Wadakaha is a medicinal plant of great commercial value and a potential export crop in sri lanka. It is in its look a marshy herb with a stout creeping and branching rootstock. It accurse throughout India , sri lanka , Philippines , temperate regions of Asia , Europe and north America china , Japan and southern Russia in sri lanka , the plant is cultivated as a medicinal herb. The rhizome of wadakaha contains alkaloids , mainly choline , the bitter glycosides acorin and calamine a an essential oil calamol, a resin , gum starch and tannin.
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