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Bayer, C., Fay, M.F., De Bruijn, A.Y., Salvolainen, V., Morton, C.M., Kubitzki, K., Alverson, W.S. and Chase, M.W. (1999) Support for an Expanded Family Concept of Malvaceae within a Recircumscribed Order Malvales: A Combined Analysis of Plastid atpB and rbcL DNA Sequences. Botanical Journal of Linnaeus Society, 129, 267-303.

has been cited by the following article:

• TITLE: Foliar Epidermal and Pollen Characters of Some Species in the Genus Microcos Linn. in Nigeria

  AUTHORS: Emmanuel Oyeniyi Shokefun, Emobosa Akpo Orijemie, Abiodun Emmanuel Ayodele

  KEYWORDS: Leaf Epidermis, Pollen, Microcos, Nigeria, Taxonomy

  JOURNAL NAME: American Journal of Plant Sciences, Vol.5 No.26, December 24, 2014

  ABSTRACT: Microcos Linn. (Malvaceae s.l) is a genus made up of about 60 spp. distributed in Asia and Tropical Africa. In West Africa, 8 species have been recorded of which six species have been documented for Nigeria to occur in lowland rainforest. This study is designed to carry out preliminary foliar epidermal and pollen morphological studies with a view to advance the understanding of the taxonomic relationship between and among species in the genus using the Nigerian taxa. The foliar epidermal and pollen characters were investigated by light microscopy. The epidermises are composed of isodiametric, polygonal or irregular cells. Anticlinal walls are straight, curved or un-dulate. All taxa are hypostomatic with anisocytic, paracytic and staurocytic stomata types. The mean stomatal size varies from 13.8 × 13.5 μm in M. barombiensis to 16.0 × 18.0 μm in M. coriacea. The dense distribution of stellate trichomes on the abaxial surface of M. malacocarpa and the absence of crystals in M. oligoneura are diagnostic for these taxa. The pollen grains are small in size (10-25 μm), tricolporate with short colpi, subprolate or prolate. Mean colpi length varies from 15.7 μm in M. iodocarpa to 17.5 μm in M. malacocarpa. The ora size varies from 5.4 μm in M. barombiensis to 12.5 μm in M. malacocarpa. The ambient and ora size are significant in the delimitation of the studied taxa. The two groups obtained from epidermal and pollen characters correlate with those earlier obtained from morphological data.