2. Pitaya (scientific name: Pitaya' foo-lon') is a cultivated variety of Cactus and a measuring ruler. It climbs up the juicy bush and has air roots. Many branches, extension, often winged leaves, wavy or crenate edges, dark green to light blue-green, bony; Flowers funnel-shaped and open at night; Scales are ovate-lanceolate to lanceolate, calyx-shaped perianth is yellow-green, linear to linear-lanceolate, petaloid perianth is white, oblong-oblanceolate, filaments are yellow-white, styles are yellow-white, berries are red, oblong, fruit umbilicus is small, and pulp is white-red. The seeds are obovate and black, and the hilum is small. Flowering and fruiting in July-65438+February.
3. It is distributed from Central America to northern South America and widely cultivated all over the world. It climbs on tree trunks, rocks or walls by air roots at an altitude of 3-300 meters.
4. This branch cutting is easy to survive, and it is often used as the rootstock for grafting crab claws, clams and many cacti. Flowers can be used as vegetables, berries can be eaten, and the trade name is "dragon fruit".