PNGTreesKey – Hibiscus pulvinulifer Borss.Waalk.
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
Timber Group: Occasional timber species
Field Characters: Large canopy tree (up to 35 m high); Bole cylindrical (up to c. 50 cm diam.); straight (bole up to c. 25 m long); buttresses buttresses present (with short buttresses) or buttresses absent; spines spines absent; aerial roots aerial roots absent; stilt roots stilt roots absent; Bark grey or brown, rough, scaly or flaky or slightly fissured; Subrhytidome (under-bark) green; less than 25 mm thick; bark blaze consisting of one layer; faintly to non-aromatic; outer blaze white or yellow (pale (straw-coloured), markings absent or slightly speckled, fibrous; inner blaze white or yellow (pale (straw-coloured), markings absent or slightly speckled, fibrous; bark exudate (sap) present, colourless, not readily flowing (spotty), colour not changing on exposure to air, not sticky; terminal buds not enclosed by leaves.
Indumentum: Complex hairs present, disk-shaped (peltate) (dense); 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, 9.5-17.0 cm, (6.0-) 9.0-13.0 cm; symmetric, entire, not dissected or lobed, acuminate (shortly), venation pinnate or at base palmate, secondary veins open, prominent, intramarginal veins absent; leaves lower surface pale green, upper surface dark green (dull (usually), indumentum (hairs) absent (but densely covered with peltate scales); absent; domatia present, scattered along midrib; stipules present, free, laterally placed, not encircling the twig, leafy, not fringed, large, not persistent.
Flowers: Inflorescence terminal or axillary (in distil axils), flowers on a branched axis, cones absent; flowers bisexual, stalked, flowers with many planes of symmetry, 12.0-15.0 mm long, diameter large (more than10 mm diam.) (12-15 mm diam.); perianth present, with distinct sepals and petals whorls (with sepals 5-lobed), inner perianth white, yellow (pale (outside), or pink (often finely speckled with red); 5, free; stamens 100, present (of varing lengths), joined (forming a staminal tube around the style), free of the perianth; ovary superior, carpels joined (when more than one), locules 5; styles solitary, 1.
Fruits: Infrutescence arranged on branched axis, fruit 15.0 (c.) mm long, green (probably immature) or brown (presumably (pale to straw-coloured), not spiny, non-fleshy, simple, dehiscent, capsule; seeds 100.
Distribution: Central, Northern & Milne Bay.
in PNGplants database