Background. Garlic mustard (Alliaria petiolata) is an invasive herb that has spread throughout much of the United States over the past 150 years, becoming one of the worst invaders of forests in the American Northeast and Midwest.ackground. Garlic mustard (Alliaria petiolata) is an invasive herb that has spread throughout much of the United States over the past 150 years, becoming one of the worst invaders of forests in the American Northeast and Midwest.
Mystery fiction. Mystery, 1934 mystery fiction magazine cover. Mystery fiction is a genre of fiction usually involving a mysterious death or a crime to be solved. In a closed circle of suspects, each suspect must have a credible motive and a reasonable opportunity for committing the crime.
Elaborate comic intrigues involving deception, disguise, and mistaken identity are the rule. Examples of the genre include Shakespeare's Comedy of Errors, the Pink Panther movies, and the films of the Marx Brothers and Three Stooges. Romantic Comedy. Perhaps the most popular of all comic forms--both on stage and on screen--is the romantic comedy.