Scanned from a 6 x 6 slide from the year 1967
An endemic cactus it is also the most common cactus in the Galápagos islands. It grows like a shrub, except on islands where herbivores are a threat then the trunks can grow to 5 ft tall. The Prickly Pear Cactus is the staple of the Land Iguanas & Tortoises' diet. Their flat jointed stems covered with small stiff hairs and spines identify the cacti.