Melocactus hookeri Lawr. in Gard. Mag. (London) 17: 319. 1841 Melocactus hookeri Lawr. in Gard. Mag. (London) 17: 319. 1841Taxon for this nameMelocactus hookeri Lawr. in Gard. Mag. (London) 17: 319. 1841