IV- Flavonoid containing drugs Buchu Leaf (Folium Buchu)
Origin: the dried leaves of Barosma betulina known as short Buchu, B. cranulata know as oval Buchu and B. serratifolia known as long Buchu F. Rutaceae
1- Crystalline flavone glycosides diosmin (present in epidermal cells) and hesperidine.
2- Mucilage: of pectose type present in epidermal cells.
3- Volatile oil with mint like odour containing mainly diosphenol.