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Trees. Leaves spiral, penninerved. Flowers bisexual, in short racemes. Petals 4 or 5, hypogynous, narrow, coherent by their edges until full anthesis, brush-like woolly inside. Stamens 8 or 10, adnate to the lower half of each petal in pairs, the uppermost part of the filaments remaining free as are the linear-elongate anthers. Ovary superior, imperfectly 3-4-celled, with 1 (uni- or bitegmic?) ovule pendent from the top of the almost free placenta into each cell; Seed 1;


Asia-Tropical:, Borneopresent; Malaya (Peninsular Malaysiapresent); Sumatera (Sumaterapresent) Lingga Is: present Peninsular Thailand: present
Monotypic. Peninsular Thailand; in Malesia: Sumatra, Lingga Is., Malay Peninsula, and Borneo. .


BECC. - in Blumea. 1980: 160
SLEUM. - in E. & P., Nat. Pfl. Fam., ed. 2, 16b. 1935: 20