Glenniea penangensis (Ridl.) Leenh.

Tree up to 36 m high, dbh up to 70 cm; monoecious. Hairs mainly solitary. Twigs 3.5-6 mm in diam., at first canaliculate, later smooth or finely striate, dark purplish or reddish brown, fulvous-puberulous and with many minute light lenticels. Leaves mainly spirally arranged (to (sub)decus-sate), 2-4-jugate; petiole 4-14 cm long, usually strongly flattened above; petiolules 0.5-1 (-2) cm long, usually with a broad flat groove above. Leaflets opposite (to alternate), 7-18 by 3-11 cm, index 1.5-2.5, stiff-chartaceous to subcoriaceous, (sub)glabrous; base often ± oblique, (obtuse to) rounded (to truncate), attenuate; apex emarginate to broadly and obtusely acuminate; midrib prominulous above, towards the base slightly sunken; nerves 1.5-2.5 cm apart, slightly curved, prominulous above, prominent beneath; intersecondary nerves hardly developed. Inflorescences thyrsoid, 15-20 cm long, fulvous-velutinous to tomentose; cymules crowded, glomerulous, sessile, several-flowered; pedicels 2-3 mm long; bracts and bracteoles triangular, up to 1 mm long. Sepals 4, valvate, c. 1.5 by 2 mm, inside subtomentose. Disc with a few scattered hairs. Stamens 6 or 7; filaments c. 3 mm long; anthers broad-ovate, c. 0.9 mm long, dehiscence latrorse. Ovary flattened ovoid, c. 2.5 mm high, tapering into the sturdy, c. 1.5 mm long style; stigma c. 0.75 mm long, grooved. Infructescences subtomentose, the axes and especially the pedicels much thickened, the latter c. 5 mm long. Fruits few, faintly didymous or (if only 1 seed developed) subglobular to ellipsoid, up to 9 by 7 cm, brown, scurfy, at first tufted-puberulous, finally glabrous, pericarp when dried 0.5-1 cm thick, hard, very fibrous (when fresh mealy and yellow), endocarp tough, glabrous inside, as far as could be ascertained. Seeds probably subglobular, 4-4.5 cm in diam., testa brown, smooth, glabrous.

A tropical plant. It grows in lowland and hill forests up to 900 m above sea level.