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) and lines are marked in the text, so 4.5.151–4 would be Act 4, Scene 5, lines 151 through 154. In addition an additional "through line number" allows unambiguous reference to any line (including stage directions and other text not traditionally assigned a line number). 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