Christmas more widespread throughout Britain. By the 1870s, people in the United States had adopted the custom of putting up a Christmas tree. Christmas trees may be decorated with lights and ornaments. Since the 16th century, the poinsettia, a native plant from Mexico, has been associated with Christmas carrying the Christian symbolism of the Star of Bethlehem; in that country it is known in Spanish as the "Flower of the Holy Night". Other popular holiday plants include holly, mistletoe, red amaryllis, and Christmas cactus. Along with a Christmas tree, the interior of a home may be decorated with these plants, along
Christmas Island red crab crabs per square metre, equalling an estimated total population of 43.7 million on Christmas Island. Less information is available for the population in the Cocos (Keeling) Islands, but numbers there are relatively low. Based on genetic evidence, it appears that the Cocos (Keeling) red crabs are relatively recent immigrants from Christmas Island, and for conservation purpose the two can be managed as a single population. During their annual breeding migration, red crabs will often have to cross roads, sometimes as many as 3 or 4, to get to their breeding grounds and then back to forest. As a result, red