Cereus horrispinus is a species of cactus in the genus "Cereus". 
Description.
"Cereus horrispinus" is a species of "Cereus" native to Colombia and Venezuela; This plant grows in the seasonally dry tropical areas. It is semi-decumbent cactus can grow up to 5 meters tall with bluish-green stems. These stems grow up to 1 meter tall, and 5cm inches in diameter. The areoles of this species bear grey spines. From the areoles, sweet-scented nocturnal flowers emerge. Its flowers grow up to 17cm, its greenish fruits are spherical to egg-shaped, revealing their edible flesh.