A favorite at Christmas, poinsettias are really shrubs to small trees, typically reaching a height of 0.6 to 4 m (2 to 16 ft). The plant bears dark green dentate leaves that measure 7 to 16 cm (3 to 6 inches) in length. The top leaves, known as bracts, are flaming red, pink, or white and are often mistaken as flowers. The actual flowers are grouped within the small yellow structures found in the center of each leaf bunch, which are called cyathia.
