Ruta graveolens the isolation of the furanocoumarin chalepensin. The essential oil of "R. graveolens" contains two main constituents, undecan-2-one (46.8%) and nonan-2-one (18.8%). The bitter taste of its leaves led to rue being associated with the (etymologically unrelated) verb "rue" "to regret". Rue is well known for its symbolic meaning of regret and it has sometimes been called "herb-of-grace" in literary works. It is one of the flowers distributed by the mad Ophelia in William Shakespeare's "Hamlet" (IV.5): It was planted by the gardener in "Richard II" to mark the spot where the Queen wept upon hearing news of Richard's capture (III.4.104–105):
Laertes (Hamlet) Laertes (Hamlet) Laertes is a character in William Shakespeare's play "Hamlet". Laertes is the son of Polonius and the brother of Ophelia. In the final scene, he kills Hamlet with a poisoned sword to avenge the deaths of his father and sister, for which he blamed Hamlet. While dying of the same poison, he implicates King Claudius. The Laertes character is thought to be originated by Shakespeare, as there is no equivalent character in any of the known sources for the play. His name is taken from Laërtes, father of Odysseus in Homer's Odyssey. In the first act, Laertes is