| 1 | Phyllotaxis usually accords with the Fibonacci sequence and satisfies the relationship of the golden section mathematically. | |
| 2 | This is where the spiral is marked out traversing successive edges of golden section rectangles. This exact spiral exists in many natural forms such as in seashells and plants. | |
| 3 | The length, width and content of water of leaves with different leaf arrangement of oil palm had been measured to find the changing rules of them in this paper. |