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Thelocactus macdowellii



A species restricted to a small corner of the Chihuahuan Desert growing at about 1500m above sea level. It would prefer a dry limestone environment and I have it in a moist, acidic medium. Something should be changed.

The Llifle encyclopedia says:

"This species has a very small range in the Chihuahuan Desert on the border of the states of Coahuila and Nuevo León, Mexico (extent of occurrence is less than 100 km²).
It grows at an elevation of about 1500 metres above sea level. Occurring in matorral xerofilo (shrubland) on limestone hills. This plant is quite rare and only known from a from a singlelocation in the wild. Illegal collection may be a problem."



11th October 2018



References:
  • Llifle Encyclopedia online, https://llifle.com/Encyclopedia/CACTI/Family/Cactaceae/14974/Thelocactus_macdowellii , accessed 03.01.2026.