Family : Lecythidaceae
Text © Pietro Puccio
English translation by Mario Beltramini
The species is native to the Fiji Islands and Vanuatu where it grows along the coasts in the humid tropical forests up to about 400 m of altitude.
The genus is honoured to the English lawyer and naturalist Daines Barrington (1727-1800); the name of the species is the Latin term “edulis” = edible, eatable, with reference to the seeds.
Common names: box-fruit tree, cut nut, heart tree, pan nut, pao nut, yum yum tree (English); navele (Bislama); vutu, vutu valu, vutu kana (Fijian); nuez de Fiji (Spanish).
The Barringtonia edulis Seem. (1866) is a little ramified evergreen tree, 6-18 m tall, with erect trunk of 30-40 cm of diameter and smooth grey-brown bark. The leaves, grouped at the extremities of the branches on a 0,5-1,5 cm long petiole, are simple, entire with slightly undulated margins, oblong-elliptic with pointed apex, 16-45 cm long and 5-18 cm broad, coriaceous, of glossy intense green colour on the upper page, of paler colour below, and prominent nervations.Terminal drooping racemose inflorescences covered by an ashen-coloured tomentum, 50-80 cm long, carrying numerous hermaphrodite flowers, close and spirally arranged on the rachis, with globose calyx, initially then entire dividing in 2-4 roundish lobes of crimson colour, 4 oblong white petals, a crowd of yellow or cream white stamina arranged in verticils of 4-8, up to about 8 cm long, and a style longer than the stamina.
The fruit is an indehiscent (which does not open spontaneously when ripe) oblong berry with persistent calyx, usually slightly at tetra or pentagonal section, tomentose, 5-10 cm long and of 3,5 cm of diameter, of colour varying from green-grey to red or purple, with fibrous mesocarp and woody endocarp enclosing one oblong white seed 2-3 cm long and of 1 cm of diameter.
It reproduces by seed in organic loam, with addition of sand or perlite per a 30% for improving the drainage, kept humid at the temperature of 22-24 °C.Particularly ornamental species due to its great and glossy leaves and the long and showy inflorescences, cultivable exclusively in the tropical and humid subtropical climate zones in full sun or slight shade, especially when young, on soils rich of organic substance kept humid.
In its origin places it is often found planted in the villages around the houses and along the roads and the paths.
The seeds, the edible part of the fruits, of pleasant taste, are consumed raw, boiled or roasted; bark and leaves are utilized in the traditional medicine for various pathologies.
The wood is light, of a density of about 480 kg/m3, and is employed in the constructions, for coverings, paddles, tools and everyday objects and also, locally, as fuel.
Synonyms: Butonica edulis (Seem.) Miers (1875); Huttum edule (Seem.) Britten (1901).