L. koehresii is taxonomically contentious; recognized by Continental European systematists but not yet accepted as a valid species by Anglo-American cactus taxonomists.
L. koehresii is taxonomically contentious; recognized by Continental European systematists but not yet accepted as a valid species by Anglo-American cactus taxonomists. [Terry 2008 CSJ 80 part 1 (Lophophora taxonomy)]
The taxon koehresii (described by Riha) is treated by POWO as a synonym of Lophophora diffusa; associated names include Lophophora diffusa var. koehresii Riha, Lophophora koehresii (Riha) Bohata, Mysak & Snicer, and Lophophora williamsii var. koehresii (Riha) Grym. [https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:143598-2]
Native range
The town of Tula, Tamaulipas holds the northernmost known population of L. koehresii. [Terry, M. Stalking the wild Lophophora, Part 2: Zacatecas, San Luis Potosi, Nuevo Leon, and Tamaulipas. Cactus and Succulent Journal, Vol. 80, No. 5, September-October 2008.]
