Oaks of the World

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  Quercus kinabaluensis
Author Soepadmo 1968
Synonyms  
Local names  
Range Borneo (Sabah : Mont Kinabalu, Sarawak, Brunei) ; to 2600 m;
Growth habit more than 30 m tall; trunk to 30 cm in diameter;
Leaves 5-10 cm long x 2-5 cm wide; thick, coriaceous; oval-elliptic; apex acute or acuminate, base round or acute, asymmetrical; margin entire; young leaves with dense yellowish brown pubescence, becoming glabrous on both sides; 7-8 pairs of curved lateral veins, forming an angle of 45-60° with the midrib, flat or impressed adaxially, slightly raised beneath; petiole 1 cm long, flat above;
Flowers in February; male catkins 5-11 cm, densely pubescent; male flowers 3, stamens 2 mm long; female inflorescences 1-3 cm, bearing 1-3 flowers; pistillate flowers with thick perianth, recurved styles, no staminodes;
Fruits acorn ovoid-conical 1 cm long, glabrescent, base convex; sub-sessile; basal scar narrow; cup conical 1,5 cm in diameter, with 6-8 pubescent, entire or toothed rings;  ripe between March and May;

Bark, twigs and
buds

bark smooth, reddish brown, covered with whites spots; twigs pubescent at first, brownish, glabrescent, later with sparse lenticels; terminal bud ovoid-globose or ovoid-conical, 4-10 mm long by 3-4; stipules linear-acute, 5-10 mm;
Hardiness zone, habitat not hardy; wet tropical forests on very basic soils;
Miscellaneous

-- Sub-genus Cyclobalanopsis;
-- Section Semiserrata, sub-section Gemelliflorae (Menitsky).
-- resembles Q.oidocarpa but reduced; 

Subspecies and
varieties
 
Pictures