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PNGTreesKey Dracontomelon lenticulatum Wilkinson

 

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

Dracontomelon lenticulatum Wilkinson

Journal of Natural History. London Vol. 1: 505 (1967)

Other Literature: Ding Hou, Flora Malesiana, Series 1 473 (1978)

Family: Anacardiaceae
Dicotyledon

Timber Group: Occasional timber species

Field Characters: Small sub-canopy tree (10-20 m high); Bole cylindrical (to slightly fluted, 50-60 cm diam.); crooked or straight (bole up to c. 10 m long); buttresses buttresses present (buttresses up to 2.5 m high); spines spines absent; aerial roots aerial roots absent; stilt roots stilt roots absent; Bark grey or brown, slightly rough or smooth, scaly or flaky, scattered pustular, or soon pitted, lenticels rounded/swelling; Subrhytidome (under-bark) pale red or dark brown; less than 25 mm thick, 6.0-8.0; bark blaze with two layers; faintly to non-aromatic; outer blaze pink, markings absent, fibrous; inner blaze white or yellow (pale (straw-coloured), markings absent, fibrous; 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 absent; stinging hairs absent; mature twig indumentum (hairs) absent.

Leaves: Leaves spaced along branches, spiral (leaves occurring singly at a node and arranged spirally up the branchlet), compound (a leaf made up from two or more leaflets); petiole present, not winged, attached to base of leaf blade, swollen (at base); leaves pinnate (unbranched with more than three leaflets); petiolule not swollen or swollen (slightly (at base); rachis present, absent, absent; leaves with a terminal leaflet (the number of leaflets odd - imparipinnate), broadest below middle, 18.0-22.0 cm, 6.0-9.0 cm, leaflets opposite, symmetric, terminal developing leaflet buds straight; venation pinnate, secondary veins open, prominent, intramarginal veins absent; leaves lower surface pale green, upper surface green, indumentum (hairs) absent; absent; domatia absent; stipules absent.

Flowers: Inflorescence axillary (often leaf already fallen off), flowers on a branched axis, cones absent; flowers bisexual, stalked, flowers with many planes of symmetry; perianth present, with all sepals and/or petals (hence tepals) similar, inner perianth green or cream-coloured; 5, free; stamens 5, present, free of each other, joined to the perianth; ovary superior, carpels joined (when more than one), locules 2; styles solitary, 1.

Fruits: Infrutescence arranged on branched axis, fruit 40.0-50.0 mm long, pale brown, not spiny, slightly fleshy, simple, indehiscent, drupe; seeds 1, about 10 mm long, not winged, broad (as wide as long), seed more than 10 mm diam. (up to c. 40 mm diam.).

Distribution: West Sepik, East Sepik, Madang, Morobe & Southern Highlands.


Dracontomelon lenticulatum
Botanical records
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