Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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    Systematics, evolution and historical biogeography of the family Ochnaceae with emphasis on the genus Campylospermum
    Bissiengou, P. - \ 2014
    Wageningen University. Promotor(en): Marc Sosef, co-promotor(en): Lars Chatrou; L. Ngok Banak. - Wageningen : Wageningen University - ISBN 9789462572225 - 357
    ochnaceae - biosystematiek - taxonomie - evolutie - biogeografie - plantengeografie - fylogenie - taxonomische revisies - fylogenetica - ochnaceae - biosystematics - taxonomy - evolution - biogeography - phytogeography - phylogeny - taxonomic revisions - phylogenetics


    Ochnaceae s.l. is a family of trees, shrubs or rarely herbs widely distributed in tropical and subtropical forests and savannas of the Old and New World, and has about 500 species in 32 genera. The family is divided into three subfamilies: Medusagynoideae, Quiinoideae and Ochnoideae. We have provided, for the first time, a nearly complete molecular phylogenetic analysis of Ochnaceae s.l. resolving most of the phylogeny backbone of the family using five DNA regions. Based on this, dating analyses were performed using a secondary calibration, and relaxed molecular clock models. The historical biogeography of Ochnaceae s.l. was reconstructed using Dispersal-Vicariance Analysis and Bayesian Binary MCMC. The Neotropics were inferred as being the geographical origin of the family and the Old World was most likely colonized via the North Atlantic Land Bridge during a period when climatic conditions allowed establishment of a boreotropical flora. A full taxonomic revision of the continental African species of the genus Campylospermum has been prepared and additional historical biogeographic analyses were performed with a focus on the genus Campylospermum.

    Revealing the secrets of African annonaceae : systematics, evolution and biogeography of the syncarpous genera Isolona and Monodora
    Couvreur, T.L.P. - \ 2008
    Wageningen University. Promotor(en): Marc Sosef, co-promotor(en): J.E. Richardson; Lars Chatrou. - [S.l.] : S.n. - ISBN 9789085049241 - 296
    annonaceae - isolona - monodora - evolutie - taxonomie - plantengeografie - biogeografie - klassen - moleculaire taxonomie - taxonomische revisies - soorten - determinatietabellen - identificatie - afrika - annonaceae - isolona - monodora - evolution - taxonomy - phytogeography - biogeography - genera - molecular taxonomy - taxonomic revisions - species - keys - identification - africa
    The goal of this PhD project was to study the evolution, systematics and biogeography of two African genera from the pan-tropical Annonaceae family: Isolona and Monodora. Both genera are unique within the family in that the female reproductive parts (or carpels) are fused into a single unit. All other Annonaceae have freely arranged carpels. We investigated the phylogenetic relationships of Isolona and Monodora at the intra-familial and intra-generic levels.
    In Chapter 2, we explore the influence of priors when using the novel Bayesian based posterior mapping to study the evolution of morphological characters. Up to now, it was unclear if these priors had any influence on the results. Using a family level molecular phylogeny of the Annonaceae, we study the evolution of two morphological characters under different prior values. We show that different prior values will return different results. Thus, inadequate prior values can lead to erroneous conclusions over the evolution of the studied morphological characters. We also indicate a practical way to choose the prior values when using the posterior mapping approach to study morphological character evolution.
    In Chapter 3, using the posterior mapping approach, we study the evolutionary origins of syncarpy in Annonaceae. The closest relatives of Isolona and Monodora are elucidated. We generate a well resolved phylogeny which included for the first time the majority of African Annonaceae genera. We also study additional morphological and palynological characters relevant to Annonaceae classification in general. Our phylogenetic analyses recover a fully resolved clade comprising twelve endemic African genera, including Isolona and Monodora, which was nested within the so-called long-branch clade. This is the largest and most species-rich clade of African genera identified to date within Annonaceae. Our results indicate that syncarpy arose by fusion of a moderate number of carpels. The alternative hypothesis that syncarpy arose by multiplication of an initial single carpel receives no support.
    In Chapter 4 we use African Annonaceae as a model family to study the biogeographical aspects of the evolutionary origins of African rain forests. It is generally thought that the large West-Central rain forest blocks was continuous during the Eocene with the now fragmented and smaller forests of East Africa, explaining the strong floristic affinities between both areas. Using dated molecular phylogenies we provide evidence of the recurring break-up and reconnection of this pan-African rain forest during the Oligocene and Miocene. The reconnections allowed for biotic exchange while the break-ups induced speciation enhancing the levels of endemicity, thus providing an explanation for present-day patterns in the distribution and diversity of plants in African rain forests.
    In Chapter 5, we perform a detailed analysis of pollen morphology within a strongly supported monophyletic group of five African genera, including Isolona and Monodora. We specifically assess if pollen characters are useful for classification purposes within Isolona and Monodora using a species-level molecular phylogeny. The results show a wide pollen morphological diversity. The pollen types defined within Isolona and Monodora provide little taxonomic information for major clades within both genera. However, pollen variation proves useful as a support of phylogenetic relatedness between groups of closely related species.
    Finally in Chapter 6, a monographic revision of both Isolona and Monodora is presented. Isolona consists of 20 species with five endemic to Madagascar and one newly described species. Monodora has a total of 14 species, three of which were described during this PhD project from Tanzania. Detailed descriptions as well as keys are provided. The conservation status of each species is assessed following the IUCN recommendations. Just under half of the total number of species from both genera is assigned to some level of threat (12 species or 60% in Isolona and four species or 28% in Monodora).
    Contribution to the biosystematics of Celtis L. (Celtidaceae) with special emphasis on the African species
    Sattarian, A. - \ 2006
    Wageningen University. Promotor(en): Jos van der Maesen, co-promotor(en): Freek Bakker. - [S.l. ] : S.n. - ISBN 9789085044451 - 142
    celtis - ulmaceae - biosystematiek - soorten - taxonomie - plantenmorfologie - fylogenie - taxonomische revisies - biologische naamgeving - moleculaire taxonomie - afrika - celtis - ulmaceae - biosystematics - species - taxonomy - plant morphology - phylogeny - taxonomic revisions - biological nomenclature - molecular taxonomy - africa
    CeltisL. (Celtidaceae, earlier part of the Ulmaceae) is a genus mainly of tree species, which has its natural distribution in Africa, the Mediterranean region, Asia, North and South America, and northernAustralia. Outside this natural distribution various species are planted in temperate areas, but they occur in many different ecological habitats, tropical and temperate regions in all continents. Some species are ornamental; some are used for timber and reforestation.

    This thesis is focused on African Celtis with general objectives such as providing a phylogeny of the Celtidaceae, understanding the relationships of African Celtis , preparation of a revision of the African Celtis species, a study of the main morphological characters, and a conspectus containing all names and synonyms in the genus.

    This thesis provided results, such as: Ulmaceae s.l. is not monophyletic and we confirm that this family has to be split into two families, Ulmaceaes.s. and Celtidaceae; the Celtidaceae should merge with Cannabaceae; in general Celtis is monophyletic but for more support we need to add more markers and taxa. In the relationships of Celtis , a few clades can be seen especially for South American species, which have thorns and by this morphological character that clade is distinguished from the rest of the genus Celtis. African and Asian Celtis form a mixed clade, this clade could havebeeninfluenced by the dispersal of these species.

    In total 12 African Celtis are identified in Africa andMadagascar: Celtis adolfi-friderici, C. africana , C.australis, C. mildbraedii, C. gomphophylla, C. prantlii, C. tessmannii, C. toka, C. wightii, and C. zenkeri. OnMadagascarthere are two endemic species: C. bifida and the newly described species Celtis malagasica . ForAustraliaa new species was separated from the " Celtis philippensis complex": Celtis australiensis . The main morphological characters in African Celtis instrumental for the distinction of species include leaf shape, venation, indumentum, stomata, inflorescences, flowers, pollen, fruits and their endocarps. Two pollen types could be distinguished based on the feature of the apertures, also two types of hairs are distinguished (glandular and non-glandular); stomata include three types: paracytic, cyclocytic and anisocytic; inflorescences are cymose and fruit shape are drupes, the endocarp of Celtis differs from globose ellipsoid to ovoid with different sizes, colours, and texture.

    The conspectus contains about 500 names of specific and infraspecific rank, many of which remain to be verified to complete publication and typification details. Generally for getting better relationship patterns of this genus revision of the Asian Celtis is recommended.

    Studies in Begoniaceae: VII
    Wilde, J.J.F.E. de - \ 2002
    Leiden : Backhuys (Wageningen University papers 2001-2) - 271
    begoniaceae - begonia - taxonomische revisies - taxonomie - voortplanting - geografische verdeling - plantenecologie - identificatie - determinatietabellen - plantenmorfologie - nieuwe soorten - gabon - kameroen - begoniaceae - begonia - taxonomic revisions - taxonomy - reproduction - geographical distribution - plant ecology - identification - keys - plant morphology - new species - gabon - cameroon
    Herfstanemonen, de oudjes doen het nog best
    Hop, M.E.C.M. - \ 2002
    Tuin en Landschap 24 (2002)24. - ISSN 0165-3350 - p. 12 - 14.
    anemone - rassenproeven - prestatie-onderzoek - cultivars - rassen (planten) - nomenclatuur - biologische naamgeving - taxonomie - classificatie - classificatie van rassen - taxonomische revisies - gebruikswaarde - habitus - plantenmorfologie - bloemen - bloei - sierplanten - ornamentele waarde - tuinplanten - overblijvende planten - bloeiende planten - anemone - variety trials - performance testing - cultivars - varieties - nomenclature - biological nomenclature - taxonomy - classification - variety classification - taxonomic revisions - use value - habit - plant morphology - flowers - flowering - ornamental plants - ornamental value - bedding plants - perennials - flowering plants
    Na meer dan een eeuw vermeerdering en handel in Anemone is de soortechtheid en naamgeving van veel rassen twijfelachtig geworden. Daarom is door PPO sector Bomen in Boskoop, in samenwerking met de Koninklijke Vereniging voor Boskoopse Culturen (KVBC), het handelssortiment onderzocht en beschreven. Wat de naamgeving betreft is gekozen voor een indeling in groepen gebaseerd op de bouw van de bloemen (Autumn Single Group, Autmn Elegans Group, Autumn Double Group). De waardering en beschrijving van de gekeurde cultivars, de standplaatseisen en de gevoeligheid voor ziekten en plagen
    Series of revisions of Apocynaceae XLIX, Carissa L.
    Leeuwenberg, A.J.M. ; Dilst, F.J.H. van - \ 2001
    Leiden : Backhuys (Wageningen University Papers 2001-1) - ISBN 9789057820977 - 109
    apocynaceae - taxonomische revisies - determinatietabellen - identificatie - carissa - carissa - apocynaceae - taxonomic revisions - keys - identification
    Pachypodium (Apocynaceae)
    Rapanarivo, S.H.J.V. - \ 1999
    Agricultural University. Promotor(en): L.J.G. van der Maesen; A.J.M. Leeuwenberg. - Rotterdam etc. : Balkema - ISBN 9789054104841 - 120
    pachypodium - planten - taxonomie - identificatie - determinatietabellen - plantengeografie - taxonomische revisies - madagascar - afrika - pachypodium - plants - taxonomy - identification - keys - phytogeography - taxonomic revisions - madagascar - africa

    The genus Pachypodium (Apocynaceae) comprises 23 species. Eighteen are endemic to Madagascar and five occur in continental African (Angola, Mozambique, South Africa, Swaziland and Zimbabwe). The study is based on herbarium material and living plants. The varieties P. baronii var. windsorii and P. rosulatum var. gracilius are raised to the rank of species and P. cactipes , cited as synonym of P. rosulatum by Markgraf (1976), is reinstated as a distinct species. Recently three new species have been described: P. bicolor , P. eburneum and P. inopinatum and these have been maintained.

    The key consists of an introductory part, keying out the most conspicuous life forms, and leading to the regional keys for Madagascar and for continental Southern Africa.

    Series of revisions of Apocynaceae XLVII. The genus Cerbera L
    Leeuwenberg, A.J.M. - \ 1999
    Wageningen : Wageningen Agricultural University (Wageningen Agricultural University papers 98-3) - ISBN 9789057820199 - 64
    apocynaceae - cerbera - soorten - taxonomische revisies - plantengeografie - determinatietabellen - apocynaceae - cerbera - species - taxonomic revisions - phytogeography - keys
    A revision of prioria, including Gossweilerodendron, Kingiodendron, Oxystigma, and Pterygopodium (Leguminosae-Caesalpinioideae-Detarieae) with emphasis on Africa
    Breteler, F.J. - \ 1999
    Wageningen : Wageningen Agricultural University (Wageningen Agricultural University papers 99-3) - ISBN 9789057820458 - 61
    caesalpinioideae - soorten - taxonomische revisies - identificatie - plantengeografie - habitats - determinatietabellen - afrika - azië - pacifische eilanden - caesalpinioideae - species - taxonomic revisions - identification - phytogeography - habitats - keys - africa - asia - pacific islands
    Revision of the genus Dunbaria Wight & Arn. (Leguminosae-Papilionoideae).
    Maesen, L.J.G. van der - \ 1998
    Wageningen : Wageningen Agricultural University (Wageningen Agricultural University papers 98-1) - ISBN 9789057820083 - 109
    fabaceae - papilionoideae - peulgewassen - taxonomische revisies - plantengeografie - soorten - fabaceae - papilionoideae - legumes - taxonomic revisions - phytogeography - species
    Series of Revisions of Apocynaceae XLIV. Craspidospermum Boj. ex A. DC., Gonioma E. Mey., Mascarenhasia A. DC., Petchia Livera, Plectaneia Thou., and Stephanostegia Baill.
    Leeuwenberg, A.J.M. - \ 1997
    Wageningen : Wageningen Agricultural University (Wageningen Agricultural University papers 97-2) - ISBN 9789073348769 - 124
    apocynaceae - planten - identificatie - taxonomische revisies - afrika - apocynaceae - plants - identification - taxonomic revisions - africa
    Revision of Ancylobotrys Pierre. Series of Apocynaceae XXXVII.
    Vonk, G.J.A. ; Leeuwenberg, A.J.M. ; Haegens, R.M.A.P. - \ 1994
    In: Series of revisions of Apocynaceae XXXVII, XXXVIII and pollination of Apocynaceae Wageningen : Agricultural University - ISBN 9789067543613 - 81
    apocynaceae - taxonomische revisies - bestuiving - embryozak - sporen - stuifmeel - apocynaceae - taxonomic revisions - pollination - embryo sac - spores - pollen
    A revision of Leucomphalos including Baphiastrum and Bowringia (Leguminosae-Papilionoideae).
    Breteler, F.J. - \ 1994
    In: A revision of Leucomphalos including Baphiastrum and Bowringia (Leguminosae-Papilionoideae) Wageningen : Wageningen Agricultural University (Wageningen Agricultural University papers 94-4) - ISBN 9789067543620 - p. 41 - 41.
    fabaceae - taxonomische revisies - planten - identificatie - centraal-afrika - oost-azië - fabaceae - taxonomic revisions - plants - identification - central africa - east asia
    A revision of Tabernaemontana two. The new world species and Stemmadenia
    Leeuwenberg, A.J.M. - \ 1994
    Kew, Wageningen : Royal Botanic Gardens (Series of revisions of Apocynaceae 36) - ISBN 9780947643744 - 450
    apocynaceae - identificatie - planten - taxonomische revisies - apocynaceae - identification - plants - taxonomic revisions
    The African species of Landolphia P. Beauv. (Ser. revis. Apocynaceae 34).
    Persoon, J.G.M. ; Dilst, F.J.H. van; Kuijpers, R.P. ; Leeuwenberg, A.J.M. ; Vonk, G.J.A. - \ 1992
    Wageningen : Agricultural University (Wageningen Agricultural University papers 92-2) - ISBN 9789067542340 - 232
    apocynaceae - planten - identificatie - afrika - taxonomische revisies - landolphia - apocynaceae - plants - identification - africa - taxonomic revisions - landolphia
    Strongylodon (Leguminosae-Erythrininae), a revision of the genus
    Shing-Fan Huang, - \ 1991
    Wageningen : Agricultural University (Wageningen Agricultural University papers 90-8) - ISBN 9789067541855 - 69
    fabaceae - planten - identificatie - taxonomische revisies - flora - plantengeografie - fabaceae - plants - identification - taxonomic revisions - flora - phytogeography
    A revision of Tabernaemontana: the old world species.
    Leeuwenberg, A.J.M. - \ 1991
    Kew : Royal Botanic Gardens - ISBN 9780947643300 - 205
    apocynaceae - taxonomische revisies - apocynaceae - taxonomic revisions
    A revision of Cleghornia Wight, Sindechites Oliv., and Epigynum chinense Merr. (Apocynaceae)
    Xu, Z. - \ 1988
    Wageningen : Wageningen Agricultural University (Agricultural University Wageningen papers 88-6) - ISBN 9789067541459 - 35
    apocynaceae - planten - identificatie - taxonomische revisies - apocynaceae - plants - identification - taxonomic revisions
    A revision of the tribe Ambelanieae (Apocynaceae - Plumerioideae)
    Zarucchi, J.L. - \ 1988
    Wageningen : Agricultural University Wageningen (Agricultural University Wageningen papers 87-1) - ISBN 9789067541008 - 106
    apocynaceae - planten - identificatie - taxonomische revisies - apocynaceae - plants - identification - taxonomic revisions
    Oleanders; Nerium L. and the Oleander cultivars. Series of revisions of Apocynaceae XX.
    Pagen, F.J.J. - \ 1987
    Wageningen : Agricultural University Wageningen (Agricultural University Wageningen papers 87-2) - ISBN 9789067541077 - 113
    nerium - sierplanten - taxonomie - classificatie - biologische naamgeving - taxonomische revisies - nerium - ornamental plants - taxonomy - classification - biological nomenclature - taxonomic revisions
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