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Juglans nigra, the eastern American black walnut, is a species of deciduous tree in the walnut family, Juglandaceae, native to central and eastern North America, growing mostly in riparian zones. Black walnut is susceptible to thousand cankers disease , which provoked a decline of walnut trees in some regions.
Juglans hindsii, commonly called the Northern California black walnut and Hinds's black walnut, is a species of walnut tree native to the western United States (California and Oregon). [ 1 ] [ 2 ] [ 3 ] It is commonly called claro walnut by the lumber industry and woodworkers, and is the subject of some confusion over its being the root stock ...
Juglans californica, the California black walnut, also called the California walnut, or the Southern California black walnut, [1] is a large shrub or small tree (about 20–49 feet (6.1–14.9 m) [3]) of the walnut family, Juglandaceae, endemic to the Central Valley and the Coast Range valleys from Northern to Southern California.
Walnut trees are any species of tree in the plant genus Juglans, the type genus of the family Juglandaceae, the seeds of which are referred to as walnuts.All species are deciduous trees, 10–40 metres (33–131 ft) tall, with pinnate leaves 200–900 millimetres (7.9–35.4 in), with 5–25 leaflets; the shoots have chambered pith, a character shared with the wingnuts (Pterocarya), but not ...
Juglans microcarpa, known also as the little walnut, [2] Texas walnut, Texas black walnut or little black walnut (as it belongs to the "black walnuts" section Juglans sect. Rhysocaryon), is a large shrub or small tree (10–30 ft tall) which grows wild along streams and ravines in Texas, New Mexico, Oklahoma, and Kansas, and the northernmost states of Mexico.
Titled “Adaptation of Pasture and Forestland to Silvopasture and Black Walnut Systems in Southern Missouri," this new project will study the integration of pastureland and Black Walnut forests.
Thousand cankers disease (TCD) is a recently recognized disease of certain walnuts (Juglans spp.). The disease results from the combined activity of the walnut twig beetle (Pityophthorus juglandis) and a canker producing fungus, Geosmithia morbida. [1]
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