(Shrub to) tree, up to 20 m high, dbh up to 24 cm; (with slight buttresses or) with stiltroots. Twigs 1.5-5 mm thick. Leaves: petiole up to 7 cm long; rachis also up to 7 cm long; leaflets usually broad-elliptic, fairly strongly dorsiventrally curved, apex usually distinctly acuminate, acumen usually cuneate and acute, up to 3 cm long. Inflorescences if axillary 2 cm long or more, glabrous or rarely sparsely hairy. Sepals: outer ones distinctly smaller than inner ones, all fleshy or inner partly peta-loid, glabrous but for the margin. Petals up to 3 by 1.2 mm. Disc in female flowers nearly always interrupted in front of the inner sepal which lies in between the two outer ones (in S 9007, however, at the same place as in male flowers), in male flowers either uninterrupted or interrupted in front of the outermost one of the three inner sepals.