Sclerocactus uncinatus subsp. crassihamatus (F.A.C.Weber) N.P.Taylor in Cactaceae Consensus Init. 5: 13. 1998
Sclerocactus uncinatus subsp. crassihamatus in Cactaceae Consensus Init. 5: 13. 1998
is new combination for Echinocactus crassihamatus in Bois, Dict. Hort.: 468. 1896