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Leaf anatomical characteristics of some Pouteria Aubl. (Sapotaceae) species in Peninsular Malaysia

M. NURUL-SYAHIRAH, A. LATIFF, T. NORAINI, A. R. MOHD RUZI, Z. AHMAD FITRI, A. R. SITI KHAULAH, A. J. AMIRUL AIMAN

Abstract


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 study are to describe the leaf anatomical characteristics for delimitation of Pouteria species and to determine support to the new molecular classification. Fresh leaves samples of P. malaccensis and P. obovata were collected from Taman Paku Pakis, Universiti Kebangsaan Malaysia  and Taman Botani, Melaka, while the dry leaves samples were obtained from Herbarium Universiti Kebangsaan Malaysia and Herbarium Universiti Malaya. Findings in 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 petiole and midrib, shape and arrangement of main vascular bundles in the midrib (closed or opened), absence of medullary vascular bundles in  the midrib and petiole and also presence of trichomes in the petiole have diagnostic importance in identifying Pouteria species based on anatomical data.

Keywords


leaf anatomy, Pouteria, Sapotaceae.

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