| Title:  Dita Bark Additional Names:  Alstonia cortex;  Australian fever bark Literature References:  The dried bark of Alstonia scholaris (L.) R. Br. and of A. constricta F. Muell., Apocynaceae.  Habit.  India, Ceylon, Philippine Islands, Australia.  Constit.  The alkaloids echitamine, echitenine, alsonine, porphyrine; echicerin¾a non-nitrogenous substance; echitin, alstonidine and echitein.  |