Mallavadhani, USudhakar, AMahapatra, AnitaNarasimhan, KThirunavokkarasu, MElix, John2015-12-130305-1978http://hdl.handle.net/1885/88579Keywords: biochemical composition; Parmeliaceae; Usnea; Usnea longissima (+)-Usnic acid; (-)-Placodiolic acid; Barbatic acid; Ergosterol-5ß- 8ß-peroxideß; Lichen; Parmeliaceae; Usnea longissimaPhenolic and steroidal constituents of the lichen Usnea longissima200410.1016/S0305-1978(03)00187-X2015-12-12