There are numerous other symbols and symbolic artefacts, both official and unofficial, including the Tudor rose, the nation's floral emblem, and the Three Lions featured on the Royal Arms of England. The Tudor rose was adopted as a national emblem of England around the time of the Wars of the Roses as a symbol of peace. It is a syncretic symbol in that it merged the white rose of the Yorkists and the red rose of the Lancastrians—cadet branches of the Plantagenets who went to war over control of the nation. It is also known as the "Rose of England". The oak tree is a symbol of England, representing strength and endurance. The Royal Oak symbol and Oak Apple Day commemorate the escape of King Charles II from the grasp of the parliamentarians after his father's execution: he hid in an oak tree to avoid detection before safely reaching exile.