Petal Secretory Stucture of Osmanthus fragrans Lour.

To reveal the features of secretory structure of Osmanthus fragrans Lour. , the petals of O. fragrans were studied thoroughly by paraffin sectioning and electronic scanning microscope. The petal of O. fragrans is comprised of epidennis, fundamental tissues and vascular bundles. The petal epidennis consists of one layer of cells with obvious and regular tubercles, plentiful brush-shaped hairs and a small amount of stomas. The fundamental tis- sue includes many layers of parenchyma cells which contain much prolific oil substances and arrange irregularly. The secretory structure' of O. fragrans can be named as Osmophores. The aromatic substances are produced, accumu- lated and stored temporarily in the petal fundamental tissues, and then secreted outside from the petal epidennis.