Kayea ferruginea is a species of flowering plant belonging to Calophyllaceae family.Stephens, P.F. (2001 onwards). Angiosperm Phylogeny Website. Version 9, June 2008. http://www.mobot.org/MOBOT/Research/APweb/ It is a free native to southern Indochina (Cambodia, Thailand, and Vietnam), Peninsular Malaysia, Singapore, and Borneo. It grows in lowland tropical moist forests, typically along streams at low elevations.
The local or common name has been said to be Sembawang tree in a paper. Thus, giving the area of Sembawang its name.Ridley, H. N. and Curtis, C., (1897) Article in the Journal of the Malayan Branch of the Royal Asiatic Society No. 30
It grows 8 to 12 metres tall. The fruits are 6 cm across, enveloped in four loose leathery fleshy sepals. Flowers found in short, axillary panicles and leaves are elliptic of 8 x 3 to 12 x 4.5 cm size.
In Peninsular Malaysia the species has been recorded in Eastern Johore, Sungei Endau southwards, Pahang, Ayer Etam, Kelantan, Temangan.Ridley, H. N. (1922) Kayea ferruginea Pierre in Flora (1) and Tree flora of Malaya Vol. 2 (1973) For department of Ministry of primary industries, Malaysia page no.230
The species was described by Jean Baptiste Louis Pierre in 1885.
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