Gaillardia megapotamica (Spreng.) Baker   β-pinene (24.2%), (Z)-β-ocimene (16.5%), α-pinene (7.7%), limonene (7.5%), and β-caryophyllene (6.7%)  Plaque reduction assay, DENV−2, JUNV and HSV-1  140.6, 49.8, and 99.1  [38]