Juglans mandshurica Juglans is divided into Juglans mandshurica, Juglans mandshurica and Juglans mandshurica. For walnuts, because there are many people playing and the price is high, they belong to the nobility of walnuts, so the variety classification of walnuts is very specific. Juglans mandshurica, for one thing, has a large number and its cortex is difficult to compare with Juglans mandshurica. Juglans mandshurica has always been a common species, so there is no specific variety classification, so it can only be collectively called Juglans mandshurica.