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):
Hamlet the longest-running "Hamlet" in the U.S. to date. A live film of the production was produced using "Electronovision", a method of recording a live performance with multiple video cameras and converting the image to film. Eileen Herlie repeated her role from Olivier's film version as the Queen, and the voice of Gielgud was heard as the ghost. The Gielgud/Burton production was also recorded complete and released on LP by Columbia Masterworks. The first "Hamlet" in color was a 1969 film directed by Tony Richardson with Nicol Williamson as Hamlet and Marianne Faithfull as Ophelia. In 1990 Franco Zeffirelli, whose Shakespeare