GACHA, D.C., OSPINA, L.P., PALACIOS, J.A. and 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 (Oct. 2020), 171–174. DOI:https://doi.org/10.22159/ajpcr.2020.v13i10.38962.