苏铁又名铁树、凤尾草、线鸡尾、观音莲,为稀有珍贵树种,也是常绿观赏植物和良药。据有关资料介绍,由植物化石考察,苏铁发生于古生代二叠纪,繁盛于中生代侏罗纪,至白垩纪绝灭,是一种古老的植物,距今约1—2亿年。而我省兴义县扬坪公社发现一片约四平方公里的地方长有苏铁。这种苏铁类似昆明苏铁,但有待进一步鑑定。 Cycas, also known as Tieshu, Pteris, line tail, Guanyinlian, precious rare species, but also evergreen ornamental plants and medicine. According to relevant information, from the study of fossil plants, cycads occurred in the Paleozoic Permian and prospered in the Mesozoic Jurassic until the Cretaceous extinction. It is an ancient plant dating back to about 1-2 billion years ago. Xingyi County, Shandong Province, Yang Ping found a commune about 4 square kilometers of the area has a long cycad. This cycads are similar to the Kunming cycad, but they need to be further identified.