PNGTreesKey – Geijera salicifolia Schott


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

Geijera salicifolia Schott

Fragmenta Botanica, Rutaceae (1834)

Family: Rutaceae

Timber Group: Minor hardwood

Field Characters: Small sub-canopy tree or Large canopy tree (up to 35 m high); Bole cylindrical (up to c. 80 cm diam.); straight (bole up to c. 27 m long); buttresses buttresses absent; spines spines absent; aerial roots aerial roots absent; stilt roots stilt roots absent; Bark brown, brownish black, or brownish orange, rough, fissured or scaly or flaky (large and irregular); Subrhytidome (under-bark) yellow or red; less than 25 mm thick, 10.0-15.0; bark blaze consisting of one layer; strongly aromatic; pleasant (slightly citrus-like); outer blaze yellow (pale (straw-coloured) or white, with stripes, fibrous; inner blaze white or yellow (pale (straw-coloured), with stripes, fibrous; bark exudate (sap) present, pale yellow or colourless, not readily flowing (spotty), colour changing on exposure to air, to pale brown, black, or golden-coloured, not sticky or slightly sticky; terminal buds not enclosed by leaves.

Indumentum: Complex hairs absent; 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 sometimes equally broad throughout much of length or broadest at or near middle, 6.0-15.0 cm, 3.0-6.0 (-8.0) cm; symmetric, entire, not dissected or lobed, obtuse or bluntly acuminate, 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 absent.

Flowers: Inflorescence axillary, flowers on a branched axis, cones absent; flowers bisexual, stalked, flowers with many planes of symmetry, 2.0-2.5 mm long, diameter small (up to10 mm diam.) (2-3 mm diam.); perianth present, with distinct sepals and petals whorls, inner perianth white; 5, free; stamens 5, present, free of each other, free of the perianth; ovary superior, carpels joined (when more than one), locules 5; styles solitary, 1.

Fruits: Infrutescence arranged on branched axis, fruit 5.0-7.0 mm long, 5.0-6.0 mm diam., green (dark (surface speckled with small oil dots), not spiny, fleshy, simple, indehiscent (irregularly split into two), schizocarp (consisting of one seed in one locule); seeds 1, to about 5 mm long (5-6 mm long), not winged, broad (as wide as long) (black), seed 1-10 mm diam. (4-5 mm diam.).

Distribution: Morobe or Central.

Geijera salicifolia
Botanical records
in PNGplants database

Map details