Scientific Name: – Juglans ailanthifolia
Juglans ailantifolia (synonyms J. cordiformis and J. sieboldiana and J. mandshurica var. sachalinensis), the Japanese Walnut (is a species of walnut native to Japan and Sakhalin. It is a deciduous tree growing to 20 m tall, rarely 30 m, and 40äóń80Śćcm stem diameter, with light grey bark. The leaves are pinnate, 50äóń90Śćcm long, with 11-17 leaflets, each leaflet 7äóń16Śćcm long and 3äóń5Śćcm broad. The whole leaf is downy-pubescent, and a somewhat brighter, yellower green than many other tree leaves. The male flowers are inconspicuous yellow-green catkins produced in spring at the same time as the new leaves appear. The female flowers have pink/ red pistils. The fruit is a nut, produced in bunches of 4-10 together; the nut is spherical, 3äóń5Śćcm long and broad, surrounded by a green husk before maturity in mid autumn.