English diagnoses of the following new taxa will before long be published in Flora Malesiana, I, 5²; with the exception of C. pseudosumatranum, the Latin diagnoses are exclusively based on the typecollection. The abbreviations used are as follows: BS = Bureau of Science, Manila BW = Boswezen, Dutch New Guinea FRI = Forest Research Institute, Bogor KEP = Conservator of Forest, Kepong NGF = New Guinea Forestry, Lae PNH = Philippine National Herbarium, Manila SF = Singapore Fieldnumber.