Oaks of the World

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  Quercus argentata
Author Korth. 1844
Synonyms Cyclobalanopsis argentata (Korth.) Oerst. 1867
pinanga Bl. 1851
wilhelminae Seemen 1906
Lithocarpus argentatus (Korth.) Merr. 1934
Local names  
Range Borneo; Sumatra; Malacca; Western Java; to 2700 m on Kinabalu Mount;
Growth habit 30 m and more; trunk to 1 m in diam.
Leaves 10-20 cm long, 3-8 cm wide; leathery; elliptic, oblong, lanceolate or oblanceolate; slightly glaucous, glabrous and bright above; dull below with dense silvery stellate tomentum, glabrescent; margin entire, revolute; apex sharply acute or acuminate; base attenuate, rounded or acute, slightly asymmetrical; 10-17 pairs of secondary veins, parallel, impressed above, strongly raised beneath, at 50-75° angled with the midrib; thin, sulcate, glabrous, 1-4 cm long petiole; 
Flowers from July to September ; male inflorescences 5-10 cm long, densely hairy; male flowers hairy; female inflorescences 2-3 cm long, many flowered, densely hairy ; female flowers with 3-4 pubescent styles 1 mm long; no staminodes ;
Fruits acorn 2-3 cm long and 1.5-2 cm in diameter, ovoid or cylindrical; cup with 8-12 concentric rings, covering 1/3 to 1/2 of nut; thick ringed peduncle; maturing between October and May;

Bark, twigs and
buds

smooth, pale grey bark; twig glabrous, greyish brown, densely covered with warty, brown lenticels; terminal bud ovoid to globose, glabrescent, 2-3 mm long; stipules hairy, linear, 3-5 mm;
Hardiness zone, habitat not hardy;
Miscellaneous -- A. Camus : n° 58;
-- Sub-genus Cyclobalanopsis;
-- Section Cyclobalanoides (Menitsky)
Subspecies and
varieties
 
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