A5074057488- Plant Diversity and Evolution
- African Botany and Ecology Studies
- Ethnobotanical and Medicinal Plants Studies
- Plant and animal studies
- Botany and Plant Ecology Studies
- Botany, Ecology, and Taxonomy Studies
- Ecology and Vegetation Dynamics Studies
- Plant Taxonomy and Phylogenetics
- Fern and Epiphyte Biology
- Plant and Fungal Species Descriptions
- Mediterranean and Iberian flora and fauna
- Botanical Research and Applications
- Phytochemistry and biological activity of medicinal plants
- Plant Parasitism and Resistance
- Plant Pathogens and Fungal Diseases
- Natural Compounds in Disease Treatment
- Botanical Research and Chemistry
- Botanical Studies and Applications
- Phytochemistry and Biological Activities
- Phytochemistry and Bioactive Compounds
- Mycorrhizal Fungi and Plant Interactions
- Lichen and fungal ecology
- Plant Reproductive Biology
- Legume Nitrogen Fixing Symbiosis
- Bryophyte Studies and Records
University of Pretoria
2016-2025
South African National Biodiversity Institute
2017-2025
Stellenbosch University
2018-2024
National Biodiversity Institute
2023
Tygerberg Hospital
2018
Instituto de Investigação Agrária de Moçambique
2015
University of Johannesburg
2009
University of Colorado System
2005
University of Colorado Health
1996
Mammal Research Institute
1993
Aloe vera supports a substantial global trade yet its wild origins, and explanations for popularity over 500 related species in one of the world’s largest succulent groups, have remained uncertain. We developed an explicit phylogenetic framework to explore links between rich traditions medicinal use leaf succulence aloes. The hypothesis clarifies origins Arabian Peninsula at northernmost limits range genus originated southern Africa ~16 million years ago underwent two major radiations driven...
An inventory and analysis of the general uses plants by Vhavenḓa, a cultural group who historically occupied region known as Venḓa, currently referred to Vhembe District, Limpopo Province, South Africa, are presented. Information on plant was gathered through literature review interviews conducted amongst Tshivenḓa-speaking rural communities in District. The aim study document all Vhavenḓa useful plants, i.e., practical importance fulfilling everyday needs people. A total 574 species from...
A hierarchical classification, vegetation map, description and ecological interpretation of the plant communities Tembe Elephant Park surrounding areas are presented. The study area falls within Maputaland Centre Endemism, which is part Maputaland-Pondoland Region, a centre diversity rich in endemic plants animals. Sixty-four sample plots were distributed stratified manner throughout area. TWINSPAN refined by Braun-Blanquet procedures, revealed eight distinct, mainly woodland communities....
Tiganophyton karasense, an evergreen dwarf shrub, is described as a new species. A genus and family are also proposed for it in the order Brassicales. Phylogenetic analysis of DNA sequence data indicate that sister to Bataceae/Salvadoraceae, all three Koeberliniaceae. First realized be undescribed 2010, T. karasense rare species known only from localities arid Karas Region, southern Namibia. These small shrubs grow near edges seasonal pans on calcareous substrate underlaid by shales...
VON TEICHMAN, I. & VAN WYK, A. E., 1991. Trends in the evolution of dicotyledonous seeds based on character associations, with special reference to pachychalazy and recalcitrance. The possible evolutionary status endothelium, hypostase, pachychalaza recalcitrant viability behaviour is considered relation bitegmy/unitegmy, crassinucellate/tenuinucellate ovules, nuclear/cellular endosperm development, large/small seed size, woody/herbaceous habit tropical/temperate habitat. presence...
Increased expression of proinflammatory cytokines appears to be an important factor contributing the development acute lung injury. In murine models, mRNA levels and immunoregulatory cytokines, including IL-1alpha, IL-1beta, TGF-beta1, TNF-alpha, are increased in intraparenchymal mononuclear cells 1 h after hemorrhage. Binding elements for nuclear transcriptional regulatory factors, kappaB (NF-kappaB), CCAAT/enhancer binding protein beta (C/EBPbeta), serum (Sp1), activator (AP-1), cyclic AMP...
Background South African plant species of the genera Fadogia, Pavetta and Vangueria (all belonging to Rubiaceae) are known cause gousiekte (literally 'quick disease'), a fatal cardiotoxicosis ruminants characterised by acute heart failure four eight weeks after ingestion. Noteworthy is that all these plants harbour endophytes in their leaves: nodulating bacteria specialized nodules non-nodulating intercellular spaces between mesophyll cells Fadogia Vangueria. Principal Findings Isolation...
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, Haworthia, Lomatophyllum, Poellnitzia).A reassessment of the classification traditionally broadly circumscribed genus Aloe, a charismatic Old World group leaf succulents, necessitated nomenclatural adjustments.We propose narrower generic concept for Aloe s. str.and recognition...
Bark is an important source of medicine in South African traditional healthcare but poorly documented. From thorough surveys the popular ethnobotanical literature, and other less widely available sources, 174 species (spanning 108 genera 50 families) used for their bark KwaZulu-Natal, were inventoried. Vernacular names, morphological phytochemical properties, usage conservation data captured a database that aimed to synthesise published information such species. Data specificity was found be...
The mature stomatal morphology of 11 southern African species Eugenia, and also E. uniflora L. (naturalized) incerta Diimmer (a garden plant unknown origin) has been studied by light scanning electron microscopy. Leaves all the are hypostomatic water-stomata occasionally present. Two different types, X Y, differing mainly in their cuticular ornamentation, were found species. grouping based on characters supports a previous basis periderm seed characters. Conspicuous lipid bodies,...
Petalidium hoarusibense, hitherto misidentified as P. rossmannianum and ohopohense, is here described a new species. It range-restricted species, only known from the area to south southeast of Okandjombo in Kaokoveld Centre Endemism, northwestern Namibia, where it grows on arid hillsides along ephemeral riverbeds drainage lines. Diagnostic characters for hoarusibense include pale grey appearance plants, single or multi-stemmed thick rootstock, vegetative parts with dense white indumentum...