Small trees, 7-15 m tall. Leaves: petioles 0-1 cm long, not swollen at base; lamina obovate-oblong, 29-62 by 8-24 cm, chartaceous, base cuneate, decurrent onto petiole, margin serrate-crenulate, apex acuminate with a recurved tip, acumen to 1 cm long, lower surface glabrous; midrib flattened prominulous above, very prominent beneath, primary veins 17-23 pairs, brochidodromous, weakly merging 3-5 mm from margin, prominulous on both surfaces, intercostal veins prominulous on both surfaces, reticulate. Cataphylls lanceolate, 2.5-12 by 1-3 cm. Inflorescences terminal spikes, pendulous, 30-80 cm long, densely flowered with up to 120 flowers; rachis c. 5 mm diam., slightly fissured, pulverulent; bracts triangular, c. 10 by 5 mm. Calyx closed in bud, the apex round, pulverulent, rupturing into 2-4 lobes, 0.75-1.75 by 0.75-1.75 cm. Flowers sessile; hypanthium obpyramidal, tetragonous, fissured, 3-7 by 3-5 mm, greyish yellow pulverulent; petals 4, elliptic, 2.25-3 by 0.5-2 cm, cream or white; stamens red or cream; staminal whorls 5-6, the inner one staminodal, staminal tube 4-5 mm high, staminodia connate up to 1 cm, the free filiform part 1-1.5 cm; disc inconspicuous, c. 0.25 mm high; ovary 4-locular, 1-3 ovules per locule; style 4-5.5 cm long. Fruits cylindrical, 8-sided, hooked near base on alternate ribs, 6-7.5 by 3-4 by 3-3.5 cm. Seeds ovoid, slightly fissured, 3-3.5 by 1-2 cm.
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A small tree up to 15 m tall. The trunk is 8 cm across and the twigs are about 1 to 1.5 cm across. The leaves are smooth and hairless and can be 30 to 50 cm long by 8 to 20 cm wide. They are oblong and very shiny. They have a tapering tip that curves backwards and at the base are wedge shaped. The flower stalk is at the end of a branch, is 30 to 80 cm long and hangs down. There can be up to 120 flowers. The fruit are 8 sided and about 6-8 cm long by 3-5 cm across. The seed kernel inside the hard shell inside the fruit is about 3 cm by 1.5-2 cm cross. It is slightly flattened in one direction. This nut tree has short flower stalks (shorter than Barringtonia edulis) and the skin colour of the ripe fruit is purple. The leaves also are almost without stalks. This species differs from Barringtonia novae-hibernae.