Citrus sinensis, commonly known as orange or sweet orange, is a small evergreen tree originally domesticated in subtropical Asia. These plants can reach up to 30' tall. Slender spines may be found at the leaf axils, particularly on new growth. The glossy, aromatic leaves are ovate in shape and can reach up to 4" long. Their petioles are winged. Clusters of up to six fragrant, creamy white flowers bloom in early spring. The fruits are round to slightly oval in shape and can vary in size from 2-5" in diameter. The color of the fragrant, exterior rind varies from yellow to deep orange, and the sweet, interior pulp can also vary in color from a bright orange to orange-red.