Campnosperma auriculatum Hook.F.

Tree up to 38 m high and 80(-135)cm Ø. Buttresses absent or up to 1 m high, 1½ m wide, 10-20 cm thick. Bark white to fawn, hoop-marked, smooth or shallowly fissured and/or papery flaky. Young foliage pinkish brown to brownish green, mature foliage green, old leaves withering yellow to brownish yellow. Leaves obovate to oblanceplate, 12-63 by 5-20 cm (up to 72(-120) by 18(-25)cm on vegetative twigs or sapling), pubescent on both surfaces when young, glabrescent and sometimes almost glabrous except the basal part; base narrowly decurrent and forming a pair of auricles (sometimes obscure on leaves of young twigs or saplings) near the insertion; apex obtuse, sometimes emarginate; nerves 16-23(-50) pairs, veins reticulate-scalariform, usually more distinct on the lower surface; petiole obscure. Panicles up to 50 cm long, profusely branched, branches up to 20 cm; bracts triangular, c. ⅓ mm long; pedicels ⅔-¾ mm. Flowers lemon yellow. Calyx lobes triangular, ⅓-½ mm long. Petals broadly elliptic or ovate, 1-1½ by ½-⅔ mm. Stamens ½-1¼ mm; staminodes in ♀ shorter and smaller. Disk ½-1¼ mm Ø. Ovary subglobose, c. ¾ mm Ø. Drupe subglobose, 6-8 by 5-6 mm, dull reddish purple when ripe; septum solid.

Co-dominant to rare in freshwater (peat-) swamps to common or rare in mixed primary forest on well-drained soils, also in secondary forest, from 5-1000 m, once at 1600 m (W. Kutai). Fl. fr. Jan.-Dec.

Uses. The timber is used for making canoes ( ENDERT Tectona 18 1925 80 ). Exudate from the wood is called terentang-oil ( HEGNAUER Chemotax. Pfl. 3 1964 96 ), which is harmful to some persons (CORNER, 1940).Mr. K. M. KOCHUMMEN (Kepong, in litt. 25-3-76) informed me that there is no information regarding its (local) uses in Malaya. He said that one of their officers once got a bad attack of irritation similar to that of rengas on his hands by getting into contact with the oil.

Can be grown by seedlings.