Oaks of the World

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  Quercus subsericea
Author A.Camus 1933 Bull. Soc. Bot. France 80: 354
Synonyms sericea Scheff. 1870, not Willd. 1805
Cyclobalanopsis sericea (Scheff.) Schottky 1912
Local names  
Range Borneo (Sarawak); Malaysia; Sumatra; West Java; 850 to 1500 m;
Growth habit may reach 20 m; trunk to 40 cm in diameter;
Leaves 4-15 x 2.5-5 cm; thin but leathery; elliptic to lanceolate, seldom oval; apex acuminate (cuspid 0.5-1 cm long); base rounded or attenuate; margin slightly revolute, entire or remotely serrulate near apex; hairless, shiny above; paler beneath with scattered stellate silky tomentum, sometimes glabrous; 6-12 pairs of secondary veins, sunken above, more or less raised beneath, curved near limb margin, forming an angle of 45-60° with the midrib; slender petiole 1-2 cm long, sulcate above;
Flowers flowering irregularly; male catkins 4-6 cm, with numerous flowers; male flowers singly to 3 together, perianth tomentose 5-6-lobed, 5-7 stamens; female inflorescence 1-2 cm, with 2-5 flowers, densely tomentose; pistillate flowers tomentose, ovary ovoid or globose, 3-4 styles 1 mm long;
Fruits acorn ovoid, conical or subglobose, 1-2 cm long, silky; base rounded; cup flat, pubescent, 7-8 concentric, denticulate rings, with thin wall;

Bark, twigs and
buds

bark grey brown, fissured or scaly; twig initially densely tomentose, glabrescent, minutely lenticellate; terminal buds ovoid to subglobose, tomentose, 3-4 mm long; stipules linear, acute, 5-7 mm long;
Hardiness zone, habitat not hardy;
Miscellaneous -- A. Camus : n 86;
-- Sub-genus Cerris, Section Cyclobalanopsis;
-- Section Oidocarpa, sub-section Oidocarpae (Menitsky).
-- Closely related to Q.oidocarpa;
Subspecies and
varieties
 
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