Tephrocactus subsphaericus Backeb., Kaktus-ABC: 410. 1936 ["1935"]
Tephrocactus subsphaericus, Kaktus-ABC: 410. 1936 ["1935"]
is basionym for Opuntia alexanderi var. subsphaerica in Natl. Cact. Succ. J. 13: 5. 1958
is basionym for Tephrocactus alexanderi var. subsphaericus in Cactus (Paris) 38: 250. 1953