地衣是一种时常出现在我们周围,却又很容易被我们忽视的神奇植物。看到地衣的第一眼,我们并不会认为它是一种植物,因为它不具备我们脑海中关于绿色植物应有的特征。那么地衣到底是什么样子?没错,图中岩石上色彩缤纷的“美丽外衣”就是地衣。地衣为什么会有这么多种颜色而又不像其他植物那样有根、茎、叶呢?这是由地衣的特殊结构决定的:地衣是真菌和藻类的结合体。因为真菌和藻类长年紧密地结合在一起,无论是 Lichens are wonderful plants that often appear around us but are easily overlooked by us. We do not see it as a plant at first glance, because it does not have the characteristics that we should have about green plants in our minds. So what exactly is the lichen? True, the colorful “beautiful coat” on the rocks in the picture is the lichen. Why do lichens have so many colors but unlike other plants have roots, stems, leaves? This is determined by the special structure of lichens: lichen is a mixture of fungi and algae. Because fungi and algae all year long, closely together, either