The Namambe tree is believed to be indigenous to Vanuatu. It is an evergreen tree with a large dense canopy and short, thick, irregular buttresses. The tree grows to around 20 m in height. The flowers are fragrant and white to pale yellow. They are pollinated by bees and bats, fruit bats also spreading the seeds. Fallen fruit and seeds can be used in fish farming as food for freshwater fish and prawns. Four types of Namambe are found in Vanuatu and can be distinguished by the fruit shape and colour.
Namambe leaves are oblong in shape and are dark green and leathery. They are 160 to 390 mm long and 70 to 130 mm wide. The leaf veins are opposite and yellow.
Flowers of Namambe are white to cream or pale yellow. They are fragrant and form a cluster at the ends of branches and twigs. The flowers are around 1 cm long with five petals.
The fruit is egg shaped but irregular. It occurs either as single fruit or in clusters. The fruits are 45 to 130 mm long and 35 to 120 mm wide. Young fruit are green and ripen to orange-brown, though in some types the fruit remains green when ripe. The seeds are large and encased within the fruit. In Vanuatu, four morphotypes are distinguished by fruit shape and colour.
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