Common Name: Sun Cactus, Santa Marta, Pitaya de Cerro
Family: Cactaceae Juss.
Country of Origin: Central Mexico
Habitat: epiphytic or lithophytic cactus
Description: Occasionally epiphytic, much branched, erect at first, stems reddish at first and then dark red, 3 to 5 sharp wavy ribs, 0.4 inch high; areoles 1.2 in. apart (3 cm), with whitish felt; 5 to 8 spines at first, 0.4 to 0.6 in. long (1-1.5 cm), yellowish.
Syn. Heliocereus speciosus
Culture: Warm temps (60F min), light shade, regular moisture