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Quercus argentata | |
Author | Korth. 1844 Verh. Nat. Gesch. Ned. Bezitt., Bot. 215 1844. |
Synonyms | Cyclobalanopsis
argentata (Korth.) Oerst. 1867 pinanga Bl. 1851 wilhelminae Seemen 1906 Lithocarpus argentatus (Korth.) Merr. 1934 |
Local names | pinang pinang |
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 |
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 : tome 1, p. 311, n° 58; -- Sub-genus Cerris, Section Cyclobalanopsis; -- Section Cyclobalanoides (Menitsky) |
Subspecies and varieties |
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