Changes

*''Canarium polyphyllum'' K. Schumann (1889), *''Canarium ledermannii'' Lauterb. (1920).

*A medium-sized tree up to 30 m tall, bole up to 45 cm in diameter, buttressed, bark surface grey; stipules .*Stipules absent; leaves with 7-25 leaflets, leaflets shortly acuminate to gradually long-acuminate at apex, margin entire, glabrous or minutely pubescent on the midrib above and main veins below, with 11-24 pairs of secondary veins which are prominent below; inflorescence .*Inflorescence axillary, laxly paniculate; male .*Male flowers 6 mm long, female ones 7.5 mm long, stamens 6; fruit .*Fruit ellipsoid, acute, circular to rounded triangular in cross-section, 40-50 mm × 20-25 mm, glabrous.  ''C. rigidum'' occurs in primary and secondary forest, up to 1200 m altitude.