Syzygium jambos is a species of rose apple originating in Southeast Asia and occurring widely elsewhere, having been introduced as an ornamental and fruit tree. Description Syzygium jambos is a large shrub or small-to-medium-sized tree, typically high, with a tendency to low branching. Its leaves and twigs are glabrous and the bark, though dark brown, is fairly smooth too, with little relief or texture. The leaves are lanceolate, broad, long, pointed, base cuneate with hardly any petiole, lively red when growing, but dark, glossy green on attaining full size. The flowers are in small terminal clusters, white or greenish white, the long, numerous stamens giving them a diameter of . In temperate regions the tree is summer-flowering. The fruit is shaped like some kinds of guava; in fact, the fruit is so like the guava in appearance that people unfamiliar with it may mistake it for a guava on sight. However, the fragrance, flavour and texture are different, and instead of containing dozens of small, hard seeds set in a jelly-like tissue, as a guava does, the fruit of S. jambos usually contains one or two large, unarmoured seeds about a cm in diameter, lying loose in a slightly fluffy cavity when ripe. Shaking a fruit to feel whether the seeds rattle, gives some indication whether it is ripe. The skin is thin and waxy. The flowers are described by some as fragrant, though this appears to be a variable attribute. The ripe fruit, however, has a strong, pleasant floral bouquet, hence such common names as "Rose apple" and "pomarrosa". Taxonomy Botanical names Syzygium jambos Family: Myrtaceae Genus: Syzygium Species: jambos Synonym: Eugenia jambos Synonym: Jambosa jambos Synonym: Jambosa vulgaris Synonym: Myrtus jambos The tree has variously been allocated to the genus Jambosa, Eugenia and Syzygium, where it now seems to have been permanently accepted. There have been a few species ascribed to it, but currently several varieties with various fruit colours all are recognised as Syzygium jambos. Common names Syzygium jambos has several common names, reflecting the large number of regions in which it occurs as a garden or fruit tree or as an invader. The names include ಪನ್ನೇರಳೆ , Guljamun , madhura nelli, Malabar Plum, Panineer Champakka, Mountain Apple (champoo), chom pu or chom-phu. Terms like "plum rose", "water apple", "pera de agua", "Cloud apple", "Wax apple", "Malay apple", "jambrosade", "PauTêe"(Penang Hokkien spelled with Taiwanese Romanisation System), "pomarrosa",