Anthos or Antheus (Flower) is a play by the 5th century BCE Athenian dramatist Agathon. The play has been lost. The play is mentioned by Aristotle in his Poetics (1451b) as an example of a tragedy with a plot which gives pleasure despite the incidents and characters being entirely made up.[1][2]Anthos is the only known Greek tragedy play whose plot was entirely invented by the poet.[3] Other 5th century tragedies were based on myth, or less frequently on actual history.[3]