Thelocactus crassihamatus (F.A.C.Weber) W.T.Marshall in Marshall & Bock, Cactaceae: 169. 1941 Thelocactus crassihamatus (F.A.C.Weber) W.T.Marshall in Marshall & Bock, Cactaceae: 169. 1941is new combination for Echinocactus crassihamatus F.A.C.Weber in Bois, Dict. Hort.: 468. 1896Taxon for this nameThelocactus crassihamatus (F.A.C.Weber) W.T.Marshall