Browsing Research Articles (Plant Science) by UP Author "Van Wyk, Abraham Erasmus (Braam)"

Browsing Research Articles (Plant Science) by UP Author "Van Wyk, Abraham Erasmus (Braam)"

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  • The Acacia controversy resulting from minority rule at the Vienna Nomenclature Section : much more than arcane arguments and complex technicalities 
    Moore, Gerry; Smith, G.F. (Gideon Francois), 1959-; Figueiredo, Estrela; Demissew, Sebsebe; Lewis, G.P. (Gwilym Peter); Schrire, Brian D.; Rico, Lourdes; Van Wyk, Abraham Erasmus (Braam); Luckow, Melissa; Kiesling, Roberto; Mario, Sousa S. (International Association for Plant Taxonomy, 2011-06)
    The arguments towards resolving the Acacia nomenclatural controversy put forth by Thiele & al. (2011) are reviewed and rebutted. We argue that a truly pragmatic and, moreover, defensible and equitable alternative to ...
  • Acacia, the 2011 Nomenclature Section in Melbourne, and beyond 
    Moore, Gerry; Smith, G.F. (Gideon Francois), 1959-; Figueiredo, Estrela; Demissew, Sebsebe; Lewis, G.P. (Gwilym Peter); Schrire, Brian D.; Rico, Lourdes; Van Wyk, Abraham Erasmus (Braam) (International Association for Plant Taxonomy, 2010-08)
    This paper briefly reports on the developments surrounding the Acacia name conservation controversy since the Nomenclature Section meeting at the Seventeenth International Botanical Congress at Vienna in 2005. Actions taken ...
  • The bryofloristic elements of Southern Africa 
    Van Rooy, Jacques; Van Wyk, Abraham Erasmus (Braam) (Manley, 2011-03)
    A TWINSPAN classification divides the moss flora of southern Africa (South Africa, Namibia, Botswana, Swaziland, and Lesotho) into two main bryofloristic elements: (1) the Xerophytic (south-western) element mainly distributed ...
  • The bryofloristic regions of southern Africa 
    Van Rooy, Jacques; Van Wyk, Abraham Erasmus (Braam) (Maney, 2010)
    A TWINSPAN classification divides southern Africa (South Africa, Namibia, Botswana, Swaziland and Lesotho) into two main bryofloristic regions: (1) a subtropical or palaeotropical region in the northern, eastern and southern ...
  • Calvatia Fr. (Fungi, Lycoperdaceae) in suider-Afrika : 50 jaar na Bottomley 
    Coetzee, J.C. (Johannes C.); Van Wyk, Abraham Erasmus (Braam) (AOSIS Open Journals, 2013)
    A taxonomic revision of the Calvatia complex in southern Africa, following a comparative morphological approach, has led to the adoption of a broad generic concept comprising thirteen species. Conservation of Calvatia ...
  • Chemosystematic evaluation of Aloe section Pictae (Asphodelaceae) 
    Grace, Olwen Megan; Simmonds, Monique S.J.; Smith, G.F. (Gideon Francois), 1959-; Van Wyk, Abraham Erasmus (Braam) (Elsevier, 2010-02)
    The chemosystematic value of UV-absorbing leaf constituents was considered in previously uncharacterised representatives of Aloe section Pictae, the problematic maculate species complex. Comparative data indicate that the ...
  • A conspectus of Combretum (Combretaceae) in southern Africa, with taxonomic and nomenclatural notes on species and sections 
    Jordaan, Marie; Van Wyk, Abraham Erasmus (Braam); Maurin, O. (National Botanical Institute, 2011-05)
    Two subgenera of Combretum Loefl. occur in the Flora of southern Africa (FSA) region. Previous sectional classifications were assessed in view of molecular evidence and accordingly modified. Ten sections in subgen. ...
  • The correct author citation for Helictotrichon (Pooideae: Aveneae) 
    Mashau, A.C.; Fish, Lyn; Van Wyk, Abraham Erasmus (Braam) (National Botanical Institute, 2010)
    The purpose of this note is to clarify the confusion in the literature regarding the author citation for the generic name Helictotrichon.
  • The correct name of Aloe plicatilis, the fan aloe, in the genus Kumara (Asphodelaceae: Alooideae), again 
    Klopper, Ronell Renett; Smith, G.F. (Gideon Francois), 1959-; Van Wyk, Abraham Erasmus (Braam) (British Cactus and Succulent Society, 2013)
    The combination Kumara plicatilis (L.) Klopper & Gideon F.Sm. recently published for the fan aloe [Aloe plicatilis (L.) Burm.f.], is a synonym of Kumara plicatilis (L.) G.D.Rowley, the latter having priority due to ...
  • The correct names for species of aloe sect. Chortolirion (Asphodelaceae: Alooideae) 
    Klopper, Ronell Renett; Smith, G.F. (Gideon Francois), 1959-; Figueiredo, Estrela; Grace, Olwen Megan; Van Wyk, Abraham Erasmus (Braam); Moore, Gerry; Lendemer, James; Tripp, Erin (International Association for Plant Taxonomy, 2013-12)
    The correct names and synonymy for species of Aloe sect. Chortolirion (A. Berger) Boatwr. & J.C. Manning (Asphodelaceae: Alooideae) are provided. This treatment recognises four species in this section, namely A. welwitschii, ...
  • Creating an online world flora by 2020 : a perspective from South Africa 
    Victor, Janine Elizabeth; Smith, G.F. (Gideon Francois), 1959-; Turland, Nicholas J.; Le Roux, Mariaan; Paton, Alan; Figueiredo, Estrela; Crouch, Neil R.; Van Wyk, Abraham Erasmus (Braam); Filer, Denis; Van Wyk, Erich (Springer, 2014-01)
    At the 10th Conference of the Parties of the Convention on Biodiversity (CBD), which was held in Nagoya, Japan, in October 2010, an updated Global Strategy for Plant Conservation (GSPC) was adopted as part of the plan of ...
  • Diversity and biogeographical patterns of legumes (Leguminosae) indigenous to southern Africa 
    Trytsman, Marike; Westfall, Robert H.; Breytenbach, Philippus J.J.; Calitz, Frikkie J.; Van Wyk, Abraham Erasmus (Braam) (Pensoft Publishers, 2016-10-04)
    The principal aim of this study was to establish biogeographical patterns in the legume flora of southern Africa so as to facilitate the selection of species with agricultural potential. Plant collection data from ...
  • Endophytic bacteria in toxic South African plants : identification, phylogeny and possible involvement in gousiekte 
    Verstraete, Brecht; Van Elst, Daan; Steyn, Hester Maria; Van Wyk, Abraham Erasmus (Braam); Lemaire, Benny; Smets, Erik; Dessein, Steven; Webber, Mark Alexander (Public Library of Science, 2011-04)
    BACKGROUND: South African plant species of the genera Fadogia, Pavetta and Vangueria (all belonging to Rubiaceae) are known to cause gousiekte (literally ‘quick disease’), a fatal cardiotoxicosis of ruminants characterised ...
  • The epidermal cell structure of the secondary pollen presenter in Vangueria infausta (Rubiaceae: Vanguerieae) suggests a functional association with protruding Onci in pollen grains 
    Tilney, Patricia May; Van Wyk, Abraham Erasmus (Braam); Van der Merwe, Christiaan F.; Wang, Tai (Public Library of Science, 2014-05-07)
    Secondary pollen presentation is a well-known phenomenon in the Rubiaceae with particularly conspicuous pollen presenters occurring in the tribe Vanguerieae. These knob-like structures are formed by a modification of the ...
  • Evolutionary history and leaf succulence as explanations for medicinal use in aloes and the global popularity of Aloe vera 
    Grace, Olwen Megan; Buerki, Sven; Symonds, Michael E.; Forest, Felix; Van Wyk, Abraham Erasmus (Braam); Smith, G.F. (Gideon Francois), 1959-; Klopper, Ronell Renett; Bjorå, Charlotte S.; Neale, Sophie; Demissew, Sebsebe; Simmonds, Monique S.J.; Rønsted, Nina (BioMed Central, 2015-02)
    BACKGROUND : Aloe vera supports a substantial global trade yet its wild origins, and explanations for its popularity over 500 related Aloe species in one of the world’s largest succulent groups, have remained uncertain. ...
  • Fabaceae : taxonomic status of Elephantorrhiza Rangei (Mimosoideae) 
    Grobler, A.; Van Wyk, Abraham Erasmus (Braam) (National Botanical Institute, 2010)
    E1ephanlorrhiza rangei was first described by Harms (1913) from a specimen, Range 455, collected in January 1908 at Naute in the Keetmanshoop District, southern Namibia.
  • Generic status of Quisqualis (Combretaceae), with notes on the taxonomy and distribution of Q. parviflora 
    Jordaan, Marie; Van Wyk, Abraham Erasmus (Braam); Maurin, O. (National Botanical Institute, 2011)
    The taxonomic status of Quisqualis L., a genus closely related to and sometimes considered congeneric with Combretum Loefl., is discussed. The genus Quisqualis is maintained to accommodate selected African, Indian, Asian ...
  • The genus Calvatia ('Gasteromycetes', Lycoperdaceae) : a review of its ethnomycology and biotechnological potential 
    Coetzee, J.C. (Johannes C.); Van Wyk, Abraham Erasmus (Braam) (Academic Journals, 2009-11-16)
    Several members of the fungal puffball genus Calvatia Fr. have found widespread use amongst various cultures world-wide, especially as sources of food and/or traditional medicine. Hitherto the biotechnological potential ...
  • Gymnosporia swazica (Celastraceae), a new species from southern Africa 
    Jordaan, Marie; Van Wyk, Abraham Erasmus (Braam) (Magnolia Press (Open Access), 2015-01)
    Gymnosporia swazica, a new restricted-range southern African species, is described and illustrated here. Known from only a few localities in Swaziland and bordering parts of South Africa (Mpumalanga and northeastern ...
  • History and drivers of plant taxonomy in South Africa 
    Victor, Janine Elizabeth; Smith, G.F. (Gideon Francois), 1959-; Van Wyk, Abraham Erasmus (Braam) (Magnolia Press, 2016-08-06)
    The development of plant taxonomy in South Africa from about 1600 to 2015 is reviewed, with emphasis on the main driving factors that have influenced the research direction, techniques used, and choice of taxonomic research ...