PNGTreesKey – Ficus subtrinervia Lauterb. & K.Schum.
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
Nachträge zur Flora der Deutschen Schutzgebiete in der Südsee 271 (1901)
Other Literature: C.C.Berg & E.J.H.Corner, Flora Malesiana, Series 1 160-162 (2005) Fig. 36.
Timber Group: Non-timber species
Field Characters: Small sub-canopy tree or Large canopy tree (20-40 m high); Bole cylindrical (60-70 cm diam.); straight (bole up to 20 m long); buttresses buttresses present (buttresses up to 1.3 m high); spines spines absent; aerial roots aerial roots absent; stilt roots stilt roots absent; Bark greyish green, brown (often mottled), or grey, almost smooth or slightly rough, slightly fissured or pustular, lenticels elongated vertically; Subrhytidome (under-bark) green; less than 25 mm thick, 18.0-20.0; bark blaze consisting of one layer; strongly aromatic; pleasant; outer blaze pale brown or pink, with stripes, granular without splinters or slightly fibrous; inner blaze pink or pale brown, with stripes, granular without splinters or slightly fibrous; bark exudate (sap) present, white/milky, flowing, colour changing on exposure to air, to brown or golden-coloured, sticky; terminal buds not enclosed by leaves.
Indumentum: Complex hairs absent; stinging hairs absent; mature twig indumentum (hairs) absent or present when young, 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 below middle, (3.0-) 5.0-15.0 (-20.0) cm, (2.0-) 3.0-6.0 (-7.5) cm; symmetric, entire, not dissected or lobed, sub acuminate, sub acute, or obtuse, venation pinnate, secondary veins open, not prominent, but visible, intramarginal veins absent; leaves lower surface green, upper surface dark green (glossy), indumentum (hairs) absent or present, indumentum (hairs) sparse (adpressed hairs on midrib of lower surface); absent; domatia absent; stipules present, free, laterally placed, not encircling the twig, leafy, not fringed, large (15-20 mm long), usually persistent.
Flowers: Inflorescence axillary, flowers on an unbranched axis (flowers within a synconium/fig) or flowers arising from a single point (with syconium/fig in pairs), cones absent; flowers unisexual, unisexual with male and female flowers on the same plant, stalked (shortly) or not stalked, flowers with many planes of symmetry (synconium/fig), with one plane of symmetry (male and female flowers), or completely asymmetric, 3.0-5.0 mm long, diameter small (up to10 mm diam.) (2-3 mm diam.); perianth present, with all sepals and/or petals (hence tepals) similar (membranous), inner perianth red; 3-4, some or partly joined (shortly (at base); stamens 1 (male flowers), present, free of each other, free of the perianth; ovary superior (female flowers), carpels solitary, locules 1; styles solitary, 1.
Fruits: Infrutescence arising from single point (syconium/fig in pairs on short-shoots on older wood) or arranged on unbranched axis (individual fruits arranged within a fleshy synconium/fig), fruit 15.0-20.0 mm long, 15.0-20.0 mm diam., dark red, not spiny, fleshy, syconium (fig), indehiscent, syconium (fig) or achene (individual fruits within synconium/fig); seeds 100 (per synconium/fig), barely visible (to 1 mm long), not winged, narrow (longer than wide), seed less than 1 mm diam.
Distribution: East Sepik, Madang, Morobe, Gulf, Central, Northern, Milne Bay, Papuan Islands, New Britain & Manus.
in PNGplants database