This member of the Cactaceae family was described by Martin Cárdenas in 1950. It is found in the heights of Bolivia, in a well drained soil with some water and some sun. The caudex can grow to ten centimetres in diameter, the stems to three meters in height. It can be reproduced by seeds from the pink flowers or with fresh cuttings. The genus n amed after the French astronomist Nicolas Claude Fabri de Peiresc. The species name after Belisario Diaz Romero,1870–1940, a Bolivian naturalist. A caudex by Moises Mendoza, Powo.science.kew.org.
