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Browsing Plant Science by Author "Van Wyk, Abraham Erasmus (Braam)"
Now showing items 21-40 of 43
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Lemaire, Benny; Robbrecht, Elmar; Van Wyk, Abraham Erasmus (Braam); Van Oevelen, Sandra; Verstraete, Brecht; Prinsen, Els; Smets, Erik; Dessein, Steven (Springer, 2011-12)Bacterial leaf symbiosis is an intimate association between bacteria and plants in which endosymbionts are housed within leaf nodules. This phenomenon has been reported in three genera of Rubiaceae (Pavetta, Psychotria, ...
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Coetzee, J.C. (Johannes C.); Van Wyk, Abraham Erasmus (Braam) (National Botanical Institute, 2010)In her catalogue of South African Gasteromycetes, Bottomley (1948) listed nine species of Lycoperdon Pel's.: Pel's. as 'doubtful, unknown and insufficiently described'. During a recent taxonomic revision of the related ...
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Victor, Janine Elizabeth; Smith, G.F. (Gideon Francois), 1959-; Van Wyk, Abraham Erasmus (Braam) (Magnolia Press (Open Access), 2015-03)A coordinated strategy for biosystematics research that addresses the needs of end-users can improve the relevance and impact of research products. The basic types of information that taxonomists provide, common to all ...
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Micromorphology and cytology of Prototulbaghia siebertii, with notes on its taxonomic significance Vosa, C.G.; Siebert, S.J.; Van Wyk, Abraham Erasmus (Braam) (National Botanical Institute, 2011-01)Four genera of the Alliaceae are known to occur in sub-Saharan Africa, in total comprising 35 indigenous and two naturalized alien species (Table 2) (Archer 2003; Klopper et al. 2006). Tulbaghia L. is the most diverse and ...
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Phephu, Nonkululo; Van Rooy, Jaques; Van Wyk, Abraham Erasmus (Braam) (Magnolia Press (open access), 2013-03)Two taxa currently recognised in Thuidium are transferred to Pelekium to complete the relocation of monoicous species from Thuidium subg. Microthuidium to Pelekium. The new combinations are: Pelekium thomeanum (Broth.) ...
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Maurin, O.; Van Wyk, Abraham Erasmus (Braam); Jordaan, Marie; Van der Bank, Michelle (Elsevier, 2011-01)Combretum stylesii O.Maurin, Jordaan & A.E.van Wyk, a liana or slender tree with scrambling branches from the Tugela River Valley (KwaZulu-Natal), South Africa, is described. Molecular data supports its placement in ...
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Siebert, Stefan J.; Retief, Elizabeth; Van Wyk, Abraham Erasmus (Braam) (MMissouri Botanical Garden Press, 2013-10-18)Pavetta glaucophylla Retief, S. J. Siebert & A. E. van Wyk, a new species of the Rubiaceae (Ixoroideae) from South Africa, is described and illustrated. A member of Pavetta L. subg. Pavetta, it has a restricted range ...
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Coetzee, J.C. (Johannes C.); Van Wyk, Abraham Erasmus (Braam) (© 1996–2011 Mycotaxon, Ltd., 2012-07)Various nomenclatural aspects pertaining to author citations, orthography and the validity of names in the genus Calvatia, and, in one instance, Bovista, are discussed. The name Calbovista subsculpta var. fumosa is ...
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Swanepoel, Wessel; Le Roux, Mariaan; Wojciechowski, Martin F.; Van Wyk, Abraham Erasmus (Braam); Pandit, Maharaj K. (Public Library of Science, 2015-03-27)Oberholzeria etendekaensis, a succulent biennial or short-lived perennial shrublet is described as a new species, and a new monotypic genus. Discovered in 2012, it is a rare species known only from a single locality in ...
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Victor, Janine Elizabeth; Smith, G.F. (Gideon Francois), 1959-; Ribeiro, Shanelle; Van Wyk, Abraham Erasmus (Braam) (Magnolia Press, 2015-12-11)South Africa’s exceptionally rich and diverse flora faces challenges in terms of utilisation, management and conservation; these actions are underpinned by taxonomic research. The principal purpose of this review is to ...
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Klopper, Ronell Renett; Smith, G.F. (Gideon Francois), 1959-; Van Wyk, Abraham Erasmus (Braam) (International Association for Plant Taxonomy, 2013-04)Asphodelaceae c omprises a round 12 genera a nd about 1060 species (Africa, Mediterranean basin, Arabian Peninsula, west and central Europe, Madagascar, Central Asia, Australia, New Zealand), Hemerocallidaceae some 19 ...
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Klopper, Ronell Renett; Van Wyk, Abraham Erasmus (Braam) (National Botanical Institute, 2011-01)Cheilanthes deltoidea Kunze is a small and easily overlooked fern endemic to southern Africa. Hitherto it has been recorded in the western and northwestern parts of the Northern Cape, the Cederberg area of the Western Cape, ...
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Jordaan, Marie; Boon, Richard G.C.; Van Wyk, Abraham Erasmus (Braam) (Magnolia Press, 2015-05)Putterlickia neglecta, a new species here described and illustrated, is known from South Africa (Mpumalanga and northeastern KwaZulu-Natal), Swaziland and southern Mozambique. It is considered a near-endemic to the ...
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Grace, Olwen Megan; Klopper, Ronell Renett; Smith, G.F. (Gideon Francois), 1959-; Crouch, Neil R.; Figueiredo, Estrela; Rønsted, Nina; Van Wyk, Abraham Erasmus (Braam) (Magnolia Press (open access), 2013)The predominantly southern African Xanthorrhoeaceae subfam. Asphodeloideae (Asphodelaceae subfam. Alooideae) has long been regarded as comprising seven so-called alooid genera (Aloe, Astroloba, Chortolirion, Gasteria, ...
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Tilney, Patricia May; Van Wyk, Abraham Erasmus (Braam); Van der Merwe, Christiaan F. (Public Library of Science, 2012-07-05)Domatia are small structures on the lower surface of a leaf, usually taking the form of cavities, pouches, domes with an opening, or hairs (or a combination of these), and located in the axils between the main veins. They ...
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Systematics, diversity and forage value of indigenous legumes of South Africa, Lesotho and Swaziland Trytsman, Marike; Van Wyk, Abraham Erasmus (Braam); Masemola, Elizabeth Letty (Academic Journals, 2011-10-17)The diversity of legumes, indigenous to South Africa, Lesotho and Swaziland is reported using recorded descriptive and distribution data. A total of 24 tribes, 118 genera and 1662 species were documented with the majority ...
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Taxonomic notes on Acanthopsis Harv. (Acanthaceae, tribe Acantheae) : the group with trifid bracts Steyn, Hester Maria; Van Wyk, Abraham Erasmus (Braam) (Magnolia Press, 2017-02-10)In the southern African genus Acanthopsis, the morphology of the bracts is taxonomically useful at the species level. This contribution focuses on the taxonomy and conservation status of those members of the genus ...
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Rousseau, Philip; Vorster, Pieter J.; Afonso, Abilio V.; Van Wyk, Abraham Erasmus (Braam) (Magnolia Press, 2015-04)Continued work on the systematics of the genus Encephalartos has been conducted over a large area along the Mozambican coast to determine the infraspecific variation and taxonomic status of Encephalartos ferox populations. ...
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Steyn, Hester Maria; Van Wyk, Abraham Erasmus (Braam) (Magnolia Press, 2015-07)Acanthopsis is a taxonomically poorly understood genus confined to arid parts of southern Africa. This contribution is the first detailed assessment of the diversity within the Acanthopsis dispermahoffmannseggiana complex, ...
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Mashau, A.C.; Fish, Lyn; Van Wyk, Abraham Erasmus (Braam) (National Botanical Institute, 2013)Helictotrichon Besser ex Schult. & Schult.f. (excluding Avenula (Dumort.) Dumort. and Amphibromus Nees) is a genus of temperate C3 grasses with about 40 species (Gibbs Russell et al. 1990; Mabberley 2008). The genus is ...
Now showing items 21-40 of 43