Quercus argentata Links
Author Korth.
First publication Verh. Nat. Gesch. Ned. Bezitt. Bot.: 215 (1844)
Synonyms Homotypic Synonyms:
Cyclobalanopsis argentata (Korth.) Oerst., Vidensk. Meddel. Naturhist. Foren. Kjøbenhavn 1866: 79 (1866), nom. superfl. Link
Lithocarpus argentatus (Korth.) Merr., Contr. Arnold Arbor. 8: 42 (1934), nom. superfl. Link
Synonyms Heterotypic Synonyms:
Quercus pinanga Blume, Mus. Bot. 1: 303 (1851). Link
Pasania pinanga (Blume) Oerst., Bidr. Egefam.: 49 (1871). Link
Quercus wilhelminae Seemen, Bull. Dép. Agric. Indes Néerl. 1: 9 (1906). Link
Synaedrys wilhelminae (Seemen) Koidz., Bot. Mag. (Tokyo) 30: 193 (1916). Link
Local names -
Range Borneo Sumatera (incl. Bangka) Pen. Malaysia W. Jawa
(42) BOR JAW MLY SUM
Growth habit Medium-very large sized tree 20-40m tall buttresses up to 1-1.5m -
Leaves Spirally arranged – coriaceous – glabrous and glossy above – tomentose with dense silvery stellate hairs on the lower surface – glabrescent – variable in shape from elliptic to oblong to lanceolate or oblanceolate Size ranging from 10-18cm long to 4-7cm wide with an attenuate – rounded or acute slightly asymmetrical base – margins entire and revolute and apices sharply acute to acuminate – acumen short up to 5-15mm long Midrib and nerves strongly prominent beneath and impressed above – between 10-18 pairs of lateral veins – parallel – arching near the leaf margin and forming an angle of 50-75º with the midrib – intercostal venation scalariform but not very clear on either surface Petioles slender – 1-4 cm long – blackened at the base – adaxially flat to grooved or sulcate without hairs
Flowers Male inflorescences 5-10cm long in paniculate clusters of 3-4 on lateral shoots – bracts ovate-acute – 1.5-2 × 0.5-1mm – densely tomentose with simple hairs – perianth 5-lobed – connate at the base – hairy with six stamens and filaments – hairy at their base Female inflorescences many-flowered – slender – 2-3cm long – densely covered with simple hairs – bracts and bracteoles linear-acute – 0.5-1mm long – perianth 4-6-lobed – densely tomentose outside Ovary conical – styles 3-4 – free and slightly recurved and pubescent with long golden-brown hairs at their base Pollination observation absent
Fruits Young cupules turbinate or ovoid-conical – flattened or rounded at the top and attenuate at base 8-12 lamellae are thin – dentate with dense brownish tomentum covering up to 1/3 of the acorn Mature cupules cup-shaped – obconical or obovoid and densely pubescent with 8-10 free lamellae which are denticulate at the rim Acorns elongated conical – cylindrical or ovoid-globose – 2-3 × 1.5-2cm – usually dark chocolate-brown when mature and generally glabrous – the apex is rounded or acute and the base is rounded – flowers appear in July-September with the onset of fruiting starting in the same year in October and continuing until May of the following year – infructescences are persistent on the tree
Bark, twigs and buds Bark dark brown – smooth surface and pale lenticels in vertical lines – sometimes with horizontal cracks Twigs glabrous – densely lenticellate and greyish brown Terminal buds ovoid to globose – 2-3 × 2-2.5mm – tomentose with stellate or simple hairs – glabrescent
Hardiness zone, habitat Tropical lower montane forests up to an elevation of 2700 m above sea level - - -
Miscellaneous The epithet argentata refers to the silvery hairs on the lower surface of its leaves. - - -
Subspecies and varieties - - - -
Uses - - - -

 

 

Distribution map

 

Molecular data

Quercus argentata on GenBank NCBI

Online Plant Databases

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Scanned TYPES

TYPES of Quercus argentata on JSTOR Global Plants
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