Thelocactus

Immature plant on hillside outcrop of white novaculite.

plants on an open exposed rockface of gypseous limestone of a foothill on the NW edge of the Sierra Parras, with Jatropha dioica, Agave asperrima, Opuntia rufida, Sericodes greggii, Sengalia crassifolia and other cacti species.

often listed as T. leucanthus rather than T. leucacanthus

plants on an open exposed rockface of gypseous limestone of a foothill on the NW edge of the Sierra Parras, with Jatropha dioica, Agave asperrima, Opuntia rufida, Sericodes greggii, Sengalia crassifolia and other cacti species.

often listed as T. leucanthus rather than T. leucacanthus