I want to know more or less the history of ginkgo?
Answers: Ginkgos are an ancient plant species, dating back up to 270 million years (based on fossil record), which originally be found across the super-continents Pangaea and (subsequently) Laurasia. There are now merely very small populations of ginkgos found surrounded by the wild, contained by China.
Here is the informative Wikipedia page:
http://en.wikipedia.org/wiki/Gingko
ginkgo tree is deemed to be biologically the oldest tree contained by the world, a "living fossil.
In ancient Chinese Medicine, the ginkgo nuts were taken for asthma, bronchitis, heart dysfunction .
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