Red Listed Medicinal Plants of South Africa: Status, Trends, and Assessment Challenges
South African Journal of Botany 86 (2013) 23–35 Contents lists available at SciVerse ScienceDirect South African Journal of Botany journal homepage: www.elsevier.com/locate/sajb Red Listed medicinal plants of South Africa: Status, trends, and assessment challenges V.L. Williams a,⁎, J.E. Victor b, N.R. Crouch c,d a School of Animal Plant and Environmental Sciences, University of the Witwatersrand, Private Bag 3, Wits 2050, South Africa b National Herbarium, SANBI, Private Bag X101, Pretoria 0001, South Africa c Ethnobotany Unit, SANBI, PO Box 52099, Berea Road, 4007, South Africa d School of Chemistry and Physics, University of KwaZulu-Natal, 4041 Durban, South Africa article info abstract Article history: In 2009, South Africa completed the IUCN Red List assessments of 20,456 indigenous vascular plant taxa. During Received 8 March 2012 that process, medicinal plant species (especially those sold in informal muthi markets) were identified so that Received in revised form 22 September 2012 potential extinction risks posed to these species could be assessed. The present study examines and analyses Accepted 24 January 2013 the recently documented threat statuses of South African ethnomedicinal taxa, including the number of species Available online 28 February 2013 used, revealing family richness and the degree of endemism, and calculates the Red List Index (RLI) of species Edited by B-E Van Wyk survival to measure the relative degree of threat to medicinal species. Approximately 2062 indigenous plant spe- cies (10% of the total flora) have been recorded as being used for traditional medicine in South Africa, of which it Keywords: has been determined that 82 species (0.4% of the total national flora) are threatened with extinction at a national Extinction level in the short and medium terms and a further 100 species are of conservation concern (including two species GSPC already extinct in the wild).
[Show full text]