Tree 8-15 m tall, 20 cm diam. Foliage buds 6-14 mm long. Adult leaves linear-lanceolate to lanceolate, 7-11 cm by 6-8 mm, narrowly acute, narrowing somewhat gradually at the base to a 3-4 mm petiole, cuticle thick, sometimes with lateral vascular resin canals distinctly larger than the median canal, midrib above a prominent ridge with nearly vertical sides, 0.2-0.3 mm wide, 0.2 mm high. Pollen cones 3.5 cm, sessile, solitary; apex of the microsporophyll a small triangular spur c. 0.2 mm long. Seed-bearing structure on a 8-16 mm peduncle; foliola 2-4 mm long; receptacle 10-11 mm long, formed of two unequal bracts, becoming red when mature. Seed with its covering, including a blunt apex, 9-11 by 7-8 mm.
In local forest populations, probably on poor soils, in N. Sumatra at 2500-3300 m, near Wissel Lakes at 1800 m.
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