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