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 Hotel brick corner building with decorative parapet, label moulds to windows and a simple awning. The current façade, which is in Victorian Free Classical style, dates from 1886. It is one of the few hotels in the local area that never possessed a verandah, with the current awning only having been added in recent years. During the 1960s and 1970s, a side door in College Street still led to the ladies parlour. Royal Oak Hotel The Royal Oak Hotel is a pub located in Balmain, a suburb in the inner west region of Sydney, in the state of New South Wales,