Tephrocactus alexanderi subsp. geometricus (A.Cast.) Guiggi in Cactology 5 (Suppl. III): 2. 2016
Tephrocactus alexanderi subsp. geometricus in Cactology 5 (Suppl. III): 2. 2016
is new combination for Opuntia geometrica in Kakteenkunde 1934: 172. 1934