Eastern Black Walnut (Trees and Shrubs of South Mountain Reservation)

Eastern Black Walnut

Juglans nigra

Summary ⁶

Juglans nigra, the eastern black walnut, is a species of deciduous tree in the walnut family, Juglandaceae, native to eastern North America. It grows mostly in riparian zones, from southern Ontario, west to southeast South Dakota, south to Georgia, northern Florida and southwest to central Texas. Black walnut is an important tree commercially, as the wood is a deep brown color and easily worked. Walnut seeds (nuts) are cultivated for their distinctive and desirable taste. Walnut trees are grown both for lumber and food.

Height 100–130 ft. Under forest competition, it develops a tall and straight trunk. When grown in an open area it has a short trunk and broad crown The leaves are pinnately compound and alternately arranged on the stem. They are 1–2 ft long, typically even-pinnate but there is heavy variation among leaves. The leaflets have a rounded base and a long pointed (acuminate) tip as well as having a serrated edge.[5] The leaves are overall dark green in color and are typically hairy on the underside. The fruit rpens during the summer/autumn into a spherical fruit (nut) with a brownish-green, semifleshy husk and a brown, corrugated nut. The whole fruit, including the husk falls in October; the seed is relatively small and very hard

There are two very large old black walnut trees in the large field near the first Tulip Springs parking lot.

Fontes e Créditos

(c) George Afghan, alguns direitos reservados (CC BY-NC), uploaded by George Afghan
(c) James Mickley, alguns direitos reservados (CC BY-NC), uploaded by James Mickley
(c) dogtooth77, alguns direitos reservados (CC BY-NC-SA), https://www.flickr.com/photos/53817483@N00/34653065245/
(c) Paul Marcum, alguns direitos reservados (CC BY-NC), uploaded by Paul Marcum
(c) Tom Norton, alguns direitos reservados (CC BY), uploaded by Tom Norton
Adaptado por Tom Pollard de uma obra de (c) Wikipedia, alguns direitos reservados (CC BY-SA), https://en.wikipedia.org/wiki/Juglans_nigra

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