Ginkgo (Ginkgo biloba)

also known as the White Fruit Tree. Naked plants, Ginkgo. China's unique tree species, listed as China's secondary protection plants. Large deciduous trees, 30
high

40
meters. Leaf fan-shaped, long branches on each other, clusters on short branches, leaf veins binary. Male and female plants, male flowers into a sagging softflower sequence; female flowers with long handle, top with
2
embryo beads, seed nucleo-like, outer cortical flesh, when ripe there is a spicy smell, the middle seed white bone, the inner skin thin, red-brown. Seeds have
2
leaves. Ginkgo is one of the oldest living plants on earth today. As early as more than
200 million years ago, in addition to the Antarctic and near the equator, there are several species all over the world, through the Fourth Age glaciers, most species have been extinct, only one species of Ginkgo survived, so there are
"living fossils", "relic plants" called. Only Tianli Mountain in Zhejiang province has wild ginkgo trees. Fulushan, Shandong Province, still preserves one of the oldest cultivated ginkgo trees,
24.7
meters high,
8
people can hold together, the age of the tree is about
3,000
years old. Ginkgo is an excellent garden green tree species. Wood is soft, dense texture, shiny, is a precious architectural, craft carving materials. Kind of renren into medicine, has the effect of moisturizing lung flat wheezing, blood diuretic, but also can be fried, rich in nutrition, but contains a small amount of cyanide hydroic acid, should not eat more. The leaves contain α
-
ethylene, a variety of
organic
acids and flavonoids
compounds
, which have antibacterial and insecticidal effects.