Syzygium havilandii (Merr.) Merr. & Perry, Mem. Amer. Ac. 18 (1939)

Synonyms
Eugenia havilandii Merr.

Diagnosis
Upper canopy tree up to 50 m tall and 70 cm dbh. Stipules absent. Leaves opposite, simple, penni-veined, venation inconspicuous, glabrous. Flowers ca. 8 mm diameter, white, with protruding stamens, flowers in panicles. Fruits ca. 16 mm diameter, green-yellowish, fleshy berries.

Description
Subcanopy small or medium size tree with slender stilt roots; bark pale grey-brown, smooth, hoop-marked. Parts hairless. Twig 2-3 mm diameter, slender, round, grey- to pink-brown. Leaf blade c.12 x 6(6-13 x 3-6.5) cm, elliptic to broadly lanceolate, thinly leathery, drying dull rich red-brown, clearly pitted above, faintly or not dotted beneath; base broadly wedge-shaped, tapering into c.8 mm rather stout stalk, acumen to 1 cm tapering; veins subequal, c.35 pairs, ascending, hardly raised beneath not so above, narrowly impressed above and often on both surfaces, tertiaries obscure, intramarginal vein 1, c.1 mm within margin, hardly looped. Panicle 3-terminal or subterminal axillary, to 4 cm long, 2 mm diameter, quadrangular, 3-branched. Flower bud to 4 x 3.5 mm, obconical, tapering to base without distinct pseudostalk, with 4-5 to 0.5 x 3 mm vestigial shallowly triangular acute sepal thick margined lobes round a rim; stamens many, stamens and style shortly extruded at flowering. Fruit to 15 x 12 mm, green, ellipsoid, smooth or slightly ribbed with more or less depressed apex and c.2 mm diameter hardly raised calyx rim. [from Tree Flora of Sabah and Sarawak]

Ecology
In undisturbed mixed dipterocarp, keranga, (peat)-swamp and sub-montane forests up to 1330 m altitude. Often on alluvial sites, but also common on hillsides and ridges. Usually on poor sandy soils, but also on clay.

Distribution
Borneo.

Local names
Borneo: Obah, Ubah, Ubah kelabu, Ubah lapit.