Diospyros lateralis Hiern., Trans. Cambr. Phil. Soc. 12, 2 (1873)

Synonyms
Diospyros crassipes Bakh.

Diagnostics
Understorey tree up to 18 m tall and 22 cm dbh. Stipules absent. Leaves alternate, simple, penni-veined, glabrous. Flowers ca. 3 mm in diameter, white, with corolla tube, placed in small bundles on the twigs. Fruit ca. 25 mm long, green, fleshy berry.

Description
Tree to 18 m tall and 22 cm diameter. Twigs glabrous. Leaves chartaceous, glabrous; oblong-elliptic, 9.5-12 x 3.2-4.6 cm, base cuneate, apex acuminate; midrib sunken above; lateral veins prominent below, 4-6 pairs, arching and diminishing toward leaf margin; intercostal venation prominulous, closely scalariform and running at right angles to midrib; petiole 0.2-0.8 cm long. Male inflorescence 0.5-1 cm long, each bearing c. 3 flowers. Male flowers with calyx deeply cup-shaped, divided at top into 5 small triangular teeth. Female inflorescences and flowers unknown. Fruits solitary, subsessile (stalks 0.1-0.2 cm long), globose to depressed ovoid, to c. 2.6 cm diameter, when dry vertically ribbed according to the number of seeds contained within, woody. Fruit calyx accrescent, rugose, woody, forming a shallow cup with 5 teeth around the rim. [from Tree Flora of Sabah and Sarawak]

Ecology
In undisturbed forests up to 20 m altitude. Mostly on sandy ridges.

Distribution
Thailand, Sumatra, Borneo.

Local names
Borneo: Kayu arang.