Pitahaya /Dragonfruit (Hylocereus undatus) A pitaya or pitahaya is the fruit of several cactus species. “Pitaya” usually refers to fruit of the genus Stenocereus, while “Pitahaya” or “Dragonfruit” always refers to fruit of the genus Hylocereus. These fruits are commonly known as “dragon fruit” as in the Chinese huo( lóng guo(, “fire dragon fruit”, and lóng zhu- guo(, “dragon pearl […]