PNGTreesKey – Syzygium richardsonianum Merr. & L.M.Perry
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
Journal of the Arnold Arboretum Vol. xxiii: 274 (1942)
Timber Group: Non-timber species
Field Characters: Large canopy tree (up to 40 m high) or Small sub-canopy tree (often a large shrub); Bole cylindrical (up to c. 40 cm diam.); straight (bole up to c. 21 m long); buttresses buttresses present (buttresses up to 4 m high); spines spines absent; aerial roots aerial roots absent; stilt roots stilt roots absent; Bark brownish red, pale brown, or pale orange, smooth or slightly rough, scaly or flaky (slightly (papery); Subrhytidome (under-bark) green; less than 25 mm thick; bark blaze consisting of one layer; faintly to non-aromatic; outer blaze yellow (pale (straw-coloured), pink, or pale brown, markings absent, fibrous; inner blaze yellow (pale (straw-coloured), pink, or pale brown, markings absent, fibrous; bark exudate (sap) absent; terminal buds not 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) (to slightly sub-opposite), 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, 10.0-15.0 cm, 4.0-5.0 cm; symmetric, entire, not dissected or lobed, acuminate, venation pinnate, secondary veins open, not prominent, but visible or not visible, intramarginal veins absent; leaves lower surface green (dull (to sub-glossy) or pale green, upper surface dark green (glossy), indumentum (hairs) absent; present (perhaps not always easy to see); domatia absent; stipules absent.
Flowers: Inflorescence axillary or on the trunk or branches (on branches below leaves), flowers on a branched axis, cones absent; flowers bisexual, stalked, flowers with many planes of symmetry, 10.0 (c.) mm long, diameter small (up to10 mm diam.) (8-10 mm diam.); perianth present, with distinct sepals and petals whorls, inner perianth white; 4, free; stamens 100, present, free of each other, free of the perianth (attached to hypanthium); ovary inferior, carpels joined (when more than one), locules 2; styles solitary, 1.
Fruits: Infrutescence arranged on branched axis, fruit 40.0-48.0 mm long, 45.0-52.0 mm diam., white or cream-coloured, not spiny, fleshy, simple, indehiscent, drupe; seeds 1, much more than 10 mm long (c. 40 mm long), not winged, broad (as wide as long), seed more than 10 mm diam. (c. 40 mm diam.).
Distribution: Madang, Morobe, Western Highlands, Eastern Highlands, Southern Highlands, Gulf, Central, Northern, Papuan Islands, New Britain & Manus.
in PNGplants database