"Both these movements are important for the Formosa lily, because if its large trumpet-shaped flower opened upward it would fill with water, but if it remained pointing downward this would not be conducive to insect pollination," says Hsu, who concludes that this is the reason for the lily's floral "double flip."
「開花運動對花朵具有重要性，不經運動，台灣百合的大管狀花朵，勢必積水，但若只朝下生長，又不利於昆蟲授粉，」許圳塗判斷這是台灣百合一邊開花一邊轉圈圈的原因。