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

Latin for 'antiseptic', referring to medicinal properties of the species.

Synonyms
Acmena grata (Wight) Walp.
Calyptranthus aromaticus Blume
Caryophyllus antisepticus Blume
Eugenia antiseptica (Blume) Kuntze
Eugenia collinsa Craib
Eugenia cuprea Koord. & Valet.
Eugenia glaucicalyx Merr.
Eugenia grata Wight
Eugenia macrorhyncha Miq.
Eugenia ovatifolia (Merr. & Perry) Anderson
Eugenia scabrida Wall.
Eugenia scolopophylla Ridl.
Jambos aromatica (Blume) Miq.
Myrtus acuminata Korth. ex Miq.
Myrtus quadrangularis Ham. ex Duthie
Syzygium glaucicalyx (Merr.) Merr.
Syzygium gratum Wall.
Syzygium gratum var. confertum Chantaran. & J.Parn.
Syzygium ovatifolium Merr. & Perry
Syzygium scolophyllum Masamune

Diagnostics
Mid-canopy tree up to 34 m tall and 51 cm dbh. Stipules absent. Leaves opposite, simple, penni-veined with marginal vein but venation usually barely visible, glabrous. Flowers ca. 9 mm diameter, green-white, with many protruding stamens, flowers placed in panicles. Fruits ca. 5 mm diameter, whitish-red-violet, fleshy berries.

Description
Tree, up to 34 m tall, 60 cm diameter; bark becoming orange-brown, thinly papery flaky. Parts hairless. Twig slender, the twigs are round. Leaf blade c.7 x 3(2.5-8 x 1.5-4) cm, small, lanceolate to elliptic, thinly leathery, drying dull pale yellowish- to chocolate-brown and pitted above, dull pale orange-brown and more or less sparsely black dotted beneath; base narrowly wedge shaped, terminating abruptly at the c.5 mm short slender stalk; acumen c.1 cm long caudate; veins subequal, hardly raised though slightly more so beneath, more or less shallowly furrowed above, main veins c.6 pairs, tertiaries obscure, intramarginal vein 1, close to margin, hardly looped. Panicle up to 3 cm long, slender, up to 3 terminal or axillary, 2-branched, with small triangular to acicular subpersistent bracts and bracteoles. Flower bud c.5 x 2 mm, narrowly obovoid-cylindrical, receptacle slender, tapering to base or to 2 mm pseudostalk, smooth and usually bluish milky, sepal lobes 4-5, small, triangular-ovate, acute, erect and clasping the corolla; stamens many, white, extruded c.8 mm, styles c.9 mm. Fruit ripening white, c.6 mm diameter, oblong-spherical, with small crown of incurved apical sepals. [from Tree Flora of Sabah and Sarawak]

Ecology
In undisturbed mixed dipterocarp, coastal and sub-montane forests up to 1800 m altitude. On hillsides and ridges with sandy soils.

Distribution
From India and Sri Lanka to Java and Borneo.

Local names
Borneo: Aeba, Jambu hutan, Obah.