Tephrocactus alexanderi subvar. macranthus (Speg.) Backeb., Cactaceae 1: 293. 1958 Tephrocactus alexanderi subvar. macranthus (Speg.) Backeb., Cactaceae 1: 293. 1958is new combination for Opuntia bruchii f. macracantha Speg. in Revista Argent. Bot. 1: 202. 1926Taxon for this nameTephrocactus alexanderi subvar. macranthus (Speg.) Backeb.