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  2. Juglans regia - Wikipedia

    en.wikipedia.org/wiki/Juglans_regia

    Juglans regia, the common walnut [1] or Persian walnut [2] amongst other regional names, is a species of walnut. It is native to Eurasia in at least southwest and central Asia and southeast Europe, but its exact natural area is obscure due to its long history of cultivation.

  3. Juglans - Wikipedia

    en.wikipedia.org/wiki/Juglans

    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 ...

  4. Juglone - Wikipedia

    en.wikipedia.org/wiki/Juglone

    In 1926, instances of apple tree damage caused by both Juglans nigra and Juglans cinerea (butternut) trees were reported in northern Virginia. [4] Certain apple tree varieties displayed varying levels of resistance to walnut toxicity. In 1926, it was observed that walnut trees in alfalfa fields resulted in crop death, while grass remained ...

  5. Walnut - Wikipedia

    en.wikipedia.org/wiki/Walnut

    A walnut is the edible seed of any tree of the genus Juglans (family Juglandaceae), particularly the Persian or English walnut, Juglans regia. They are accessory fruit because the outer covering of the fruit is technically an involucre and thus not morphologically part of the carpel; this means it cannot be a drupe but is instead a drupe-like nut.

  6. 5 'nuts' that you thought were nuts that are definitely not nuts

    www.aol.com/article/2016/02/03/5-nuts-that-you...

    Walnuts are another seed masquerading as a nut. Their shells mature and harden inside of a fibrous, green husk, but it's common to extract the walnut prematurely for the English delicacy pickled ...

  7. Juglans nigra - Wikipedia

    en.wikipedia.org/wiki/Juglans_nigra

    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.

  8. Thousand cankers disease - Wikipedia

    en.wikipedia.org/wiki/Thousand_cankers_disease

    Thousand cankers is a recently described disease and its involvement in tree mortality apparently is also recent. The first published note involving black walnut die-offs that likely can be attributed to TCD occurred in the Espanola Valley of northern New Mexico in 2001.

  9. List of poisonous plants - Wikipedia

    en.wikipedia.org/wiki/List_of_poisonous_plants

    All parts of this tree, including the fruit, contain toxic phorbol esters typical of the Euphorbiaceae. Specifically the tree contains 12-deoxy-5-hydroxyphorbol-6gamma, 7alpha-oxide, hippomanins, mancinellin, sapogenin, and phloracetophenone-2, and 4-dimethylether is present in the leaves, while the fruits possess physostigmine. [134]