The documentation of medicinal uses of plants is becoming increasingly urgent because of the rapid loss of the natural habitat for some of these plants due to anthropogenic activities. Traditional knowledge of medicinal plants is also at risk of extinction due to the dependency on oral transmission, and as such, there is an urgent need to document such knowledge. The study aimed at document medicinal plants used in the traditional treatment of erectile dysfunction in Akinyele Local Government Area, Oyo State, Nigeria. To achieve this goal, a survey was conducted in eight villages within the local govt from April to December, 2017 using semi-structured questionnaires. Respondents were stratified into 2 strata in each of the village, namely Traditional Medical Practitioners (TMPs) or herbalist and hunters. Within each stratum, a random selection of 10 respondents were carried out thereby making 20 respondents in each village and total number of 160 respondents as sample size. The interview was conducted one-on-one using the local language (Yoruba). The data collected where analysed with descriptive statistics. The result showed a total number of 25 plants species belonging to 20 families used in the treatment of erectile dysfunction by the respondents in the study area. Fabaceae sub family of Caesalpinioidea and Mimisoideae contributed the highest number of plant species while tree and herbs had the highest percentage of plant growth form. Roots had the highest percentage of plant part used. The major method of preparation of the recipes was by grinding while the route of administration of recipes was by oral. Majority of medicinal plants used are rare and gotten from the wild (forest) while only few are cultivated. There is need for domestication, adequate protection and conservation of these useful medicinal plants to prevent their extinction. Also studies on the phytochemicals and pharmacological constituents of these medicinal plants to confirmed their bioactive ingredients relevant to the treatment of erectile dysfunction to be utilized for synthetic drugs.

Keywords: Ethno-Botanical Survey, Medicinal Plants, Traditional Treatment of Erectile Dysfunction, Akinyele Local (Nigeria).