1. Plant characteristics and distribution
Wood trees, 10 - 20m high, smooth bark. The staggered leaves have short, long or slightly stalked stalks, with 3 arched tendons. White flowers, which grow into clusters in the leaves or the ends of the branches. Egg-shaped nodules, when ripe, have a smooth purple color. The whole tree has the aroma of cinnamon. Much grown in northern provinces in Vietnam. According to new studies, C. cassia is a native cinnamon species of Vietnam that is popularly grown from the northern provinces to the southern provinces of the Central Region. Localities growing cinnamon with large areas are: Yen Bai, Quang Nam, Quang Ngai, Thanh Hoa, Nghe An and Quang Ninh. Vietnamese cinnamon species..