PNGTreesKey – Terminalia macadamii Exell


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

Terminalia macadamii Exell

Blumea Vol. 7: 324 (1953)

Other Literature: M.J.E. Coode, Handbooks of the Flora of Papua New Guinea 87-89 (1978) Fig. 20-38.

Family: Combretaceae

Timber Group: Major exportable hardwood

Field Characters: Emergent tree or Large canopy tree (to at least 25 m high, sometimes to 37 m); Bole cylindrical (c. 40 cm diam.); straight (bole up to c. 18 m long); buttresses buttresses present (often up to 1.5 m high) or buttresses absent; spines spines absent; aerial roots aerial roots absent; stilt roots stilt roots absent; Bark green or grey, rough, pustular, lenticels elongated vertically; Subrhytidome (under-bark) red; less than 25 mm thick, 12.0-20.0; bark blaze consisting of one layer; faintly to non-aromatic; outer blaze white (straw-coloured) or yellow, with stripes, granular with splinters; inner blaze white (straw-coloured) or yellow, with stripes, granular without splinters; terminal buds not enclosed by leaves.

Indumentum: Complex hairs absent; stinging hairs absent; mature twig indumentum (hairs) present when young or later absent, hairs dense to sparse.

Leaves: Leaves clustered at end of branches to 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 above middle to broadest at or near middle, (8.5-) 11.0-15.0 (-18.0) cm, (4.5-) 6.0-9.0 (-12.0) cm; symmetric, entire, not dissected or lobed, obtuse to acute or sometimes mucronate, venation pinnate, secondary veins open, prominent, intramarginal veins absent; leaves lower surface green, upper surface dark green, indumentum (hairs) present (lower surface at least on veins), indumentum (hairs) dense; absent; domatia absent; stipules absent.

Flowers: Inflorescence axillary, flowers on an unbranched axis, cones absent; flowers unisexual and bisexual, unisexual with male and female flowers on the same plant, stalked, flowers with many planes of symmetry, 3.0-5.0 mm long, diameter small (up to10 mm diam.); perianth present, with all sepals and/or petals (hence tepals) similar, inner perianth red (reddish hairs present) and green; 5, some or partly joined; stamens 5, present, free of each other, free of the perianth; ovary inferior, carpels joined (when more than one), locules 1; styles solitary, 1.

Fruits: Infrutescence arranged on unbranched axis, fruit 29.0-35.0 mm long, red, not spiny, slightly fleshy, simple, indehiscent, drupe; seeds 1, about 10 mm long, not winged, broad (as wide as long), seed 1-10 mm diam.

Distribution: Madang, Morobe, Northern, Milne Bay & Papuan Islands.

Terminalia macadamii
Botanical records
in PNGplants database

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