在替向日葵花作寫生時，發現花心種子（葵花子）的排列呈現一種很有規則的秩序。但不管再怎麼奇特的排列，對我們來說並沒有什麼太大的不同──除了它的美。
後來有一次上課，跟學生們解釋向日葵的生態，談到這種排列現象時，一個學生脫口而出，說它叫做「費波納奇數列」。她在國中是教美術的，竟然曉得這數學的專有名詞，真是不簡單呀！
最後在畫的右上角，我們安排一隻白蝴蝶，和群花相互呼應。
Realistic Sunflower（工筆向日葵）
I have portrayed this sunflower in the traditional realistic style.
I discovered that the seeds are arranged in a very orderly pattern when I sketched a sunflower. But no matter how unusual the arrangement is, it doesn’t really make much difference to us, except that it adds to the flower’s beauty.
I later mentioned the arrangement of the seeds when I was explaining sunflower ecology in the classroom, and one student exclaimed that this pattern was called a “Fibonacci sequence.” This student taught junior high school art, but she surprisingly knew this mathematical term. Quite unusual!
Finally, I painted a white butterfly in the upper right corner, and the butterfly and flowers highlight each other. ＠
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