Thelocactus buekii
Thelocactus buekii, Cactaceae 4: 8. 1923 sec. Hunt 20161
- =Thelocactus matudae in Cact. Suc. Mex. 23(3): 51. 1978 syn. sec. Hunt 20162
- ≡Thelocactus tulensis subsp. matudae in Bradleya 5: 66. 1987 syn. sec. ???
- ≡Thelocactus tulensis var. matudae in Bradleya 5: 66. 1987 syn. sec. ???
- ≡Thelocactus nidulans subsp. matudae in Cactaceae Consensus Init. 5: 14. 1998 syn. sec. ???
- ≡Thelocactus buekii subsp. matudae in Bradleya 18: 62. 2000 syn. sec. ???