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Abstract

The new combinationMonocarpia maingayi (Hook.f. & Thomson) I.M.Turner (Annonaceae), based onCyathocalyx maingayi Hook.f. & Thomson, is proposed and a lectotype is designated.Monocarpia maingayi is native to the Malay Peninsula and Sumatra. It has previously been referred to asMonocarpia marginalis (Scheff.) J.Sinclair. Differences betweenMonocarpia maingayi andM. kalimantanensis P.J.A.Kessler of Borneo are highlighted. Four species ofMonocarpia are recognised, and a key to them is presented.