Tephrocactus geometricus (A.Cast.) Backeb., Kaktus-ABC: 111. 1936 ["1935"]
Tephrocactus geometricus, Kaktus-ABC: 111. 1936 ["1935"]
is new combination for Opuntia geometrica in Kakteenkunde 1934: 172. 1934
Tephrocactus geometricus, Kaktus-ABC: 111. 1936 ["1935"]