Citrus hybrids are plants created by crossbreeding different species of the Citrus genus. These hybrids often combine desirable traits, such as flavor, size, and disease resistance, resulting in new varieties of fruits like tangerines, lemons, and grapefruits. Common examples of citrus hybrids include the clementine, a cross between a mandarin and a sweet orange, and the blood orange, which is a variety of orange with a unique red flesh. These hybrids are popular for their unique tastes and are cultivated in many regions around the world.