The genus Thelocactus 

Thelocactus bicolor
Huizache, San Luis Potosí
Photo: A. Mosco
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Thelocactus bicolor
Vanegas, San Luis Potosí
Photo: E. Nodari
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Thelocactus bicolor
Trinidad, Nuevo León
Photo: A. Mosco
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Thelocactus bicolor
El Chiflon, Coahuila
Photo: J. Jauernig
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Thelocactus bicolor
Photo: J. Jauernig
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Thelocactus bicolor
between Saltillo and Torreón, Coahuila
Photo: A. Mosco
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Thelocactus bicolor
between Saltillo and Torreón, Coahuila
Photo: A. Mosco
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Thelocactus bicolor
Photo: J. Jauernig
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Thelocactus bicolor
Hipolito, Coahuila
Photo: J. Jauernig
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Thelocactus bicolor "commodus"
Montemorelos, Nuevo León
Photo: J. Jauernig
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Thelocactus bicolor "commodus"
Montemorelos, Nuevo León
Photo: J. Jauernig
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Thelocactus bicolor "schottii"
SB 567 Brewster Co., Texas
Photo: A. Mosco
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