ABSTRACT
References 1. Burrows GE, Tyrl RJ: Toxic Plants of North America. Iowa State University Press, Ames. pp 537-538, 2001. 2. Connolly JD, Hill RA: Dictionary of Terpenoids vol2. Di-and Higher Terpenoids. Chapman & Hall, London, pp 657-1460, 1991. 3. Watt JM, Breyer-Brandwijk MG: The medicnal and poisonous plants of southern and eastern Africa. E & S Livingston, Edinburgh pp 564-565, 1962.
