定義： a fruit which develops from a carpel and at maturity comprises a dry exocarp, dry mesocarp, and dry endocarp that are elongated into a wing-like structure.
定義： a plant that produces wood as its structural tissue. Wood is a structural cellular adaptation that allows woody plants to grow from above ground stems year after year, thus making some woody plants the largest and tallest terrestrial plants. Wood is usually primarily composed of xylem cells with cell walls made of cellulose and lignin
