Changes

*A medium-sized to fairly large tree up to 35 m tall, bole straight, cylindrical, branchless for up to 16 m, up to 100 cm in diameter, with prominent buttresses, bark surface pale grey; stipules .*Stipules subpersistent to caducous, narrow; leaves with 1-13 leaflets, leaflets with tapering to acute or bluntly acuminate apex, margin entire but serrulate to dentate in young plants, glabrous to pilose on the midrib above and the veins below, with (7-)12-15(-20) pairs of secondary veins; inflorescence .*Inflorescence spicate to narrowly paniculate; flowers .*Flowers 3-7 mm long, stamens 6; fruit .*Fruit ovoid to subglobose, circular to slightly trigonous in cross section, 9-14 mm × 4-11 mm, glabrous.  This highly variable species is divided into 2 subspecies: subsp. ''asperum'' and subsp. ''papuanum'' (H.J. Lam) Leenh. (synonym: ''Canarium papuanum'' H.J. Lam). The former is further divided into 2 varieties: var. ''asperum'' and var. ''clementis'' (Merr.) Leenh. (synonyms: ''Canarium clementis'' Merr., ''Canarium leytense'' Elmer, ''Canarium wenzelii'' Merr.). The various taxa are mainly distinguished by the type of inflorescence. ''C. asperum'' is common and occurs in a wide variety of habitats, from dry to wet forest, sometimes in open forest or even savanna, up to 500(-1800) m altitude. The density of the wood is 495-635 kg/m³at 15% moisture content.