The Ginkgo biloba or "tree of a thousand crowns (银杏yínxìng in Chinese) is the very symbol of strength and longevity. The name of "Trees miles ECU" is also explained by the appearance of its leaves become golden yellow in autumn and form a carpet of gold at his feet (wink to the color of our matou , Red Silver).

Engelbert Kaempfer, German physician and botanist stayed in Japan for 1690 to 1692 on mission for the Dutch East Indies Company. He was the first European to have made a description of this tree in his memory Amoenitatum exoticarum (published in 1712).

The Ginkgo latin name comes from the Japanese form ginkyō. Two Japanese researchers have shown why it has been transformed into g. Engelbert Kaempfer was from Lemgo, a small town in northern Germany. But in this region decides y g ([j] i wet). Adopted in June 1989, the official symbol of Tokyo is a piece of Ginkgo biloba as a sign of growth, prosperity, charm and tranquillity.