Gymnocalycium mihanovichii var. stenogonum P 242 December 16, 2013 by cactophyle 0 Gymnocalycium mihanovichii v. stenogonum P 242 Argentina: Chaco Austral, Formosa, 150m Gymnocalycium mihanovichii v. stenogonum P 242 из коллекции Олега Балановского (Днепр, Украина). – Plants from the collection of Oleg Balanovsky, Dnipro, Ukraine. Source of seeds: Mesa Garden.