Lithocarpus leptogyne (Korth.) Soepadmo

Species

Angiosperms > Fagales > Fagaceae > Lithocarpus

Characteristics

Tree 10-40 m, 10-90 cm ø; buttresses up to   tall, 1½ m tall 1 ⅓ m out, 10 cm thick; bark pale grey-brown, lenticellate. Branchlets initially densely fulvous tomentose by stellate hairs, later subgla-brous, sparsely lenticellate; terminal buds ovoid-ellipsoid, 3-5 by 2-3 mm, scales narrowly ovate-acute. Stipules linear, 4-5 by ⅔-1 mm. Leaves thin-coriaceous, (8-)12-15(-18) by (3-)3½-5 (-5½) cm (index (2½-)2.7-3.3(-3.6)), broadest at or above the middle; surfaces more or less discolor-ous, above] dull, greyish green to pale chocolate-brown, sparsely stellate hairy especially on the midrib and nerves, underneath with a thin cover of pale yellowish brown to pale greyish green, adpressed, minute stellate hairs; base acute to rarely rounded, usually asymmetrical, top abruptly 1-1½ cm acuminate; midrib prominent on both sides; nerves 11-14 pairs, flat beneath, impressed above, subparallel at an angle of 45-60°, arcuating but not anastomosing towards the margin; reticulation fine, lax, subscalariform, obscure to rather distinct beneath; petiole 3-6 mm, 1-2 mm ø, densely tomentose by stellate hairs, shallowly furrowed. Inflorescence male, androgynous or mixed, densely greyish brown stellate hairy; bracts and bracteoles ovate, 1-1½ by ⅔-1 mm. Male rachis 10-15 cm, 1 mm ø, usually much-branched; ♂ flowers in clusters of 3, filaments 3-4 mm, anthers 0.35 mm long, pistillode subglobose, 1-1½ mm ø. Androgynous or mixed rachis 5-10 cm, 1 mm ø; female flowers solitary, staminodes rudimentary or well-developed and exceeding the perianth, styles 3, terete, 1-1½ mm, recurved. Ripe cupule ⅓ cm stalked, saucer-shaped, 3-6 mm long, 1.3-2 cm ø; rim thin, covering the basal part of the fruit; wall woody, thin, inside densely fulvous-tomentose by adpressed simple hairs, outside densely fulvous stellate hairy; scales adpressed, in 6-10 concentric rows. Ripe fruit depressed ovoid, 1.2-1.7 cm long, 1½-2 cm ø, densely fulvous to mentose by adpressed simple hairs, soon glabres-cent, top rounded-acute, base rounded, scar deeply concave to rarely flat, 1 cm ø; wall woody, 1 mm thick, for the greater part free from the cupule.
Life form -
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality monoecy
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Mature height (meter) 10.0 - 40.0
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Photosynthetic pathway c3

Environment

Forests, from sea-level up to 1500 m. Fl. Aug.-July, fr. Sept.-May.
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Hardiness (USDA) 9-12

Usage

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Edible -
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Cultivation

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Distribution

Lithocarpus leptogyne world distribution map, present in Indonesia, Iceland, and Malaysia

Identifiers

LSID urn:lsid:ipni.org:names:358840-1
WFO ID wfo-0000230040
COL ID 3VJY4
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Lithocarpus leptogyne Quercus leptogyne Cyclobalanus leptogyne