Echinocactus grusonii, Golden barrel cactus,
Mother-in-law’s cushion, Asiento de suegra
A cactus plant seen in the DESERT ZONE of the Palacio de Cristal de la Arganzuela, Madrid at the end of March 2018
This cactus is mentioned in several issues of THE MEDITERRANEAN GARDEN
I chose AN ADMIRABLE GARDEN IN MALLORCA by Barbara Pohle
THE MEDITERRANEAN GARDEN number 82, October 2015