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
Oak Apple Day rung at 6 am the bell-ringers used to place a large branch of oak over the church porch, and another over the lych gate. Smaller branches were positioned in the gateway of every house to ensure good luck for the rest of the year. Events still take place at Upton-upon-Severn in Worcestershire, Marsh Gibbon in Buckinghamshire, Great Wishford in Wiltshire (when villagers gather wood in Grovely Wood), and Membury in Devon. The day is generally marked by re-enactment activities at Moseley Old Hall, West Midlands, one of the houses where Charles II hid in 1651. At Fownhope in Herefordshire the