Lobivia ritteri Wessner in Beitr. Sukkulentenk. Sukkulentenpflege 1938: 3. 1938
Lobivia ritteri in Beitr. Sukkulentenk. Sukkulentenpflege 1938: 3. 1938
is basionym for Rebutia ritteri in Sukkulentenkunde 7-8: 103. 1963
is basionym for Aylostera ritteri in Pakistan J. Bot. 43: 2783. 2011
is basionym for Digitorebutia brachyantha var. ritteri in Natl. Cact. Succ. J. 12: 11. 1957
is basionym for Lobivia atrovirens var. ritteri, Lobivia 85: 13. 1987 ["1985"]
is basionym for Digitorebutia ritteri in Succulenta (Netherlands) 22: 53. 1940
is basionym for Mediolobivia euanthema var. ritteri in Cactus (Paris) 40: 39. 1954
is basionym for Mediolobivia ritteri in Sukkulentenkunde 1: 19. 1947
Lectotype (designated by Hjertson, M. 2005: 221): [icon] photograph in the protologue in Beitr. Sukkulentenk. Sukkulentenpflege 1938: 4. 1938