Medicinal plants of Edo State, Nigeria.
An ethno-medical field survey was carried in communities spanning the three vegetation (Fresh Water Swamp, Lowland Rain Forest and Derived Savanna) zones of Edo State, Nigeria. 300 plant species distributed in 247 genera, belonging to 77 families, used in the treatment of various diseases were enumerated, identified and their ethnomedical value documented. The most used species include: Ageratum conyzoides, Asystasia gangetica, Azadirachta indica, Calopogonium muconoides, Carica papaya, Chromolaena odorata, Citrus aurantifolia, Citrus sinensis, Cocos nucifera, Colocasia esculenta, Commelina erecta, Elaeis guineensis, Eleusine indica, Ficus benghalensis, Gmelina arborea, Hura crepitans, Irvingia gabonensis, Mangifera indica, Manihot esculenta, Musa paradisiaca, Musa sapientum, Nauclea pobeguinii, Newbouldia laevis, Phyllanthus amarus, Psidium guajava, Sida acuta, Spondias mombin and Synedrella nodiflora. Leaves and roots were the most frequently used plant parts while malaria fever, muscular pains, gastrointestinal problems, cardiovascular problems, bronchial problems and skin infections are amongst the frequently managed conditions malaria fever, muscular pains, gastrointestinal problems, cardiovascular problems, bronchial problems and skin infections among others.