除了现行高中生物学课本81页所举的几种植物外,自然界里,有感夜运动的植物还多,例如豆种植物中的洋(刺)槐(Robinia pseudo-acacia L.)的感夜运动,也甚为显明,容易被人看出。洋槐为奇数羽状复叶,小叶呈椭圓形,质薄呈鲜綠色。当在夜晚或白天阴雨时,小叶的叶柄基部稍微向下弯曲,小叶叶片下垂;当白天天气晴明时,小叶叶柄伸直,小叶叶片呈水平状; In addition to the current high school biology textbook on page 81 of several plants, in nature, there are more night movement of plants, such as beans in the ocean (acacia) acacia (Robinia pseudoacacia L.) Movement is also very obvious, easy to be seen. Acacia is an odd pinnately compound leaves, leaflets were oval, thin, was bright green. When at night or during the rainy days, the base of the petiole of the leaflets is slightly bent downward and the leaflets of the leaflets sag; when the weather is clear and bright, the leaflets of the leaflets are straight and the leaflets are horizontal;