About Quercus mongolica Fisch. ex Ledeb.
Quercus mongolica, commonly called Mongolian oak, is an oak species native to Japan, China, Korea, Mongolia, and Siberia. This species can reach a maximum height of 30 metres (98 feet). The flavono-ellagitannins known as mongolicin A and B occur in Quercus mongolica var. grosseserrata. Extrafloral nectaries have been recorded on the leaf buds of this oak species.