Observations: —Differs from T. tricolor in Smaller habit Leaves rigid, coriaceous, narrowly triangular, canaliculate, subulate, cinereous lepidote. Scape much shorter and curved Edited from ( 6-62-2014): Cact. Suc. Mex.. .
Edited from ( 6-62-2014): Cact. Suc. Mex.. .