Origin and Habitat:Â Argentina and Bolivia, 2000+m above sea level.
Habitat:Â It grows on step slopes in association with shrub species and is often the dominant plant at the margins of the Argentine Puna.Â
Flowers:Â Borne on the sides of the stems, rose-white, 10â€“14 cm long; Tube covered with long blackish hairs.
Blooming period:Â Spring to summer, flowers open in the evening and last from 18 to 40 hours.
Fruit:Â Dark green, densely covered with hairs, up to 5 cm long, edible.