Ethnobotanical study of medicinal plants traditionally used in Gokwe South District, Zimbabwe

Abstract

Traditional medicines play an important role in health care provision in developing countries as primary therapies and/or as complementary medicines. The aim of this study was to document medicinal plants used in Gokwe South District in Zimbabwe. Forty six participants from 12 wards were interviewed between October 2020 and April 2021 using a semi-structured questionnaire. Ethnobotanical data including local names of the plants, plant parts used, medicinal uses, methods of preparation and administration were documented. The ethnomedicinal data were analysed using different quantitative indices including informant consensus factor (ICF), fidelity level (FL), relative frequency of citation (RFC) and use value (UV). One hundred and twenty seven plant species from 49 families were documented for treating and managing 23 medical categories. Gastro-intestinal disorders (60 citations), respiratory infections (47 citations), reproductive system and health (33 citations) and sexually transmitted infections (21 citations) were commonly treated with medicinal plants within the study area. Nineteen species were recorded for the first time as sources of traditional medicines with no prior record of being used as medicinal plants for any specific disease or ailment in the country. Trees (58.0%) were the main sources of traditional medicines, followed by shrubs (27.0%), herbs and climbers (10.0% and 5.0%, respectively). The most frequently used plant parts were roots (48.8%), followed by bark (37.8%) and leaves (34.6%). The variety of plants that are used to treat and manage human diseases and ailments in the study area emphasizes the importance that medicinal plants play in primary health care system of the rural people in Gokwe South District. Some of the plants used in the study area were characterized by high frequency of citation and use values, and species such as Xeroderris stuhlmannii (Taub.) Mendonça & E.P.Sousa and Zanthoxylum chalybeum Engl., if adequately explored could be instrumental in the discovery and development of health promoting, pharmaceutical products