PNGTreesKey – Neonauclea glabra (Roxb.) Bakh.f. & C.E.Ridsdale
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
Blumea Vol. 34: 240-242 (1989) Fig. 13-(map; plate)-27.
Timber Group: Non-timber species
Field Characters: Large canopy tree (up to 45 m high); Bole cylindrical; straight (bole up to 18 m long); buttresses rarely buttresses present or buttresses absent; spines spines absent; aerial roots aerial roots absent; stilt roots stilt roots absent; Bark brown or grey, slightly rough, scaly or flaky or cracked; Subrhytidome (under-bark) pink; less than 25 mm thick; bark blaze consisting of one layer; faintly to non-aromatic; outer blaze brown or yellow, markings absent; inner blaze brown or yellow, markings absent; bark exudate (sap) absent; terminal buds 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, 10.0-18.0 (-22.0) cm, (4.0-) 5.0-10.0 cm; symmetric, entire, not dissected or lobed, sub acute, venation pinnate, secondary veins open, not prominent, but visible, intramarginal veins absent; leaves lower surface pale green, upper surface dark green, indumentum (hairs) absent; absent; domatia absent; stipules present, joined, joined across twigs, not encircling the twig, leafy, not fringed, large (usually 10-20 mm long, sometimes as long as 28 mm), not persistent.
Flowers: Inflorescence terminal, flowers arising from a single point, cones absent; flowers bisexual, stalked (shortly (subsessile), flowers with many planes of symmetry, 6.0-9.0 mm long, diameter small (up to10 mm diam.) (3-4 mm diam.); perianth present, with distinct sepals and petals whorls, inner perianth white or cream-coloured; 5, some or partly joined; stamens 5, present (short), free of each other, joined to the perianth; ovary inferior, carpels joined (when more than one), locules 2; styles solitary, 1.
Fruits: Infrutescence arising from single point (forming a globular fruiting head 10-20 mm diam.), fruit 4.0-5.0 mm long, 2.0 (c.) mm diam., pale brown, not spiny, non-fleshy, multiple, dehiscent (each fruitlet), capsule (each fruitlet splitting into 4 values); seeds 1 (per fruitlet; many per globular fruiting head), to about 5 mm long, winged (shortly at both ends), narrow (longer than wide) (somewhat bilaterally flattened), seed 1-10 mm diam. (c. 2 mm diam.).
Distribution: Central, Northern & Milne Bay.
in PNGplants database