Nectaries are generally located in sepal petals, ovaries or styles.

According to the data of Flora of China, nectaries are generally located at the base of sepal petals, ovaries or styles, and are slender cell groups similar to mastoid or palisade tissues developed from epidermis.

Nectaries are exocrine glands that secrete nectar from plants. They have different shapes, such as protrusions, flat spots, small holes, small grooves, horns or furuncles.