Helicia attenuata (Jack) Blume, Ann. Sci. Nat., Bot. II, 1: 216 (1834)

Name meaning 'narrowed'.

Synonyms
Finschia sumatrana Miq. ex Boerl.
Helicia bennettiana Miq.
Helicia kingiana (non Prain) Merr.
Helicia lanceolata (non K. & V.) Bak. f.
Helicia oblongifolia Benn. in Benn. & Br.
Helicia oblongifolia var. subpetiolata Miq.
Helicia obovata Benn. in Benn. & Br.
Helicia obovata var. minor Meisn.
Helicia obovata var. connata K. & V.
Helicia suffruticosa Ridl.
Helicia sumatrana Miq.
Roupala attenuata Jack
Roupala moluccana (non R.Br., nec Jack) Roxb. [Nomen nudem]
Roupala racemosa Roxb. ex Meisn.

Description
Shrub (l-)3-5 m, or small tree, rarely up to 20 m; branchlets light brown, glabrous. Leaves oblong or elliptic-oblong, rarely oblanceolate or obovate, gradually narrowed towards the apex, mostly subacute, attenuate and decurrent into the petiole, subacute or obtuse at the very base, rarely subcordate, firmly chartaceous to subcoriaceous, greenish- or yellowish-brownish when dry, entire or remotely denticulate, or repand-serrate in the upper half, 9-25(-30) by 3-8(-ll-17) cm; midrib prominent on both faces, nerves 7-9(-10) pairs curved-ascending, distinctly anastomosing before the margin, slightly raised or sometimes somewhat impressed above, prominent beneath, reticulations rather dense, slightly raised on both faces; petiole 2-8(-10) mm, thickened and rugose at the base. Racemes solitary, axillary or ramifiorous, dense flowered nearly to the base, 12-25(-30) cm; rhachis glabrous or nearly so, terete, (1.5-)2-3 mm diam. (blue when fresh as are the pedicels), often greenish when dry. Bracts subulate, minute, up to 1 mm. Pedicels mostly in pairs, connate up to 1/3, rather robust, glabrous or nearly so, 4-5(-6) mm. Perianth whitish or cream or greenish, sometimes rose-tinged, with a rather unpleasant, sweet smell, (18-)22-25(-28) mm, glabrous, tube ~0.5 mm diam., limb ellipsoid c. l.5 mm diam. Anthers c. 2.5 mm. Disk glands subtruncate, nearly entirely connate in a crenulate ring. Ovary narrow ovoid, glabrous; style filiform. Fruit broadly ellipsoid or ovoid, oblique, shortly apiculate, manifestly attenuate at the base or contracted into a short stipe, mostly with 6 distinct, obtuse vertical ribs, first bluish-green, finally purplishblack, 3-4(-5) by 2-3 cm, pericarp leathery, c. 2 mm; pedicel 4-5 by 2.5 mm. [Flora Malesiana]

Ecology
In primary and secondary rain-forest, mainly in the montane zone 650-1700 m, but descending to the lowland and ascending up to 2650 m; by streams, on hill slopes or mountain ridges, on various soils, rather common.

Uses
Wood whitish to light brown, locally used in house-building, but not very durable if exposed to all sorts of weathers.

Distribution
Peninsular Thailand to Malaysia, Sumatra, Malay Peninsula, Borneo, Java and Bali.

Local names
Borneo: Katjang, Dyak, Murung, Ringin.
Java: Kendung, Kaju batu, Pasang tjebon; Ki geuntul.
Malay Peninsula: Putat talang, Kani batu, Puteh buaya, Rambai hutan, Dada, Kura, Golang paya, Gurang bukit.
Sumatra: Kaja pinang, Karo Batak, Serantie, Kaju si holip, Kaju sulim, Kaju darudung, Kaju si hondum, Kaju hahondung, Asahan.