GACHA, D. C.; OSPINA, L. P.; PALACIOS, J. A.; AGUIRRE, O. R. Objective: Antifungal Activity of Total Ethanolic Extract and Fractions of Usnea Varieties Were Proved Against Aspergillus Niger, Penicillium Digitatum, and Rhizopus Nigricans Fungi. Methods: To Perform the Study of Relative Antifungal Activity (AFR), Flu. Asian J Pharm Clin Res 2020, 13, 171-174.