The thistle is the national flower of Scotland. According to legend, Scotland was almost invaded by a Norse army many centuries ago. Scottish warriors, who were supposed to be on guard, were sleeping as the Norse army crept in. One of the invaders, who was barefoot, stepped on a thistle and screamed out in pain. His screams woke the Scottish warriors, who jumped to their feet and defeated the invaders. The Scots honored the thistle's role in saving the country by making it the national flower.