GACHA, D. C., OSPINA, L. P., PALACIOS, J. A., & AGUIRRE, O. R. (2020). 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 Journal of Pharmaceutical and Clinical Research, 13(10), 171-174.