It’s a cactacea made up of bright green stems with a diameter of a few centimeters and several meters long, with not very prominent but perfectly symmetrical ribs and sparse, microscopic thorns. S. hamatus tends, with growth, to crawl on the ground and root rapidly or, in the presence of a physical support, to climb, bending and twisting (hence the name of the species, which in ancient Latin means “hooked”). The real strong point of this cactus are its flowers, among the largest of the whole genus: they open in the middle of the night and even reach 30 cm, emanating sweet scents with their soft white petals, surrounded by many others more open and thin, arranged as a sort of corolla around the central part, for a show that will certainly not go unnoticed!