Selenicereus undatus

[5] Dragonfruit stems are scandent (climbing habit), creeping, sprawling or clambering, and branch profusely.Spines on the adult branches are 1 to 4 mm (0.039 to 0.157 in) long, being acicular (needle-like) to almost conical, and grayish brown to black in colour and spreading, with a deep green epidermis.Their colour is greenish-yellow or whitish, rarely rose-tinged; These outer tepals, or sepals are about 65 in number, and bring the flower to a total width of up to fourteen inches (35 centimeters).Stamens 5 to 10 cm (2.0 to 3.9 in) long, are declinate, inserted in one continuous zone from throat to 35 mm (1.4 in) above the pericarpel and cream.They climb by use of aerial roots and can reach a height of 10 meters (32.8 feet) or more growing on rocks and trees.
The red pitahaya at the Chiayi market, Taiwan
The flowers in Rome
Mature fruits
S. undatus shoots overlooking Lanikai and Na Mokulua , Oahu , Hawaii .
Scientific classificationPlantaeTracheophytesAngiospermsEudicotsCaryophyllalesCactaceaeCactoideaeSelenicereusBinomial nameHaworthSynonymspitahayaAmericashybridMartiniqueWest IndiesTaiwanAreolespericarpeltepalssepalsKona, HawaiibracteoleslithophytichemiepiphyticNa MokuluaHawaiiDanishEstonianPunahou SchoolpitayaChinesepinyinList of culinary fruitsRoyal Botanic Gardens, KewWikidataEcocropiNaturalistNatureServeObservation.orgOpen Tree of LifePlant ListSpecies+Tropicos