| Unraveling the commercial market for medicinal plants and plant parts on the Witwatersrand, South Africa VL Williams, K Balkwill, ETF Witkowski Economic Botany 54 (3), 310-327, 2000 | 248 | 2000 |
| Animals traded for traditional medicine at the Faraday market in South Africa: species diversity and conservation implications MJ Whiting, VL Williams, TJ Hibbitts Animals in Traditional Folk Medicine, 421-473, 2013 | 139 | 2013 |
| Red Listed medicinal plants of South Africa: Status, trends, and assessment challenges VL Williams, JE Victor, NR Crouch South African Journal of Botany 86, 23-35, 2013 | 132 | 2013 |
| A lexicon of plants traded in the Witwatersrand umuthi shops, South Africa VL Williams, K Balkwill, ETF Witkowski Bothalia 31 (1), 71-98, 2001 | 90 | 2001 |
| The use of incidence-based species richness estimators, species accumulation curves and similarity measures to appraise ethnobotanical inventories from South Africa VL Williams, ETF Witkowski, K Balkwill Biodiversity and Conservation 16, 2495-2513, 2007 | 79 | 2007 |
| Risks to birds traded for African traditional medicine: a quantitative assessment VL Williams, AB Cunningham, AC Kemp, RK Bruyns PloS one 9 (8), e105397, 2014 | 77 | 2014 |
| The Witwatersrand muti trade VL Williams Veld & Flora 82 (1), 12, 1996 | 77 | 1996 |
| Bioactive constituents in Prunus africana: Geographical variation throughout Africa and associations with environmental and genetic parameters CAC Kadu, A Parich, S Schueler, H Konrad, GM Muluvi, O Eyog-Matig, ... Phytochemistry 83, 70-78, 2012 | 75 | 2012 |
| Application of diversity indices to appraise plant availability in the traditional medicinal markets of Johannesburg, South Africa VL Williams, ETF Witkowski, K Balkwill Biodiversity and Conservation 14 (12), 2971-3001, 2005 | 72 | 2005 |
| Phylogeography of the Afromontane Prunus africana reveals a former migration corridor between East and West African highlands CAC Kadu, S Schueler, H Konrad, GMM Muluvi, O EYOG‐MATIG, ... Molecular Ecology 20 (1), 165-178, 2011 | 69 | 2011 |
| Bones of Contention: An Assessment of the South African Trade in African Lion Panthera leo Bones and Other Body Parts. VL Williams, DJ Newton, AJ Loveridge, DW Macdonald TRAFFIC, Cambridge, UK & WildCRU, Oxford, UK, 2015 | 66 | 2015 |
| A roaring trade? The legal trade in Panthera leo bones from Africa to East-Southeast Asia VL Williams, AJ Loveridge, DJ Newton, DW Macdonald PloS one 12 (10), e0185996, 2017 | 65 | 2017 |
| The impact of traditional use on vultures in South Africa S McKean, M Mander, N Diederichs, L Ntuli, K Mavundla, V Williams, ... Vulture News 65, 15-36, 2013 | 64 | 2013 |
| A picture of health? Animal use and the Faraday traditional medicine market, South Africa VL Williams, MJ Whiting Journal of Ethnopharmacology 179, 265-273, 2016 | 60 | 2016 |
| Volume and financial value of species traded in the medicinal plant markets of Gauteng, South Africa VL Williams, ETF Witkowski, K Balkwill International Journal of Sustainable Development & World Ecology 14 (6), 584-603, 2007 | 58 | 2007 |
| Relationship between bark thickness and diameter at breast height for six tree species used medicinally in South Africa VL Williams, ETF Witkowski, K Balkwill South African Journal of Botany 73 (3), 449-465, 2007 | 56 | 2007 |
| Divergent pattern of nuclear genetic diversity across the range of the Afromontane Prunus africana mirrors variable climate of African highlands CAC Kadu, H Konrad, S Schueler, GM Muluvi, O Eyog-Matig, A Muchugi, ... Annals of botany 111 (1), 47-60, 2013 | 51 | 2013 |
| Hawkers of health: an investigation of the Faraday Street traditional medicine market in Johannesburg, Gauteng VL Williams Plant Ecology and Conservation Series, 2003 | 51 | 2003 |
| South Africa’s pathways of introduction and dispersal and how they have changed over time KT Faulkner, A Burness, MJ Byrne, S Kumschick, K Peters, MP Robertson, ... Biological Invasions in South Africa 14, 313, 2020 | 43 | 2020 |
| Size-class prevalence of bulbous and perennial herbs sold in the Johannesburg medicinal plant markets between 1995 and 2001 VL Williams, K Balkwill, ETF Witkowski South African Journal of Botany 73 (1), 144-155, 2007 | 42 | 2007 |
