original link:
http://Apiaceae.github.io/blog/2009/03/24/%E6%A4%8D%E7%89%A9%E7%A7%91%E5%AD%A6%E5%90%8D%E7%A7%B0%E7%9A%84%E5%90%AB%E4%B9%89%E6%98%AF%E4%BB%80%E4%B9%88-%E5%88%86%E7%B1%BB%E5%AD%A6%E5%8D%B1%E6%9C%BA%E8%AE%BA%E5%9D%9B/
written by Hooker
posted at http://Apiaceae.github.io