PNGTreesKey – Polyalthia oblongifolia Burck
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
Nova Guinea Vol. 8: 429 (1910)
Timber Group: Minor hardwood
Field Characters: Large canopy tree (up to 30 m high); Bole cylindrical (30-60 cm diam.); straight (bole up to c. 17 m long); buttresses buttresses absent; spines spines absent; aerial roots aerial roots absent; stilt roots stilt roots absent; Bark brown, slightly rough or smooth, slightly cracked; Subrhytidome (under-bark) brown; less than 25 mm thick, 10.0-18.0; bark blaze consisting of one layer; faintly to non-aromatic; pleasant; outer blaze pale yellow or orange (straw-coloured), with stripes, fibrous; inner blaze yellow (pale (straw-coloured), with stripes, fibrous; bark exudate (sap) present, colourless, not readily flowing (spotty), colour not changing on exposure to air, not sticky; terminal buds enclosed by leaves.
Indumentum: Complex hairs absent; stinging hairs absent; mature twig indumentum (hairs) present, hairs sparse.
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 occasionally equally broad throughout much of length, 17.0-34.0 cm, 12.0-16.0 cm; very asymmetric, entire, not dissected or lobed, acuminate, venation pinnate, secondary veins open, prominent, intramarginal veins absent; leaves lower surface green, upper surface dark green (glossy), indumentum (hairs) absent; absent; domatia absent; stipules absent.
Flowers: Inflorescence on the trunk or branches, flowers arising from a single point or flowers on an unbranched axis (axis very short), cones absent; flowers bisexual, stalked, flowers with many planes of symmetry, 15.0-20.0 mm long, diameter large (more than10 mm diam.) (c. 15 mm diameter); perianth present, with distinct sepals and petals whorls, inner perianth cream-coloured or pale green; 6, free; stamens many 100, present (very short), free of each other, free of the perianth; ovary superior, carpels separate (when more than one), locules 1 (per carpel); styles free, 1 (per carpel).
Fruits: Infrutescence arising from single point, fruit 15.0-20.0 mm long, 15.0 (c.) mm diam., orange, not spiny, fleshy (leathery), aggregate (but fertilised carpels not joing together to form a single fruit), indehiscent, berry; seeds 1 (per carpel), about 10 mm long, not winged, broad (as wide as long), seed 1-10 mm diam. (c. 8 mm diam.).
Distribution: West Sepik, East Sepik, Madang, Morobe, Eastern Highlands, Western, Gulf, Central, Northern, Milne Bay, Papuan Islands & New Britain.
in PNGplants database