Opuntia pseudo-udonis (Rauh & Backeb.) G.D.Rowley in Natl. Cact. Succ. J. 13(1): 5. 1958
Opuntia pseudo-udonis in Natl. Cact. Succ. J. 13(1): 5. 1958
is new combination for Tephrocactus pseudo-udonis in Sitzungsber. Heidelberger Akad. Wiss., Math.-Naturwiss. Kl.: 208. 1958