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
Royal Oak station (SkyTrain) Expo Line branch to Production Way–University in 2016. Royal Oak is served by a single entrance located on the south side of the station at the corner of Beresford Street and Royal Oak Avenue. Royal Oak is served by one bus connection: a community shuttle route to Edmonds station. Royal Oak station (SkyTrain) Royal Oak is an elevated station on the Expo Line of Metro Vancouver's SkyTrain rapid transit system. The station is located at the intersection of Beresford Street and Royal Oak Avenue in Burnaby, British Columbia, a short walk south of Kingsway and Imperial Avenue. Royal Oak station