This paper deals with the names and typication of the 34 species recognizedin Malesia. Specimens important for the knowledge of the distributionof each species have been cited with their locality. Indexes to names andto all examined specimens are given. Ten new species are described:Castanopsis clemensii, densinervia, endertii, microphylla" oligoneura,oviformis, paucispina, peduneulata, psilophylla, all from Borneo, andjohorensis from Malaya. C. hypophoenieea and C. lucida are new combi-nations

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... based on Quercus hypophoenieea v. Seem, and Alseodaphne lucidaNees in Wall, respectively. Castanopsis ebneri and woodii are reducedto evansii, hullettii to lucida, pachycarpa to rhamnifolia, conspersispina,to tungurrut, dispersispina to hypophoenieea, ridleyi partly to tungurrutand partly to megacarpa, kinabaluensis to foxworthyi, pearsonii to mott-leyana, junghuhnii and schlenkerae to acuniinatissima. Castanopsisselangorensis A. Cam. is regarded as a doubtful species. The number ofendemic species is for Malaya 5, Borneo 11, the Philippines 1; the totalnumber of species, is for Sumatra 11, Malaya 17, Java 4, Borneo 20,the Philippines 4, Celebes 2, the Moluccas 1, New Guinea 1, the LesserSunda Islands none.