Changes

*''Shorea vulgaris'' Pierre ex Lanessan (1886), *''Isoptera burckii'' Boerl. (1901).

*A medium-sized to very large tree up to 60 m tall with cylindrical bole branchless for 15-25 m and up to 200(-300) cm in diameter with prominent buttresses up to 3 m high; leaves .*Leaves oblong-lanceolate, 5.5-14 cm × 2.5-6 cm, thinly leathery, with (11-)15-19 pairs of secondary veins; petals .*Petals narrow, stamens 20-28, the appendages with few bristles; fruit .*Fruit calyx lobes unequal, up to 5.5 cm × 1 cm, nut up to 8 mm × 5 mm.  ''S. guiso'' is most common in areas with a slightly seasonal climate. It occurs on well-drained red soils in lowland forest up to 600 m altitude, although it is confined to limestone hills in western and central Borneo. The density of the wood is 675-1000 kg/m³at 15% moisture content. See also the table on wood properties.