From Longman Dictionary of Contemporary Englishpotpourripot‧pour‧ri /ˌpəʊpʊˈriː $ ˌpoʊ-/ noun 1 
DH[uncountable] a mixture of pieces of dried flowers and leaves kept in a bowl to make a room smell pleasant2 [singular]MIX a mixture of things that are not usually put together, for example different pieces of music or writingpotpourri of a potpourri of literary styles
DH[uncountable] a mixture of pieces of dried flowers and leaves kept in a bowl to make a room smell pleasant2 [singular]MIX a mixture of things that are not usually put together, for example different pieces of music or writingpotpourri of a potpourri of literary stylesExamples from the Corpus
potpourri• The rest of the Standard's hardware is a potpourri of virtually every guitar that Mr Carlton has been associated with.• a potpourri of religious ideas• Some of the athletes in this international potpourri, like Kaila, McGuirk and Thomson, hold dual citizenship.• He presented these treasures plainly; without even a bowl of potpourri on a table top.• For a week six bubbles were filled with boxes full of potpourri which had become infested with moths.• All round, the rich stink of sweat, urine, spilled ale, even a trace of potpourri.• Use them in herbal teas or potpourri.• Forget the potpourri of herbs and spices.Origin potpourri (1600-1700) French pot pourri “decayed pot” 