Ancistrocactus uncinatus var. wrightii (Engelm.) L.D.Benson in Britton & Rose, Cactaceae 4 4: 4. 1923
Ancistrocactus uncinatus var. wrightii in Britton & Rose, Cactaceae 4 4: 4. 1923
is new combination for Echinocactus uncinatus var. wrightii in Proc. Amer. Acad. Arts 3: 272. 1856