Archidendron triplinervium (Kosterm.) Nielsen, Opera Bot. 76 (1984)
Latin for 'tripli-veined', referring to the leaflet venation.
Abarema triplinervia Kosterm.
Pithecellobium triplinervium (Kosterm.) Cockb.
Tree (or shrub), 4.5-10(-26) m high; bole to 14 m high, 40 cm in diameter. Branchlets terete or
c. angular in the distal part, yellowish grey to light brown, glabrous. Leaves: rachis 1.5-7.5 cm, glabrous,
gland broadly to narrowly elliptic, flat or slightly cushion-shaped, often c. raised, 2-9 mm;
pinnae 1 pair, 3.5-13.5 cm, glabrous; petiolules 2-7 mm, glabrous; leaflets 2 (or 3) pairs per pinna,
opposite, coriaceous or chartaceous, drying grey-green or brown, c. equal-sided, ovate-elliptic to
obovate-elliptic (or lanceolate), (4-)7.5-18 by (2.5-)4.5-8.5 cm, base symmetrically rounded or
broadly cuneate, apex obtusely acuminate-caudate, both surfaces glabrous; principal lateral veins (1-)
2-3(-4) per leaflet-half, non parallel, strongly arching, issuing from the lower half of the main
vein; reticulation lax, prominulous above, prominent beneath. Inflorescences terminal or ramiflorous
below the leaves, scarcely puberulous, glabrescent, consisting of pedunculate glomerules
aggregated into panicles, 30 by 35 cm; glomerules consisting of 2 or 3 sessile or subsessile flowers;
pedicel less than 1 mm; floral bracts ovate, obtuse or obscurely dentate, c. 1 mm, glabrous. Flowers
pentamerous, bisexual. Calyx green, cup-shaped or campanulate, (1.5-)2.4-4.5 mm, glabrous; teeth
deltoid, irregular, acute, 0.1-0.8 mm. Corolla yellowish green or white, funnel-shaped, 6-10
mm, glabrous; lobes elliptic, acute, (2.5-)3-4 mm. Stamens white, c. 25 mm, tube equalling
or shorter than the corolla-tube. Ovary solitary, glabrous. Pod red or brownish outside, reddish
orange within, curved into a circle 6-10 cm in diameter, valves 2.5-3.5 cm wide, coriaceous chartaceous,
not sinuate, glabrous, veins inconspicuous, dehiscing first along the ventral suture.
Seeds bluish black, ellipsoid, slightly flattened, c. 15 by 10 mm. [from Flora Malesiana]
Primary and secondary rain forest, seasonally inundated forest; found on riverbanks and low
and undulating terrains, occasionally on slopes and ridges; altitude 0-150 m, occasionally up to 1300 m.
A montane, shrubby ecotype from poor soil has been found in Sabah.
Rubbed young shoots mixed with water have been used against malaria. Roots used to make handles for
Borneo: Jaring, Jiring hantu, Jiring rimba, Kamonyang, Langir hantu.