| Abstract: | A group of seven Polyalthia species from Borneo allied to P. cauliflora Hook. f. & Thomson is revised. Three of these are described as new. Polyalthia myristica sp. nov. and P. trochilia sp. nov. are similar to P. stenopetala (Hook. f. & Thomson) Finet & Gagnep., particularly in having seeds with a deep circumferential groove. Polyalthia kinabaluensis sp. nov., endemic to Mount Kinabalu, is similar to P. cauliflora, but differs in having petals slightly connate at the base and larger monocarps. Polyalthia ichthyosma sp. nov. is the fourth new species described. It bears some similarity to one of the P. cauliflora group, P. dictyoneura Diels, but differs in not being cauliflorous. Two synonyms of Polyalthia cauliflora, Unona desmantha Hook. f. & Thomson and Unona pycnantha Hook. f. & Thomson, are lectotypified. |
