"The bright red 'flower' of a poinsettia is not really a flower at all – it’s made of up special leaves called bracts that have evolved to look like flower petals. The real flower consists of the small yellow parts in the center of the bracts. This is where the pollen is produced and where your poinsettia seed pods will develop. Poinsettias have both male and female parts and can either self-pollinate or cross pollinate with other poinsettias." gardeningknowhow.com