Harrisia bonplandii

Harrisia bonplandii is a species of cactus. The cactus plants in the Gran Chaco (Paraguay, Argentina, Bolivia) are generally called tuna and this specific variety reina de la noche (queen of the night). Fruits and roots are edible and well known to the native nations of the Gran Chaco. Names of this cactus in the different languages of the native Nations are: Ayoreo Nation: daturirai / datura; Enxet Nation: laapang; Nivaclé Nation: sôtôyuc. In Argentina it is also known as pasacana/ulua. The plant remains often unnoticed in the forest, but can not be overseen when it blossoms only in the night and where its Spanish name originates. In English, it's also called the giant red dragon apple cactus or strangler prickly apple. The name bonplandii honors the French scientist Aimé Bonpland....read more on Wikipedia.