Syzygium acuminatissimum (Blume) A.DC., Prodr. 3 (1828)

Synonyms
Acmena acuminatissima (Blume) Merr. & Perry
Acmena dielsii Merr. & L.M.Perry
Acmena laevifolia (Ridl.) Merr. & L.M.Perry
Acmena polyantha (K.Schum. & Lauterb.) Merr. & L.M.Perry
Eugenia acuminatissima (Blume) Kurz
Eugenia attenuatifolia Merr.
Eugenia cumingiana Vidal
Eugenia cumingianum Gibbs
Eugenia cuspidato-obovata Hayata
Eugenia eucaudata Elmer
Eugenia gardneri Fern.-Vill.
Eugenia laevifolia Ridl.
Eugenia saligna Merr.
Eugenia subdecurrens Miq.
Jambosa acuminatissima (Blume) Hassk.
Myrtus acuminatissima Blume
Syzygium altissimum Wall.
Syzygium cumingianum (Vidal) Gibbs
Syzygium cuspidato-obovatum (Hayata) Mori
Syzygium subdecurrens Miq.
Xenodendron polyanthum K.Schum. & Lauterb.

Description
Mid-canopy tree up to 34 m tall and 54 cm dbh. Stipules absent. Leaves opposite, simple, penni-veined with marginal vein, but usually venation barely visible, glabrous. Flowers ca. 4 mm diameter, white-pinkish, with protruding stamens, flowers placed in panicles. Fruits ca. 10 mm diameter, red-purple, fleshy berries.

Description
Small canopy tree, 20(-34) m tall, 54 cm diameter, with small buttresses and often stilt roots, pale brown smooth to patchily thinly flaky bark and pink-brown inner bark. Parts hairless. Twig 2-3 mm diameter, round or slightly quadrangular towards apex, pale brown, smooth. Leaves often subopposite; blade c.9 x 4 (3.5-13 x 1.5-4) cm, elliptic to occasionally lanceolate, thinly leathery, drying dull pale brown; base narrowly wedge-shaped tapering into c.8 mm slender stalk, acumen c.2 cm long, slender; sparsely minutely pitted above, without dots beneath; veins unequal, c.12 pairs, distinctly raised more so beneath but slender, hardly or not furrowed above, ascending; tertiaries visible throughout; intramarginal veins close to margin, hardly looped. Panicle 3-terminal or subterminal axillary, 6 cm long, slender, 2-3-branched. Flowers bunched on the branchlets; bud 5x3 mm, club-shaped with 3 mm slender pseudostalk; sepal lobes 4, broadly hemispherical, cupped, deciduous; stamens many, extruded c.4 mm with style, anthers subglobose or broader than long, spreading from the base, end-porous. Fruit c.15 mm diameter, often misshapen, with minute raised sepal-rim, ripening pinkish to purple. [from Tree Flora of Sabah and Sarawak]

Ecology
In undisturbed to slightly disturbed (open) mixed dipterocarp, keranga, sub-montane and montane forests up to 3000 m altitude. On hillsides and ridges, usually with poor sandy to ultrabasic soils, but also on clay and limestone.

Distribution
From India and southern China to New Guinea.

Local names
Borneo: Arang, Obah, Ubah samak.