lemon | order | rosids <sep> the lemon (citrus limon) is a species of small evergreen trees in the flowering plant family rutaceae, native to asia, primarily northeast india (assam), northern myanmar or chinathe tree's ellipsoidal yellow fruit is used for culinary and non-culinary purposes throughout the world, primarily for its juice, which has both culinary and cleaning uses the pulp and rind are also used in cooking and baking the juice of the lemon is about 5% to 6% citric acid, with a ph of around 22, giving it a sour taste the distinctive sour taste of lemon juice makes it a key ingredient in drinks and foods such as lemonade and lemon meringue pie 
lemon is under the order of rosids.no information