PNGTreesKey – Syzygium acutangulum Nied.
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
in Engler & Prantl, Die Natürlichen Pflanzenfamilien Vol. 3, 7: 85 (1893)
Timber Group: Occasional timber species
Field Characters: Large canopy tree (20-40 m high); Bole cylindrical (up to 60 cm diam.); straight (bole up to 20 m long); buttresses buttresses present (buttresses up to 1.5 m high); spines spines absent; aerial roots aerial roots absent; stilt roots stilt roots absent; Bark brownish red or brown (pale (often with pinkish tinge), rough, scaly or flaky (to slightly papery); Subrhytidome (under-bark) green; bark blaze consisting of one layer; faintly to non-aromatic; outer blaze brown (dark to pale, often golden-coloured), markings absent, fibrous; inner blaze brown (dark to pale, often golden-coloured), markings absent, fibrous; bark exudate (sap) present, colourless, not readily flowing (spotty), colour changing on exposure to air, to purple, 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), 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, 10.0-17.0 cm, 3.5-7.0 cm; symmetric, entire, not dissected or lobed, acuminate (shortly) or obtuse, venation pinnate, secondary veins open, not prominent, but visible, intramarginal veins absent; leaves lower surface green, upper surface dark green (glossy), indumentum (hairs) absent; present (dense); domatia absent; stipules absent.
Flowers: Inflorescence axillary or on the trunk or branches, flowers on a branched axis, cones absent; flowers bisexual, stalked, flowers with many planes of symmetry, 3.0-4.0 mm long, diameter small (up to10 mm diam.) (3-4 mm diam.); perianth present, with distinct sepals and petals whorls, inner perianth white; 4, free; stamens 100, present, free of each other, free of the perianth (attached to hypanthium); ovary inferior, carpels joined (when more than one), locules 2; styles solitary, 1.
Fruits: Infrutescence arranged on branched axis, fruit 7.0-8.0 mm long, 7.0-8.0 mm diam., bluish red, not spiny, fleshy, simple, indehiscent, drupe; seeds 1-2, to about 5 mm long (5-6 mm long), not winged, broad (as wide as long), seed 1-10 mm diam. (4-4.5 mm diam.).
Distribution: East Sepik, Madang, Morobe, Western Highlands, Central, Milne Bay, New Britain, New Ireland & Bougainville.
in PNGplants database