Cactaceae: Hylocereus sp.: 5 high res. images.
Hylocereus sp for identification from Andhra University Botanical garden, Visakhapatnam, Andhra Pradesh
Hylocereus undatus (Haw.) Britton & Rose
No … Its different from this
It was growing in Andhra University Botanical Garden for more than 50 years, Only flowering no fruit set is observed since its flowering