Ginkgo - The Ginkgo Tree Ginkgo biloba Ginkgoaceae...

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The Ginkgo Tree Ginkgo biloba Ginkgoaceae Maidenhair tree 50 Million years ago, Ginkgo trees ranged throughout temperate regions of the world, including much of what is now the sagebrush desert of central Washington*. One species, Ginkgo biloba , native to southeast China, survived the millennia, preserved for its majestic beauty in Asian gardens; all others went extinct. Even this species, Ginkgo biloba , is no longer found outside of cultivation. When English botanists "discovered" the Ginkgo in Asia, they brought samples back to Europe, where its value for cultivation was immediately recognized. Ginkgos have been making their way back into the world's flora ever since as much prized street and lawn trees. The Ginkgo is a broad-leafed deciduous tree. The fan-shaped leaves are produced in clusters on short branches, or spur shoots, along the longer branches of the tree. The leaves are a delicate soft green throughout the late spring and summer months. Their fall color is a brilliant gold. In Washington, the Ginkgo typically loses its leaves at Halloween. Look closely at the vein pattern of the leaves. Starting at the petiole, or leaf stalk, note how the veins continuously divide into two's. This vein pattern, called dichotomous venation, is unique to the Ginkgo tree. Other broad leafed plants have one of three common vein patterns: palmate, where the main veins radiate from a common point at the base of the leaf, such as
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Ginkgo - The Ginkgo Tree Ginkgo biloba Ginkgoaceae...

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