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 Journal of Pharmaceutical and Clinical Research, v. 13, n. 10, p. 171-174, 7 Oct. 2020.