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PNGTreesKey Lithocarpus schlechteri Markgr.

 

Barry Conn (NSW) & Kipiro Damas (LAE).
Guide to trees of Papua New Guinea
Copyright held by the authors, National Herbarium of New South Wales, and Papua New Guinea National Herbarium

Lithocarpus schlechteri Markgr.

Botanische Jahrbucher für Systematik, Pflanzengeschichte und Pflanzengeographie Vol. 59: 69 (1924) Fig. 2.

Other Literature: E. Soepadmo, Flora Malesiana, Series 1, 346 (1972)

Family: Fagaceae
Dicotyledon

Timber Group: Major exportable hardwood

Field Characters: Large canopy tree (10-30 m high) or Small sub-canopy tree; Bole cylindrical (30-55 cm diam.); straight (bole up to c. 20 m long); buttresses buttresses absent (slightly fluted at base); spines spines absent; aerial roots aerial roots absent; stilt roots stilt roots absent; Bark grey, brown, or almost black, slightly rough or smooth, slightly scaly or flaky or slightly pustular, lenticels elongated vertically; Subrhytidome (under-bark) dark red or brown; less than 25 mm thick; bark blaze consisting of one layer; faintly to non-aromatic; outer blaze red or pale brown, markings absent; inner blaze white (towards wood) or pale red, markings absent; bark exudate (sap) present, colourless, not readily flowing (spotty), colour not changing on exposure to air, not sticky; terminal buds not enclosed by leaves.

Indumentum: Complex hairs present, star-like (stellate); stinging hairs absent; mature twig indumentum (hairs) present (initially) or absent, hairs dense to sparse.

Leaves: Leaves spaced along branches, spiral (leaves occurring singly at a node and arranged spirally up the branchlet), simple (a leaf composed of a single blade); petiole present (5-8 mm long), not winged, attached to base of leaf blade, not swollen; leaves broadest at or near middle or rarely broadest below middle, (7.0-) 8.0-12.0 (-16.0) cm, (3.0-) 3.5-5.0 (-6.0) cm; symmetric, entire, not dissected or lobed, sub acute, venation pinnate, secondary veins open, prominent (7-)8-9(-10) pairs), intramarginal veins absent; leaves lower surface pale brown or grey, upper surface dark brown, indumentum (hairs) absent (above) or present (adpressed stellate hairs below), indumentum (hairs) dense or sparse; absent; domatia absent; stipules present, free, laterally placed, not encircling the twig, ovate leafy, not fringed, small (1-1.5 mm long), not persistent.

Flowers: Inflorescence axillary or leaf-opposed, flowers single (female) or flowers on an unbranched axis (male, rarely female, in clusters of 2s or 3s), cones absent; flowers unisexual, unisexual with male and female flowers on the same plant, not stalked, flowers slightly asymmetric, 2.0-3.0 mm long, diameter small (up to10 mm diam.) (c. 3 mm diam.); perianth present, with all sepals and/or petals (hence tepals) similar, inner perianth pale yellow; 6, some or partly joined; stamens 10-(staminodes in female flowers)-12, present, free of each other, free of the perianth; ovary inferior, carpels joined (when more than one), locules 2-6 (-9); styles free, 3-6.

Fruits: Infrutescence single, fruit 25.0-35.0 mm long, dark brown, not spiny, non-fleshy, simple, indehiscent, nut; seeds 1, much more than 10 mm long (c. 20 mm long), not winged, broad (as wide as long), seed more than 10 mm diam. (15-20 mm diam.).

Distribution: Madang, Morobe, Western Highlands, Eastern Highlands, Southern Highlands & Central.


Lithocarpus schlechteri
Botanical records
in PNGplants database

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