 645. 1980
is basionym for Sulcorebutia verticillacantha var. ritteri in Cact. Succ. J. Gr. Brit. 42: 38. 1980