Harrisia 'Jusbertii'

Scientific Name: Harrisia 'Jusbertii' (Rebut ex K.Schum.) Borg
Synonym: Cereus jusbertii, Eriocereus jusbertii, Harrisia bonplandii, Harrisia jusbertii
Family: Cactaceae

Origin: Unknown, maybe Argentina or Paraguay, possibly an intergeneric hybrid between a Harrisia (maybe H. pomanensis) and an Echinopsis eyriesii

Growth Habits: Stems with few branches, mostly erect, up to 2.4 inches in diameter (6 cm), 5 or 6 ribs, 7 very short spines, areoles 0.8 inch (2 cm) apart

Part of stem, picture from K. Schumann "Gesamtbeschreibung der Kakteen"

As 'Harrisia jusbertii', it is a very popular rootstock used in grafting rare cactus species.

Blooming Habits:
Abundant blossom of large nocturnal white flowers, with brownish green outer petals, 7 inches long (18 cm). It might be difficult to obtain seeds, since the species is self-sterile, and most plants are propagated by cuttings and even plants from different source might be coming from the same clone.