uruguayanus:[3] Cereus hildmannianus is a species of cactus from southern South America.

[1] Cereus hildmannianus has a tree-like growth habit with a distinct trunk after which it branches freely up to 10 m (33 ft) high.

The white flowers are very large, up to 25–30 cm (10–12 in) long, and are followed by fruits which are red when ripe.

[4] Cereus hildmannianus is thought to be widespread in Brazil,[5] Mato Grosso do Sul, Paraguay, Uruguay, Bolivia and Argentina.

Plants named as Cereus uruguayensis by Roberto Kiesling in 1982 were reduced to C. hildmannianus subsp.

uruguayensis by Nigel P. Taylor in 1998,[1] thereby creating the autonym C. hildmannianus subsp.