Deciduous undershrub, shrub, or treelet up to 12 m and 45 cm ø. Leaves mostly obovate-oblong or (obovate-) lanceolate, rarely obovate or linear-lanceolate, 6-20(-25) by 2-7 cm, mostly acuminate, sometimes acute or obtuse at apex, mostly acute, sometimes obtuse at base, margin finely denticulate; Stipules 5-8 by 2-3 mm. Inflorescences compound, many-flowered; Sepals 5, ovate to ovate-oblong, 10-16 by 4-9 mm. Petals 5-6(-10), obovate, 15-25 by 8-15 mm, tapering at base or subunguiculate. Stamens (25-)30-60(-75); Ovaries 6-10(-15), 0.7-1.1 by 0.5-0.7 mm; Fruits mostly 2-3, up to 11 by 8 mm.
Andaman: present Asia-Temperate:, Hainan (Hainan ‒ present) Asia-Tropical:, Cambodia (Cambodia ‒ present); Laos (Laos ‒ present); Malaya (Peninsular Malaysia ‒ present); Thailand (Thailand ‒ present); Vietnam (Vietnam ‒ present) Burma: present E. Pakistan: present Kedah: present Langkawi Is: present NE. India: present Nicobar Is: present Peninsular Thailand: present Perlis: present
NE. India, E. Pakistan, Burma, Andaman and Nicobar Is., Thailand, Laos, Cambodia, Vietnam, Hainan, in Malesia: Malay Peninsula (Peninsular Thailand, Perlis, Kedah, Langkawi Is.).
The bark tastes bitter and yields a digestive tonic (Cochinchina). The wood is recorded as used for huts in the Andamans.
KURZ - in J. As. Soc. Beng. 1871: err. in syn. Gomphia sumatrana JACK
KING - in J. As. Soc. Beng. 1893: 233
BURK. - in Dict. 1935: 1569
CRAIB - in Fl. Siam. En. 1931: 244
KING - in J. As. Soc. Beng. 1893: 231
MERR. - in Fl. Thail. 1970: 25
RIDL. - in J. Str. Br. R. As. Soc. 1911: 83
RIDL. - in Fl. Mal. Pen. 1922: 365
BURK., Kew Bull. 1935: 318
KANIS - in Blumea. 1968: 36