1 Graine Noyer d'Amérique, Noyer noir, Juglans nigra

American walnut, black walnut, nigra juglans |

The Noyer of America or Black Noyer (Juglans Nigra) is a large tree of the family of Juglandes, originally fromNorth America, widely cultivated for its Fruits, Son Bois and its ornamental qualities1. It is introduced all over the world. The two European countries which include the largest areas planted in black walnut are Hungary and Romania.^{[réf. nécessaire]}

1 seed - stratification in cold weather for 3 to 4 months - medium germination: 60 %

The tree reaches 30 meters high. The trunk forms a very slender bar, bare in the lower part. TheBark of very dark color has earned it its name " Black walnut .

Its leaves are large (about 60 cm long), deciduous, alternate, imparipennated compounds comprising 15 to 25 lanceolate leaflets with toothed edges.

The male flowers are numerous and combined in kittens while the female flowers are grouped in two.

The fruit are Drupes containing nuts 4 to 5 cm in diameter of subglobulous shape, with very hard rough shell.

The wood is heavy, homogeneous, dark brown in color and very resistant to humidity.

This species is originally from the half east of the United States, up to Texas and Minnesota, and Canada ([Ontario and Quebec). It is very abundant in Alleghanys Mounts and in the Mississippi river basin1.

It was introduced from 1629 in Europe, where it is planted for its quality wood and for its rapid growth1. The tree needs good sunshine and supports the frost up to -35 ° C1.

The most northern plantation is that of the Joly-de Lotbinière domain, in the region of Chaudière-Appalaches (Quebec, Canada), at Sainte -Croix. It was planted in 1882 by Henri-Gustave Joly de Lotbinière, which in fact, in fact the oldest plantation of a noble leafy essence in North America2

 Contents subject to the CC-BY-SA 3.0 license. Source : Article Black Noyer by Wikipedia in French (Authors)