Lophopetalum wightianum Arn., Ann. Nat. Hist. 3(16): 151 (1839)

(Named after 'R. Wight' [1796-1872], physician in India and superintendant of the botanical garden of Madras)

Lophopetalum fimbriatum Wight
Lophopetalum winkleri Loes.

Large trees up to 60 m tall and 195 cm diameter, sometimes with buttresses. Bark coarsly fissured. Leaves simple, usually opposite, sometimes alternate; petiole 0.8-2.5 cm long, terete; lamina 8-26 x 4-10 cm, elliptic-oblong, apex acute to acuminate, base rounded, margin entire, chartaceous or subcoriaceous; secondary_nerves 6-13 pairs; tertiary_nerves horizontally reticulo-percurrent. Inflorescence panicles up to 12 cm long; flower petals dull red, disk bright red. Fruit a capsule, 3-4 angled, elongated; seeds many, white, papery winged.

Emergent trees in low elevation wet evergreen forests and often found in swamps and along streams, up to 900 m.

Pakistan, India, Indochina and Southeast Asia.

The timber is used as perupuk.

Local names
Indonesia/Malaysia: Bau Langit, Keruie, Mata Ulat, Medang assam, Nasi-nasi, Perupok, Perupuk Unung, Terupuk telang.
Thailand: Deemee, Samet-thung.
Vietnam: Ba Khisa.