Small to large trees, 2-40 m tall. Leaves: petiole 0.5-5 cm long, swollen at base, slightly winged; lamina obovate to elliptic, 8-21 by 5-7.5 cm, subcoriaceous, base cuneate, slightly confluent onto petiole, margins serrate-crenulate, revolute, apex acuminate, the acumen 4-12 mm long, beneath glabrous; midrib prominulous on both surfaces, primary veins 7-10 pairs, brochidodromous, arching but not joined at margin, prominulous on both surfaces, intercostal veins prominulous on both surfaces, finely reticulate. Inflorescences ramiflorous or rarely terminal spikes, pendulous, 13-70 cm long, with up to 65 flowers, rachis 3-7 mm diam., accrescent, often fissured, slightly pubescent; bracts triangular, c. 4 by 2 mm; bracteoles triangular, c. 0.5 by 0.5 mm. Calyx open in bud. Flowers sessile; hypanthium tetragonous with distinctly winged edges, 3-9 by 2.5-6 mm, often pulverulent; petals white or pink; stamens white or pink; staminal whorls 4-5, the inner one staminodal, staminal tube 3-4 mm high, staminodia c. 1.25 cm long; disc a thin distinct ring, 1-2 mm high; ovary 3-4-locular, 3-4(-5) ovules per locule; style c. 4 cm long. Fruits tetragonous with distinct wings on edges when young, later ovoid with 8 ridges, 10-12 by 3-5 by 3-5 cm. Seeds single, ovoid, tetragonous, 3-6 cm long.
More
A spreading tree. It grows 7-20 m tall. It can be up to 40 m tall. The trunk can be 3-40 cm across. It can have buttresses 2 m high. The bark is scaly and with fine cracks along it. It is brown or red and peels off in small flakes. The leaves are slightly rough. They are glossy bright green. The leaf stalk is 5 cm long. The leaf blade is oval to oblong and 8-21 cm long by 5-8 cm wide. The flowers are on a long stalk that hangs down. It can be 70 cm long. There can be 65 flowers. They are like tubes with 3-4 lobes. They are greenish-white or pinkish-red. The fruit is oval and is a one seeded berry. It is 10-12 cm long by 3-5 cm wide. It has 8 ridges. It is green with a reddish tinge. The young fruit are 4 sided with distinct wings. The seed is oval and 5-6 cm long by 2 cm wide. They are yellow-white.
Rainforests, in both dense primary forest and the more open, secondary formations; in low, undulating country in Borneo and in swampy forest and by rivers in Malaysia; at elevations up to 1,400 metres.
More
A tropical plant. It grows in the forest at low altitudes. It can grow up to 1400 m altitude. It grows in swampy forests and near streams.
Home
