Madawela, P.G., Arambewela, L.S.R., Jayatissa, P.M., Weerawansa, G., Ratnasooriya W.D. and Premakumara G.A.S.(1990). Some pharmacological and microbiological studies on Rauwolfia canescens. Proc. Ann. Sess., Sri Lanka Association for the Advancement of Science, 46, 147.