The Rubiaceae are a family of flowering plants, commonly known as the coffee, madder or bedstraw family. It consists of terrestrial trees, shrubs, lianas or herbs that are recognizable by simple, opposite leaves with interpetiolar stipules.
Quinine is a drug which is made from the bark of the Cinchona tree, belongs to Rubiacea family. A number of various other chemicals can also be synthesised from Cinchona and these include cinchonine, cinchonidine and quinidine.