Heliocereus

 

The genus Heliocereus has 4 species from Mexico, Guatemala, El Salvador, Honduras, and Nicaragua. This species has been used abundantly in hybridation, and many orchid cactus have it in their ancestry. The name Heliocereus comes from the greek for 'sun', associated to the genus name 'cereus'. It relates to the fact that its flowers open in the sun. Recently the genus Heliocereus has been merged into the the genus Disocactus

Heliocereus are epiphytic or saxicolous (living in cliffs or rocky ledges). Their stems are flat to 3-4-angled, often spiny or hairy. The flowers are funnel-shaped, with a spiny or hairy tube. The petals are red, orange or purplish, one variety has white flowers.

Species and varieties
Heliocereus amecamensis synonym of Disocactus speciosus (Santa Marta, Pitaya de Cerro)
Heliocereus aurantiacus synonym of Disocactus aurantiacus
Heliocereus cinnabarinus synonym of Disocactus cinnabarinus
Heliocereus coccineus synonym of Selenicereus setaceus
Heliocereus elegantissimus synonym of Disocactus schrankii
Heliocereus luzmariae synonym of Disocactus schrankii
Heliocereus schrankii synonym of Disocactus schrankii
Heliocereus schrankii var. elegantissimus synonym of Disocactus schrankii
Heliocereus serratus synonym of Disocactus speciosus (Santa Marta, Pitaya de Cerro)
Heliocereus speciosissimus synonym of Disocactus speciosus (Santa Marta, Pitaya de Cerro)
Heliocereus speciosus synonym of Disocactus speciosus (Santa Marta, Pitaya de Cerro)
Heliocereus speciosus var. amecamensis synonym of Disocactus speciosus (Santa Marta, Pitaya de Cerro)
Heliocereus speciosus var. serratus synonym of Disocactus speciosus (Santa Marta, Pitaya de Cerro)
Heliocereus speciosus var. superbus synonym of Disocactus speciosus (Santa Marta, Pitaya de Cerro)
Heliocereus superbus synonym of Disocactus speciosus (Santa Marta, Pitaya de Cerro)

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