PNGTreesKey – Neuburgia corynocarpa (A.Gray) Leenh. var. corynocarpa


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

Neuburgia corynocarpa (A.Gray) Leenh. var. corynocarpa

Flora Malesiana, Series 1, Vol. 6: 363 (1963)

Other Literature: B.J. Conn, Handbooks of the Flora of Papua New Guinea 177-179 (1995) Fig. 40-41.

Family: Loganiaceae

Timber Group: Occasional timber species

Field Characters: Large canopy tree (20-30 m high); Bole cylindrical (40-60 cm diam.); straight (bole 10-15 m long); buttresses sometimes buttresses present or usually buttresses absent; spines spines absent; aerial roots aerial roots absent; stilt roots stilt roots absent; Bark dark brown, rough or slightly smooth, scaly or flaky or fissured; Subrhytidome (under-bark) green; less than 25 mm thick, 6.0 (c.); bark blaze consisting of one layer; faintly to non-aromatic; outer blaze white or pale yellow, markings absent; inner blaze white or pale yellow, markings absent; bark exudate (sap) absent; 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 above middle or broadest at or near middle, (6.0-) 8.0-16.0 (-28.0) cm, (2.0-) 4.0-7.0 (-11.0) cm; symmetric, entire, not dissected or lobed, rounded to obtuse or sub acuminate, venation pinnate, secondary veins open, prominent, intramarginal veins absent; leaves lower surface pale green, upper surface green, indumentum (hairs) absent; absent; domatia absent; stipules present, joined, joined across twigs, encircling the twig, collar-like to leafy, not fringed, large, persistent.

Flowers: Inflorescence terminal, flowers on a branched axis, cones absent; flowers bisexual, not stalked, flowers with many planes of symmetry, (2.0-) 2.5-4.0 (-4.5) mm long, diameter small (up to10 mm diam.) (3-4 mm diam.); perianth present, with distinct sepals and petals whorls, inner perianth white; 5, some or partly joined; stamens 5, present, free of each other, joined to the perianth; ovary superior, carpels joined (when more than one), locules 2; styles solitary, 1.

Fruits: Infrutescence arranged on branched axis, fruit 15.0-25.0 (-50.0) mm long, white or rarely red, not spiny, non-fleshy, simple, indehiscent, drupe; seeds 1 (-2), much more than 10 mm long (up to 15 mm long), not winged, narrow (longer than wide), seed 1-10 mm diam. (c. 6 mm diam.).

Distribution: West Sepik, East Sepik, Madang, Morobe, Western Highlands, Eastern Highlands, Southern Highlands, Western, Gulf, Central, Northern, Milne Bay, Papuan Islands, New Britain, New Ireland, Manus & Bougainville.

Neuburgia corynocarpa var. corynocarpa
Botanical records
in PNGplants database

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