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

Synonyms
Calyptranthus racemosa Blume
Eugenia brunneoramea Merr.
Eugenia cerasiformis (Blume) DC.
Eugenia euneura Craib
Eugenia evansii Ridl.
Eugenia expansa (Miq.) Duthie
Eugenia jamboloides Koord. & Valet.
Eugenia robinsoniana Ridl.
Jambosa cerasiformis (Blume) Hassk.
Myrtus cerasiformis Blume
Syzygium brunneorameum (Merr.) Masamune
Syzygium calcimontanum P.S.Ashton
Syzygium cerasiforme (Blume) Merr. & L.M.Perry
Syzygium costatum Miq.
Syzygium expansum Wall.
Syzygium javanicum Miq.

Diagnostics
Mid-canopy tree up to 37 m tall and 40 cm dbh. Stipules absent. Leaves opposite, simple, penni-veined, secondary veins placed close together, venation conspicuous to inconspicuous, glabrous. Flowers ca. 9 mm diameter, white, with protruding stamens, flowers placed in panicles. Fruits ca. 16 mm diameter, green-white-reddish, fleshy berries.

Description
Small or canopy tree to 30(-37) m tall, 40 cm diameter, with to 2 m thick long buttresses and stilt roots; bark at first light grey-brown and whitish mottled, becoming brown with thick long powdery flakes. Parts hairless. Twig endings c.2 mm diameter, slender, round, pale yellowish cream, or golden- or grey-brown to red-brown, smooth becoming minutely pimpled and wrinkled. Leaf blade c.13-15 x 4-7 cm but variable, narrowly elliptic-lanceolate to -ovate, thinly leathery, drying dull purple-brown above, chocolate-brown beneath, obscurely sparsely pitted above minutely distinctly dotted beneath; base round or broadly wedge-shaped, tapering into or abruptly terminating at the slender 0.8 mm long stalk; acumen to 2 cm slender; veins very fine but more or less unequal, main veins c.18 pairs, spreading, arched, dense, evident and slightly raised on both surfaces slightly more so beneath, not furrowed, spreading, tertiaries visible throughout forming a distinct raised net beneath, dense; intramarginal veins 1(2) pairs, 1-2 mm within, hardly looped. Panicle to 5 cm long, to 3-terminal or axillary to ramiflorous, slender, round with spreading branchlets bearing the many flowers bunched at the endings. Flower to 9 x 3mm, clove- becoming trumpet-shaped at anthesis, only slightly waisted, tapering through the slender pseudostalk to base, the sepal lobes vestigial or at most 0.5 x 2 mm, hyaline, early caducous eventually forming a rim round base of the domed corolla; corolla splitting off as a cap at flowering; stamens white, many radiating on c.10 mm straight filaments; style extruding c.8 mm, slender. Fruit to 2 cm diameter, spherical with eventually inconspicuous calyx rim. [from Tree Flora of Sabah and Sarawak]

Ecology
In undisturbed to slightly disturbed (open) mixed dipterocarp forests up to 200 m altitude. On hillsides and alluvial sites with sand to clay soils, but also on limestone.

Distribution
Thailand, Peninsular Malaysia, Sumatra, Java, Lesser Sunda Islands, Borneo.

Local names
Borneo: Jambu anum.