An ethnobotanical survey for documentation of antidiarrheal medicinal plants of Tiv speaking people of Benue state of Nigeria has revealed a wealth of knowledge on medicinal plants and their uses. Informants which included local traditional medical practitioners and elders have provided the information through a standard questionaire. A total of 31 species of plants from seventeen families were enumerated with scientific names, families, method of preparation and dosage. Caesepiniaceace was found the dominant family. Use Value of the plants were calculated with Detarium microcarpum having the highest use value. The study revealed that knowledge on medicinal plants is shrinking because of restriction from religion and lack of interest by the younger generations on uses of medicinal plants. The study calls on the Government to take proactive steps aimed at encouraging the documentation of ethanobotanical information in order to preserve this great natural resource from getting lost forever.
