Oak apple due to the superficial resemblance and the preponderance of the oak marble gall in the wild. Other galls found on oak trees include the oak artichoke gall and the acorn cup gall, but each of these has its own distinctive form. Some common oak-apple-forming species are the "Biorhiza pallida" gall wasp in Europe, "Amphibolips confluenta" in eastern North America, and "Atrusca bella" in western North America. Oak apples may be brownish, yellowish, greenish, pinkish, or reddish. Oak galls have been used in the production of ink since at least the time of the Roman Empire. From the Middle Ages to
Prix Royal-Oak Prix Royal-Oak The Prix Royal-Oak is a Group 1 flat horse race in France open to thoroughbreds aged three years or older. It is run at Longchamp over a distance of 3,100 metres (about 1 mile and 7½ furlongs), and it is scheduled to take place each year in late October. It is France's equivalent of the St. Leger Stakes, a famous race in England. The event was established in 1861, and it was initially called the Grand Prix du Prince Impérial. It was originally restricted to three-year-olds, and was part of a series of races based on the English