Tephrocactus pentlandii var. rossiana Heinrich & Backeb. in Cactus (Paris) 38: 250. 1953
Tephrocactus pentlandii var. rossiana in Cactus (Paris) 38: 250. 1953
is new combination for Tephrocactus pentlandii var. rossianus in Cactus (Paris) 38: 250. 1953
is orthographic variant for Tephrocactus pentlandii var. rossianus