Opuntia riojana Hosseus ex Backeb. & F.M.Knuth, Kaktus-ABC: 113, 429. 1936 ["1935"]
Opuntia riojana, Kaktus-ABC: 113, 429. 1936 ["1935"]
is basionym for Tephrocactus riojanus, Kaktus-ABC: 113. 1936 ["1935"]
Opuntia riojana, Kaktus-ABC: 113, 429. 1936 ["1935"]
Taxon for this name