Tephrocactus alexanderi (Britton & Rose) Backeb. in Cactus (Paris) 38: 250. 1953
Tephrocactus alexanderi in Cactus (Paris) 38: 250. 1953
is new combination for Opuntia alexanderi, Cactaceae 4: 256. 1923
Tephrocactus alexanderi in Cactus (Paris) 38: 250. 1953