Oaks of the World

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  Quercus pseudoverticillata
Author Soepadmo1966 Gard. Bull. Singapore 21: 380
Local names
Range Borneo (Kinabalu Mount) ; to 1650 m; 
Growth habit more than 25 m tall; trunk to 0,9 m in diameter;
Leaves 7-17 cm x 3-6.5; coriaceous ; pseudo-whorled at the end of twig; oblanceolate-oblong or elliptic-lanceolate; margin entire, revolute; apex rounded or obtuse; , base slightly cordate to auriculate; hairless above; some simple hairs beneath; 8-15 vein pairs, curved but parallel, forming an angle of 30-45° with the midrib, flat or slightly impressed adaxially, strongly prominent beneath; petiole 0.5-1 cm, glabrescent, flat above;
Fruits acorn to 5 cm long and 3 cm wide, sericeous, apex rounded sometimes depressed, base flat or convex; cupule bowl-shaped, 10-12 concentric dentate rings; ripe from October to February;

Bark, twigs and

bark furrowed into numerous, small, rectangular plates; twigs hairless, with lenticels; terminal bud somewhat globose, 2-3 mm;
Hardiness zone, habitat not hardy;
Miscellaneous -- Sub-genus Cerris, Section Cyclobalanopsis;
-- Section Oidocarpa, sub-section Pseudoverticillatae (Menitsky).
-- Very rare species. Threatened (IUCN Red List Category : CR)

Subspecies and