A climbing cactus that attaches via numerous roots that shoot out of the fleshy "vines". It has large (8-10" across) white flowers that open up soon after sunset and wilt the following morning. The fruit that develop are initially green but turn bright magenta inside and out when ripe. They are covered in fleshy scales and contain hundreds of small black seeds inside.
The fruit are often used in making drinks that combine limes, dragonfruit and sugar with water in a blender. A personal favorite of mine is made with passion-fruit instead of limes.