Tall buttressed tree. Young twig, bud and petiole shortly buff pubescent, glabrescent. Twig c. 2 mm ø apically, terete, rugulose; stipule unknown. Leaves 6-14 by 2.5-5.5 cm, ovate or elliptic, margin ± revolute, base obtuse to cuneate; acumen to 8 mm long; nerves 8-13 pairs, slender but prominent beneath, curved, at c. 50°; tertiary nerves scalariform, unraised, narrowly channelled, beneath; midrib applanate above, prominently terete beneath; petiole 10-16 mm long, terete. Flowers unknown. Panicle to 6 cm long, singly branched, terete, rugulose, shortly evenly buff puberulent. Flower bud to 6 by 4 mm, fusiform. Perianth puberulent on parts exposed in bud; sepals ovate, subacute. Stamens 15, in 3 unequal verticils; filaments broad at base, tapering; anthers ellipsoid; appendages same length as anthers, slender, glabrous. Ovary and stylopodium pyriform, puberulent except at apex, surmounted by a short glabrous style. Fruit pedicel to 2 mm long, puberulent. Fruit calyx sparsely puberulent to glabrescent; 3 longer lobes to 7 by 1.5 cm, spatulate, obtuse, 4 mm wide above the 6 by 5 mm tuberculate incrassate base; 2 shorter lobes to 4.5 by 0.7 cm, otherwise similar. Nut to 2.2 by 0.7 cm, narrowly ovoid, densely shortly pale buff pubescent.
An emergent tree in undisturbed mixed dipterocarp forests at elevations up to 1,100 metres. Found on hillsides and ridges, growing in basic to weakly acid, fertile, volcanic soils.
More
Local, on fertile soils overlying or influenced by basic volcanic crocks, to 1100 m.
Can be grown by seedlings. Seeds needs soaking.
Home
