PNGTreesKey – Duabanga moluccana Blume
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
Museum Botanicum Lugduno-Batavum sive stirpium Exoticarum, Novarum vel Minus Cognitarum ex Vivis aut Siccis Brevis Expositio et Descriptio Vol. 1: 109
Other Literature: J.J. Havel, Forest Botany, Part 2 Botanical Taxonomy 222 (1975) Fig. 62.
Timber Group: Occasional timber species
Field Characters: Large canopy tree (up to 40 m high); Bole markedly fluted (often up to c. 100 cm diam.); often crooked or straight (bole up to 1.5 m long); buttresses buttresses present; spines spines absent; aerial roots aerial roots absent; stilt roots stilt roots absent; Bark red or brown, rough, fissured, peeling, or pustular, lenticels rounded/swelling; Subrhytidome (under-bark) pale brown; less than 25 mm thick, 20.0; bark blaze with two layers; strongly aromatic; pleasant; outer blaze brown or mixed colours (dark and light brown), markings absent; inner blaze brown (pale (darkening rapidly), 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 absent; stinging hairs absent; mature twig indumentum (hairs) absent.
Leaves: Leaves spaced along branches, opposite (in pairs, opposite one another on the branchlet) (arranged in one plane), simple (a leaf composed of a single blade); petiole present, not winged, attached to base of leaf blade, not swollen; leaves broadest below middle, 12.5-20.0 cm, 4.0-7.5 cm; symmetric, entire, not dissected or lobed, sub acute or acuminate, venation pinnate, secondary veins open, prominent, intramarginal veins present; leaves lower surface pale green, upper surface dark green (glossy), indumentum (hairs) absent; absent; domatia absent; stipules absent.
Flowers: Inflorescence terminal (few-flowered inflorescences), flowers on a branched axis, cones absent; flowers bisexual, stalked, flowers with many planes of symmetry, 20.0-30.0 mm long, diameter small (up to10 mm diam.) (8-12 mm diam.); perianth present, with distinct sepals and petals whorls, inner perianth white or pink; 4, some or partly joined (at base); stamens 16 (c.), present, free of each other, free of the perianth; ovary superior, carpels joined (when more than one), locules 4; styles solitary, 1.
Fruits: Infrutescence arranged on branched axis, fruit 20.0 (c.) mm long, brown or black, not spiny, fleshy (leathery), simple, dehiscent, capsule; seeds 100, to about 5 mm long (4-6 mm long), not winged, narrow (longer than wide), seed 1-10 mm diam. (c. 1 mm diam.).
Distribution: West Sepik, Madang, Morobe, Western Highlands & Western.
in PNGplants database
Notes: Notes This genus is sometimes included in the Family Sonneratiaceae.