Changes

*A large tree up to 50 m tall, with columnar bole up to 130 cm in diameter and large plank buttresses; leaves .*Leaves clustered at tip of twigs, narrowly obovate to obovate, with slender transverse tertiary veins distinct beneath, densely brownish woolly beneath; flowers .*Flowers in 4-12-flowered clusters, borne on 30-45 mm long pedicels, yellowish-white; fruit .*Fruit oblong, 3.5-5 cm long, glabrous.  ''P.'' ''clarkeanum'' is an uncommon tree of primary lowland forest below 300 m altitude; it occurs scattered. The timber is heavy for nyatoh, with a density of about 820 kg/m³at 15% moisture content.