1. V. Täckholm, Students Flora of Egypt, 2nd edn. Cairo University Press, Beirut 1974.Euphorbia paralias was collected near Borg el Arab and authenticated by Prof. Batonouny, Department of Botany. University of Cairo.
2. R.M. Sachs, private communication, 1978.
3. F.J. Evans and A.D. Kinghorn, Lloydia38, 363 (1975).
4. F.J. Evans and C.J. Soper, Lloydia41, 193 (1978).
5. F.J. Evans and R.J. Schmidt, Inflammation3, 215 (1979).