The ginkgo biloba tree, also known as the Maidenhair Tree, 'fossil tree', or 'living fossil', is a unique species with no living relatives. Fossils of this tree show that it has been in existence for more than 200 million years, making it the oldest surviving tree on earth. The tree originally comes from China, where it is known as yin-hsing, considered sacred among the Chinese monks. It is also found in Asia, America, Australia, and Europe, though how it got there is still a mystery.