Syzygium chloranthum (Duthie) Merrill & Perry, Mem. Amer. Ac. 18 (1939)

Synonyms
Eugenia chlorantha Duthie
Eugenia hulletiana King
Syzygium griseum Airy Shaw

Diagnostics
Subcanopy tree to 30 m tall and 60 cm diameter. Stipules absent. Leaves opposite, simple, penni-veined with secondary veins placed close together, barely visible, glabrous. Flowers ca. 14 mm diameter, white-pinkish, many protruding stamens, flowers placed in panicles. Fruits ca. 9 mm diameter, green-purplish, fleshy berries.

Description
Subcanopy tree to 30 m tall and 60 cm diameter with dark red-brown smooth bark and stilt roots. Parts hairless. Twig 2-3 mm diameter, slender, elliptic, distinct golden- to rich rust-brown, smooth. Leaf blade c.10 x 4.5(4-15 x 2.5-8) cm, elliptic to lanceolate, thinly leathery, drying dark greenish-brown, slightly glistening on both surfaces, with scattered pits above, small black spots beneath; base wedge-shaped, tapering into c.1 cm stalk; acumen c.8 mm long subcaudate; midrib usually somewhat raised either side of its median furrow above; veins subequal, slightly ascending, equally slender, distinctly elevated somewhat more so beneath than above, c.25 pairs with shorter intermediates, tertiaries lax, visible throughout, intramarginal vein close to margin, hardly looped. Panicle to 7 cm but usually to 4 cm long, slender, round, to 3-terminal but mostly to 2-axillary, singly branched. Flower bud to 10 x 5 mm, broadly clove shaped, tapering to base with slight waist at pseudostalk, sepal lobes 4, broadly shortly ovate-hemispherical, subacute, cupped, hyaline towards marins, spreading at flowering but early dehiscing, stamens many protruding 8 mm pale greenish white with red-tinged anthers. Fruit to 1.5 cm diameter, spherical, obscurely ribbed, with prominently lobed c.4 mm diameter calyx rim, ripening with purplish flush. [from Tree Flora of Sabah and Sarawak]

Ecology
In undisturbed mixed dipterocarp, keranga and sub-montane forests up to 1200 m altitude. Usually along or near rivers and streams on alluvial sites, including peat-swamps. On sandy soils and limestone.

Distribution
Indo-China, Thailand, Peninsular Malaysia, Sumatra, Borneo.

Local names
Borneo: Obah, Ubah, Ubah puteh.