A5024551117- Plant Diversity and Evolution
- Plant chemical constituents analysis
- Phytochemistry and Biological Activities
- Chemical synthesis and alkaloids
- Plant and Fungal Species Descriptions
- Ethnobotanical and Medicinal Plants Studies
- African Botany and Ecology Studies
- Ecology and Vegetation Dynamics Studies
- Botany, Ecology, and Taxonomy Studies
- Phytochemicals and Antioxidant Activities
- Plant Ecology and Taxonomy Studies
- Botany and Plant Ecology Studies
- Mediterranean and Iberian flora and fauna
- Fern and Epiphyte Biology
- Essential Oils and Antimicrobial Activity
- Flowering Plant Growth and Cultivation
- Botanical Studies and Applications
- Plant Pathogens and Fungal Diseases
- Plant and animal studies
- Botanical Research and Chemistry
- Phytochemical compounds biological activities
- Botanical Research and Applications
- Alkaloids: synthesis and pharmacology
- Rangeland Management and Livestock Ecology
- Traditional and Medicinal Uses of Annonaceae
South African National Biodiversity Institute
2005-2025
University of Johannesburg
2007-2021
University of Pretoria
2021
National Biodiversity Institute
2005-2017
Abstract Background and Aims Annuals produce little wood due to their short life cycle, while perennials can accumulate more, though not all do. Consequently, lifespan extension is a prerequisite for—but synonymous with—secondary woodiness. Even if shift perenniality does substantially increase production, it may still affect anatomy, as annuals prioritise rapid growth, whereas invest in structural resilience. Heliophila, genus of the Brassicaceae from Cape Floristic Region, provides an...
Abstract Recent studies have shown that Acacia is polyphyletic and must be split into five genera. Proposal 1584 would retypify : the type of Australian taxon A . penninervis conserved over current lectotype ( scorpioides ) an African taxon. We disagree with recommendation Spermatophyte Committee to endorse this proposal. Contrary Article 14.12 ICBN , no detailed case against conservation was presented in 1584. maintain there are strong arguments conservation, such as large number countries...
The unigeneric tribe Heliophileae encompassing more than 100 Heliophila species is morphologically the most diverse Brassicaceae lineage. endemic to southern Africa, confined chiefly southwestern South home of two biodiversity hotspots (Cape Floristic Region and Succulent Karoo). monospecific Chamira ( C. circaeoides ), only crucifer with persistent cotyledons, traditionally retrieved as closest relative Heliophileae. Our transcriptome analysis revealed a whole-genome duplication (WGD)...
Sesuvium and Cypselea are closely related succulent genera within the Sesuvioideae (Aizoaceae). Since is nested in molecular studies both share traits separating them from other members of subfamily, we propose to include Sesuvium. (incl. Cypselea) comprises 14 species distributed worldwide with centres diversity southern Africa North Central America. erect procumbent herbs opposite leaves that often bear conspicuous sheath-like lateral appendages on petioles (pseudostipules). These...
Fruits of the Apiaceae are generally bilaterally symmetric (disymmetric), i.e., two mericarps identical, so that they symmetrical at commissural plane. Some genera, however, have zygomorphic (monosymmetric) fruits, where single plane symmetry is perpendicular to In nine Heteromorpha species from African mainland, zygomorphy results expansion all five sepaline ribs form wing-like structures (the petaline never develop same extent). This peculiar wing already evident flowering stage. The eight...
The current concept of Alepidea amatymbica Eckl. and Zeyh. embraces two distinct species which can be distinguished on the basis leaf morphology: (1) A. sensu stricto, has radical leaves attenuate at their bases (2) cordifolia B.-E. Van Wyk, a new with cordate bases. also differs in presence minute hispid hairs terminal parts peduncles sometimes basal involucre sepals, styles stylopodium. are vicariants, occurring from Eastern Cape Province northwards to southwestern KwaZulu–Natal here...
Gladiolus rhodanthus is a new species known from single population on the summit of Stettynsberg near Villiersdorp in Western Cape. South Africa The most closely resembles G. hirsutus and G caryophyllaceus but differs both flower shape markings its ecology reproductive biology. It forms part guild long- tubed, pink-flowered including Erica praecox, Pelargonium radiatum Watsonia paucifolia which are pollinated by an undescribed long-proboscid fly. Moegistorhynchus sp nov. (Diptera :...
Summary Van Wyk, B.‐E., Tilney, P. M. & Winter, J. D.: Four new genera of woody Apiaceae Madagascar. – Taxon 48: 737‐745. 1999. ISSN 0040‐0262. Eight Malagasi species were previously misplaced in the African genus Heteromorpha but have been recently excluded from it. They, with E. Pseudocarum, remarkably unspecialised fruits and do not fit within Drude's classification system for family, as they combine vittae characteristic Saniculoideae Apioideae. They oil ducts fruit ribs (intrajugal...
Abstract Taxonomic research and resultant checklists play a crucial role in underpinning all biodiversity research. Compiling an inventory of plants that occur region or country is complicated task can be subject to errors incompleteness, which turn hinder other fields botanical South Africa has put place rigorous defensible method compiling updating national checklist, serve as guide any the process doing so. The creating checklist significance this presented, governance, including choice...
PLECTRANTHUS PORCATUS, A NEW SPECIES ENDEMIC TO THE SEKHUKHUNELAND CENTRE OF PLANT ENDEMISM.LIMPOPO PROVINCE. SOUTH AFRICA
All 17 species of Heteromorpha Cham. Schltdl. (sensu Humbert 1956), all three Polemannia Eckl. Zeyh. and the monotypic Polemanniopsis B.L. Burtt were investigated for leaf epidermal characters. Stomatal type was anomocvtic. with an exception in only one Madagascar species, H. betsileensis. The distribution density stomata (on both surfaces) are diagnostic some species. number, size outline normal cells different juvenile adult leaves these differences vary between Seven trichome types...
A new species, Raphionacme villicorona Venter is described from the Sekhukhuneland Centre of Plant Endemism in Limpopo Province, South Africa. It was discovered dry mountain savanna northern Leolo Mountain range. R. belongs to a small group species which gynostegium elevated above corolla mouth. The villous condition corona lobes unique genus. An IUCN Red List status VU D2 recommended.
Aframmi is a mixed concept made up of disparate elements from three different genera. Recent studies angolense, the type species Aframmi, provide evidence that belongs to genus Heteromorpha. An examination specimen longiradiatum shows it be fundamentally generitype, A. and better placed in Physotrichia, which was originally described. The third element, previously misidentified as longiradiatum, an yet undescribed with populations both sides Zambia-Tanzania border well Angola. This new here...