Tree 10–18 m high, bole fluted; sometimes with small buttresses, often with stilt-rooted; crown dense, small; bark warm orange brown, smooth, sometimes eye-marked, very finely rugulose; inner bark granular, soft, greyish-brown. Leaves spirally arranged, opposite or 3 verticillate; petioles 1.5–5.5 cm long, slender to stout, grooved above; blade oblong to elliptic, 7–17 by 3.5–11.5 cm, coriaceous, base cuneate, not glandular, margin often pale whitish when fresh and dry, apex ± abruptly acuminate with obtuse tip, shiny above, glabrous or sparsely pilose on nerves, usually drying brown to greyish-green, young leaves purplish; nerves in 6–8 pairs arched to the margin, prominent beneath, reticulation distinct. Staminate inflorescences racemes, 2.5–20 cm long, solitary or 2 together; flowers in groups of 1–3. Staminate flowers: pedicel 2–14 mm long; sepals 4, oblong, lanceolate or ovate, 4–5 mm long, reflexed, glabrous; stamens 14–18. Pistillate inflorescences axillary to terminal, very short, with 3–9 flowers; peduncle 1–2.5 cm long. Pistillate flowers: sepals 3–5, oblong or linear triangular, 1–4 mm long, recurved, margin and outside puberulous; disc annular, fleshy, some denticulate warts; ovary ovoid, acute, mainly 3-locular, glabrous; stigmas 3. Fruits round, green, very slightly flattened, 3.5–5 by 3–4.5 cm, grooved or strongly keeled sutures, ripening orange. Seeds bean shaped, 25–27 by ca 17 mm, black, enclosed in cream jacket.
Common in peat swamp forest. Flowering in September; fruiting in February.
| Name | Language | Country | |
|---|---|---|---|
| ya-ka (ยากา)(Malay-Narathiwat) | Thai | THA |
|
