Selenicereus monacanthus (Red Dragon Fruit)

Native from Nicaragua through northern South America to Peru, Selenicereus monacanthus is a climbing cactus grown commercially for red dragon fruit. Its large flowers open at night and have pale inner segments with reddish outer margins. The fruit contains red to purple flesh dotted with many small edible seeds. Cultivated forms are produced in tropical regions, including the Philippines. Photographed in Colombia.