PNGTreesKey – Parastemon versteeghii Merr. & L.M.Perry
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
Journal of the Arnold Arboretum Vol. 21: 197 (1940)
Timber Group: Occasional timber species
Field Characters: Large canopy tree (up to 40 m high); Bole cylindrical (to slightly channelled or fluted near base, up to 100 cm diam.); straight (bole up to 25 m long); buttresses often buttresses present or buttresses absent; spines spines absent; aerial roots aerial roots absent; stilt roots stilt roots absent; Bark dark brown or almost black, rough, scaly or flaky or pustular, lenticels irregular or lenticels rounded/swelling; Subrhytidome (under-bark) red (to pinkish); less than 25 mm thick, 10.0-15.0; bark blaze consisting of one layer; strongly aromatic or faintly to non-aromatic; pleasant; outer blaze red or brown, markings absent or with stripes (faint), granular without splinters; inner blaze red or brown, markings absent or with stripes (faint), granular without splinters; bark exudate (sap) present or absent, colourless, not readily flowing (spotty), colour not changing on exposure to air, not sticky (or very slightly 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), 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 often equally broad throughout much of length, (4.5-) 5.0-10.0 cm, 1.8-3.7 cm; symmetric, entire, not dissected or lobed, sub acute or acuminate (narrowly), venation pinnate, secondary veins open, not prominent, but visible, intramarginal veins absent; leaves lower surface green, upper surface dark green, indumentum (hairs) absent; absent; domatia absent; stipules present, free, laterally placed, not encircling the twig, scale-like, not fringed, small (c. 1 mm long), not persistent.
Flowers: Inflorescence terminal or axillary, flowers on an unbranched axis, cones absent; flowers bisexual, stalked, flowers with many planes of symmetry, 10.0 (c.) mm long, diameter small (up to10 mm diam.) (5-8 mm diam.); perianth present, with distinct sepals and petals whorls, inner perianth white or pale pink; 5 (with hairy margin), free or some or partly joined (by misinterpretation: hypanthium incorrectly regarded as corolla tube); stamens 5, present, free of each other, free of the perianth or joined to the perianth (by misinterpretation: joined to top of hypanthium, together with petals); ovary superior, carpels joined (when more than one), locules 1; styles solitary, 1.
Fruits: Infrutescence arranged on unbranched axis, fruit 15.0-16.0 mm long, not spiny, non-fleshy, simple, indehiscent or slightly dehiscent, follicle (opening by 2 lateral plates on germination to allow seedling to grow), drupe; seeds 1, about 10 mm long, not winged, narrow (longer than wide), seed 1-10 mm diam. (c. 5 mm diam.).
Distribution: West Sepik, Morobe, Western Highlands, Western, Gulf, Manus & Bougainville.
in PNGplants database