]> GH barcode-01678134 Mexico Coahuila "Monte de San Vicente," western base of the Sierra de San Vicente north of the mouth of Cañon Espantosa, about 20 km. E.SE. of Cuatro Cienegas Thelocactus bicolor (Galeotti ex Pfeiffer) Britton & Rose (Galeotti ex Pfeiffer) Britton & Rose 2019-03-13 13:19:15 A. H. Schroeder