| الملخص: | A leaf anatomy study was carried out on mature leaves of six Pouteria species (Sapotaceae) from Peninsular Malaysia. They were P. firma (Miq.) Baehni, P. glabra (Ridl.) Turner, P. linggensis (Burk) Baehni, P.malaccensis (Clarke) Baehni, P. obovata (R. Br.) Baehni and P. paucinervia Erlee. The objectives of this studyare to describe the leaf anatomical characteristics for delimitation of Pouteria species and to determinesupport to the new molecular classification. Fresh leaves samples of P. malaccensis and P. obovata werecollected from Taman Paku Pakis, Universiti Kebangsaan Malaysia and Taman Botani, Melaka, while the dry leavessamples were obtained from Herbarium Universiti Kebangsaan Malaysia and Herbarium Universiti Malaya. Findingsin this study have shown that type of areolar venation, presence of hypodermal layer in the leaf lamina,presence of bilayered palisade cells in the lamina, direction and outline of leaf margin, outline of petioleand midrib, shape and arrangement of main vascular bundles in the midrib (closed or opened), absence ofmedullary vascular bundles in the midrib and petiole and also presence of trichomes in the petiole havediagnostic importance in identifying Pouteria species based on anatomical data.
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