Red Christmas flowers are often called Poinsettias. They are a popular choice for decorating homes and churches during the holiday season. Poinsettias have bright red leaves and white flowers in the center, making them a beautiful and festive addition to any room. They are named after Joel Roberts Poinsett, an American botanist who introduced them to the United States in the 1820s. Poinsettias are also known as "Christmas Star," "Flame Leaf," and "Christmas Flower."