Echinomastus uncinatus var. wrightii (Engelm.) F.M.Knuth, Kaktus-ABC: 358. 1936 ["1935"]
Echinomastus uncinatus var. wrightii, Kaktus-ABC: 358. 1936 ["1935"]
is new combination for Echinocactus uncinatus var. wrightii in Proc. Amer. Acad. Arts 3: 272. 1856