periwinkle _catharanthus roseus_ & x28;l.& x29;

catharanthus ajmalisin akuammine alkaloid catharanthine content cure disease flowers have hodgkins ingredients leaves leukemia leurosine lochnerine norharman other periwinkle potential reserpine roseus serpentine tetrahydroalstonine vinblastine vincamine vincristine vindoline vindolinine vinleurosin vinrosidine