Corylus sieboldianaCorylus sieboldiana is a species of flowering plant in the family Betulaceae. It is native to several parts of Eastern Asia, Including Amur, Inner Mongolia, Khabarovsk, Manchuria, Korea and Japan.Distribution and habitatCorylus sieboldiana is a shrub that lives in mountainous forests and thickets and is native mostly to Korea and Japan.ClassificationCorylus sieboldiana is classified under the genus Corylus in the family Betulaceae.