ABSTRACT
In many parts of northern Nigeria, indigenous knowledge about the significance of different tree species has been passed down from one generation to another without proper research and documentation. Therefore, this research work involves the preliminary ethnomedicinal and phytochemical evaluation of selected tree species among some local folks of northern Nigeria. Data were collected using structured questionnaires and oral interviews. Descriptive analysis was used to carry out the data analysis for all the tree species, while laboratory analysis was used to carry out the phytochemical screening of selected tree species in the study area. The result from the study shows that about twenty three (23) tree species belonging to diverse families were discovered. The phytochemical screening shows that only Piliostigma thonnigii obtained a positive result for all the parameters checked. This work also revealed the ethnomedicinal study of tree species in the study area.
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