PNGTreesKey – Dubouzetia novoguineensis A.C.Sm.


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

Dubouzetia novoguineensis A.C.Sm.

Journal of the Arnold Arboretum Vol. 25: 271 (1944)

Other Literature: M.J.E. Coode, Handbooks of the Flora of Papua New Guinea 53-55 (1981) Fig. 15.

Family: Elaeocarpaceae

Timber Group: Non-timber species

Field Characters: Small sub-canopy tree (up to 24 m high, deciduous); Bole cylindrical; straight; buttresses buttresses absent; spines spines absent; aerial roots aerial roots absent; stilt roots stilt roots absent; Bark red or brown, rough, strongly fissured; less than 25 mm thick; bark blaze with two layers; faintly to non-aromatic; outer blaze red or brown, markings absent; inner blaze yellow, markings absent; bark exudate (sap) absent; terminal buds not enclosed by leaves.

Indumentum: Complex hairs absent; mature twig indumentum (hairs) present when young or soon absent, hairs dense to 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 above middle to broadest at or near middle, 4.0-7.0 (-11.0) cm, 2.0-3.0 (-6.5) cm; symmetric, occasionally entire, crenate, or serrate to dentate (toothed), not dissected or lobed, rounded, obtuse, or acute, venation pinnate, secondary veins open, prominent, intramarginal veins absent; leaves lower surface green or yellow, upper surface dark green, indumentum (hairs) absent or present (on midrib of lower surface), indumentum (hairs) sparse; absent; domatia absent; stipules absent.

Flowers: Inflorescence axillary, flowers on an unbranched axis, cones absent; flowers bisexual, stalked, flowers with many planes of symmetry, 20.0-23.0 mm long, diameter small (up to10 mm diam.) (10-12 mm diam.); perianth present, with distinct sepals and petals whorls, inner perianth white (or cream-coloured); 5, free; stamens 25 (c.), present, free of each other, free of the perianth; ovary superior, carpels joined (when more than one), locules 3-4; styles solitary, 1.

Fruits: Infrutescence arranged on unbranched axis, fruit 15.0 (c.) mm long, brown or grey, not spiny, fleshy, simple, dehiscent, capsule; seeds 6-(2 or 3 per locule)-9, to about 5 mm long, not winged, broad (as wide as long), seed 1-10 mm diam.

Distribution: Morobe, Eastern Highlands & Central.

Dubouzetia novoguineensis
Botanical records
in PNGplants database

Map details