Ferns have an ancestry reaching back 400 million years. Yet the geologically young island of Taiwan has over 600 kinds of fern, giving it one of the highest densities of fern species in the world.
蕨類又被稱為羊齒植物，老祖先來自四億年前的古生代，地質年輕的台灣卻擁有六百多種蕨類，是全球蕨類密度最高的地區之一。