green, margins undulate and horny. Flowers 25–30 cm long, white with green outer tepals and bracts. Fruit red with white pulp. | El Salvador, Guatemala, Honduras and Mexico | | |- | Selenicereus vagans(K.Brandegee) Britton & Rose |Flower 15 cm long, receptacle spiny, hairless. |Mexico. | | |- | Selenicereus validusS.Arias & U.Guzmán |Huge nocturnal flowers with bright red fruits. | Mexico (Michoacán). | | |} Species formerly recognized include:Selenicereus boeckmannii – synonym of Selenicereus pteranthusSelenicereus brevispinus – synonym of Selenicereus pteranthusSelenicereus chontalensis – synonym of Deamia chontalensisSelenicereus coniflorus – synonym of Selenicereus grandiflorusSelenicereus hallensis – synonym of Selenicereus grandiflorusSelenicereus urbanianus – synonym of Selenicereus grandiflorusSelenicereus rubineus – synonym of Selenicereus inermisSelenicereus wercklei – synonym of Selenicereus inermisSelenicereus wittii – synonym of Strophocactus wittiiUses The fruits of a number of species of Selenicereus (particularly those formerly placed in Hylocereus) are eaten. Selenicereus undatus and Selenicereus triangularis are widely cultivated in the Americas, Europe and Asia for their fruits, known as pitayas or pitahayas in Spanish, and as dragon fruits in Asia. The fruit of Selenicereus setaceus'' is eaten in South America. References External links Cacti of North America Cacti of South America Flora of the Caribbean Flora of Central America Night-blooming plants