Chisocheton patens Blume, Bijdr. (1825)

Synonyms
Chisocheton apoensis Elmer ex Merr.
Chisocheton barbatus C.DC.
Chisocheton divergens Blume
Chisocheton divergens var. genuinus Valet.
Chisocheton divergens var. minor Valet.
Chisocheton divergens var. robustus Valet.
Chisocheton fragrans Hiern in Hook.f.
Chisocheton fulvus Merr.
Chisocheton glomeratus Hiern in Hook.f.
Chisocheton holocalyx Hiern in Hook.f.
Chisocheton kanehirai Sasaki
Chisocheton laxiflorus King
Chisocheton tetrapetalus (Turcz.) C.DC. in DC.
Chisocheton urdanetensis Elmer ex Merr.
Chisocheton vrieseanus C.DC. in DC.
Dysoxylum kanehirai (Sasaki) Kaneh. & Hatus.
Melia pendula Reinw. ex Miq.
Schizochiton divergens (Blume) Spreng.
Schizochiton patens (Blume) Spreng.
Schizochiton tetrapetalum Turcz.
Trichilia hexandra Blume ex Miq.
Trichilia longissima Wall.

Diagnostics
Upper canopy tree up to 43 m tall and 73 cm dbh. Stipules absent. Leaves alternate, paripinnate, not pseudogemmulate, compound, leaf tips continuing to grow indeterminately, leaflets penni-veined, up to 28 by 10.5 cm, glabrous to hairy below. Flowers ca. 5 mm diameter, white-yellow, placed in panicles. Fruits ca. 24 mm diameter, red, capsules. Seeds with aril.

Description
Tree to 43 m, but often flowering when 2-3 m tall; bole to 20 m and 73 cm diam., sometimes fluted or buttressed, buttresses to 2 m tall, 1 m out and 8 cm thick, concave. Bark pale greenish to black, smooth to faintly cracked, lenticellate, the lenticels in horizontal rows (Pennington); inner bark pale to dark brown; wood pale to dirty cream, often smelling of methyl mercaptan. Leafy shoots c. 6 mm diam., glabrous to deciduously tomentose. bark dark, cicatrices conspicuous. Leaves to 70 cm, paripinnate to pseudogemmulate, in terminal bunches; petiole 7-15 cm, glabrous to pubescent. Leaflets 6-28 by 2.5-10.5 cm, narrowly oblong to oblong- or elliptic-lanceolate, opposite to subopposite, often maturing all together, thinly coriaceous, often conspicuously paler abaxially, base c. rounded or rarely subcordate, c. unequal, shortly acuminate, adaxial surface glabrous or with tomentose midrib and pubescent veins, abaxial surface glabrous or with tomentose midrib and pubescent veins, abaxial surface glabrous to softly tawny pubescent, midrib and veins tomentose, costae 9-14 on each side, +/- prominent abaxially, tertiary venation often conspicuous; petiolules 3-6 mm. Thyrse to 90 cm, borne in upper axils or supra-axillary, pendent, paniculiform; most proximal branches to 17 cm (10 cm in females), ultimate branchlets cymules of subsessile or shortly pedicellate fragrant flowers; axes glabrous to tomentose; bracteoles minute. Calyx 2.5-3 mm, cupular to shortly tubular, puberulous, margin subentire to minutely, irregularly toothed. Petals 4, 5-10 mm long, subspathulate-elliptic, glabrous to glabrescent. Staminal tube 5-7(-8) mm, glabrescent or minutely pubescent near mouth without, pubescent, tomentellous or very rarely villous within, margin with (5-)6-8 linear-triangular lobes a little shorter than anthers; anthers (5-)6 or 7(-8), basifixed, glabrous, locellate. Disk absent or very short, fleshy, glabrous, +/- lobed. Ovary pubescent; style glabrous to densely short pubescent; stylehead cylindric to clavate. Capsule to 5 cm long, 4.5 cm diam., subglobose, stipilate, glabrous to tomentose (especially when unripe), 2-locular; stipe to 2 cm. Seeds 2, 5-11 mm long, to 8 mm wide, scutiform, half covered by an aril. [from Flora Malesiana]

Ecology
In undisturbed mixed dipterocarp forests up to 500 m altitude, however, seems to prefer open places. On hillsides and ridges, but also common along rivers. On sandy to clay soils, but also on limestone.

Uses
The wood is locally used in house building.

Distribution
Peninsular Thailand, Peninsular Malaysia, Sumatra, Java, Borneo, Philippines, Celebes.

Local names
Borneo: Lamboi, Lantupak, Latupak.