Citation:Paranagama, P.A, Kannangara, B.T.S.D.P. and Rajapaksha, R. S. C. G. (2010) Endolichenic fungi in Usnia sp. From Hakgala Montane Forest in Sri Lanka as a Novel Source of Bioactive Natural Products, Proceedings of the international symposium on Natural Products Chemistry and its contribution to the economy, environment and the social well being, University of Peradeniya, Sri Lanka, June 26, 2010, 29-33.