Pollen morphology of the genus Begonia in Africa

R.G. van den Berg

    Research output: Thesisinternal PhD, WU

    Abstract

    <p/>The morphology of the pollen grains of African <em>Begonias</em> is described, leading to the recognition of 15 pollen types. These pollen types are assumed to constitute natural units produced by evolution and the main purpose of this study has been to reconstruct the course of evolution and to apply the resulting insights to the various taxonomical problems. It has been attempted to formulate a critical approach to the problem of applying pollen-morphological data to phylogenetic reconstruction. The evidence from pollen morphology is compared with that from other disciplines, viz. seed morphology, the study of placentation types, karyology and, especially, macromorphological taxonomy. The relation between pollen morphology and geographical distribution is discussed, while the pollen morphology of Madagascan <em>Begonias</em> as well as of the allegedly related family of the <em>Datiscaceae</em> is also investigated.
    Original languageEnglish
    QualificationDoctor of Philosophy
    Awarding Institution
    Supervisors/Advisors
    • van der Maesen, L.J.G., Promotor
    • Punt, W., Co-promotor, External person
    Award date19 Apr 1985
    Place of PublicationWageningen
    Publisher
    Publication statusPublished - 1985

    Keywords

    • begoniaceae
    • pollen
    • africa

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