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The species of the tree genus Pterospermum Schreb. (Malvaceae: Dombeyoideae) in Malesia are revised. Twenty-six species of Pterospermum are recognised, six of which are new (P. aureum S.K.Ganesan, P. borneense S.K.Ganesan, P. glabrum S.K.Ganesan, P. havilandii S.K.Ganesan, P. merrillianum S.K.Ganesan and P. zollingerianum S.K.Ganesan) and one (P. grewiifolium Pierre) that is a new distributional record for Malesia. Identification keys are provided. All names are typified, and detailed descriptions of all species recognised are provided. Information on habitat, uses and conservation status is given for all species.

Mangifera caesia Jack is neotypified. The following 14 names are lectotypified: Mangifera oppositifolia Roxb., Campnosperma wallichii King, Coniogeton arborescens Blume, Buchanania lucida Blume, Mangifera gracilipes Hook.f., Mangifera pentandra Hook.f., Melanochyla auriculata Hook.f., Melanochyla bracteata King, Melanochyla kunstleri King, Melanochyla maingayi Hook.f., Melanorrhoea malayana Corner, Melanorrhoea usitata Wall., Melanorrhoea woodsiana Scort. ex King & Gamble and Parishia pubescens Hook.f.