Calophyllum teysmannii Miq., Fl. Ned. Ind., Eerste Bijv. 499 (1861)

Named after J.E. Teysmann [1808-1882], a Dutch gardener who became in charge of horticulture at Bogor Botanical Garden [1831-1869] and collected many plants in Indonesia.

Calophyllum inophylloide var. singapurense M.R.Hend. & Wyatt-Sm.
Calophyllum intramarginale M.R.Hend. & Wyatt-Sm.
Calophyllum miquelii Vesque [Illegitimate]

This is a small to big tree, up to 33 m tall. The bole has short spreading buttresses and usually with stilt roots. The bark is brown to grey-brown with rough, narrow and shallow fissures. When cut, there is copious, clear yellow or yellow-brown, non sticky exudate that turns opaque. The obovate leaf shape is distinct with a notch at the apex. Leaf margine is thickened and of lighter colour (especially when dried). The flower has 4 or 0 petals and the fruit is ovoid-globose, relatively smooth when dry. [from The DNA of Singapore]

Found in peat swamp, flat-lying mixed dipterocarp forests, kerangas vegetation and on ridges of lower montane rainforests up to 1220 m elevation.

Hard timber that is used in construction.

Peninsular Malaysia and Borneo.

Local names
Malay/Indonesian: Yakang, bintangor batu.