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PNGTrees Syzygium bicolor Merr. & L.M.Perry


Barry Conn (NSW) & Kipiro Damas (LAE).
Copyright held by the authors, Royal Botanic Gardens and Domain Trust, and Papua New Guinea National Herbarium

Syzygium bicolor Merr. & L.M.Perry

Journal of the Arnold Arboretum Vol. 23: 286 (1942)

Family: Myrtaceae
No. Non-timber species

Field Characters: Small trees or large trees 20 m high. Bole cylindrical 20 cm diam.; straight bole 10 m long; buttresses absent; spines absent; aerial roots absent; stilt roots absent. Bark grey or brown, almost smooth, slightly pustular with raised horizontal rings; lenticels elongated laterally; subrhytidome green; bark thickness <25 mm thick, 3.0 mm thick; blaze consisting of one layer; strongly aromatic; pleasant sweet aroma; outer blaze green or orange, markings absent, fibrous; inner blaze orange or green, markings absent, fibrous; exudate present, colourless, spotty, changing colour on exposure to air, to orange or brown, not sticky. Terminal buds not enclosed by leaves; complex hairs absent; stinging hairs absent; mature twig without hairs.

Leaves: Spaced along branches <internodes readily visible>. Leaves opposite, simple; petiole present 15-17 mm long, not winged, attached to base of leaf blade <not peltate>, swollen <at tip, or base, or both> lamina broadest at or near middle, (3.0-) 7.5-9.5 cm long, (3.0-) 4.5-6.3 cm wide; lamina symmetric to very slightly asymmetric, margin entire, not dissected or lobed, apex mucronate or obtuse, venation pinnate <secondary veins arising from the midrib along its length>, secondary veins open <spaced far apart to easily see tertiary veins>, prominent, intramarginal veins present; lower surface blue-green, pale green, or green, upper surface glossy dark green, hairs absent; oil dots present; domatia absent; stipules absent.

Flowers: Inflorescence terminal <at branch ends>. Flowers on a branched axis; flowers bisexual, stalked, with many planes of symmetry <actinomorphic>, 10.0-12.0 mm long, small (< or =10 mm diam.) 8-10 mm diam.; perianth present, with distinct sepals and petals, white; inner perianth 5, free; stamens 100, filaments present, free of each other, free of perianth; ovary inferior <seated below the petals and sepals; epigenous>, carpels joined (when more than one) <syncarpous> styles solitary <including joined together>, 1.

Fruits: Fruits arranged on branched axis. Not spiny, simple.

Distribution: Eastern Highlands.

Syzygium bicolor
Botanical records
in PNGplants database

Map details

Conn 5177.
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