PNGTreesKey – Lithocarpus megacarpus Soepadmo
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
Reinwardtia Vol. 8: 259 (1970)
Other Literature: E. Soepadmo, Flora Malesiana, Series 1, 346 (1972)
Timber Group: Major exportable hardwood
Field Characters: Large canopy tree (9-30 m high) or Small sub-canopy tree; Bole cylindrical (up to c. 50 cm diam.); straight (bole 9-20 m long); buttresses buttresses absent; spines spines absent; aerial roots aerial roots absent; stilt roots stilt roots absent; Bark grey or pale brown, rough, slightly fissured or slightly pustular, lenticels elongated vertically; Subrhytidome (under-bark) green or brown (with greenish red stripes); less than 25 mm thick, 15.0 (c.); bark blaze consisting of one layer; faintly to non-aromatic; outer blaze red or brown, markings absent, granular with splinters; inner blaze red or brown, markings absent, granular with splinters; 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, disk-shaped (peltate) or star-like (stellate); stinging hairs absent; mature twig indumentum (hairs) present, hairs dense.
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, not winged, attached to base of leaf blade, not swollen; leaves broadest at or near middle or rarely broadest below middle, (8.5-) 11.0-14.0 (-16.0) cm, (3.5-) 5.0-6.0 (-8.0) cm; symmetric, entire, not dissected or lobed, acute or acuminate, venation pinnate, secondary veins open, prominent, intramarginal veins absent; leaves lower surface pale green, brown, or grey, upper surface green, brown, or grey, indumentum (hairs) absent (above) or present (minutely adpressed stellate hairs), indumentum (hairs) dense or sparse; absent; domatia absent; stipules present, free, laterally placed, not encircling the twig, leafy (narrowly ovate), not fringed, large (10-15 mm long), not persistent.
Flowers: Inflorescence axillary or leaf-opposed, flowers single (female) or flowers on an unbranched axis (male & female sometimes in clusters of 3s), cones absent; flowers unisexual, unisexual with male and female flowers on the same plant, not stalked, flowers slightly asymmetric, 2.0-(c.; c. (female flowers); (male flowers)-4.0 mm long, diameter small (up to10 mm diam.) (2-4 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)-15, present, free of each other, free of the perianth; ovary inferior, carpels joined (when more than one), locules (2-) 6 (-9); styles free, 3.
Fruits: Infrutescence single or arranged on unbranched axis, fruit 20.0-35.0 mm long, brown (dark glossy), not spiny (basally with rough cap), non-fleshy, simple, indehiscent, nut; seeds 1, much more than 10 mm long (12-25 mm long), not winged, broad (as wide as long), seed more than 10 mm diam. (15-30 mm diam.).
Distribution: Morobe, Western Highlands, Eastern Highlands, Southern Highlands, Gulf, Central & Milne Bay.
in PNGplants database