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The three species of walnuts most commonly grown for their seeds are the Persian (or English) walnut , originating from Iran, the black walnut – native to eastern North America – and the Japanese walnut, also known as the heartnut (J. ailantifolia). [6]
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 ...
The involucre may be scaly, spiny, leafy or tubular, depending on the species of nut. [5] Most nuts come from the pistils with inferior ovaries (see flower) and all are indehiscent (not opening at maturity). True nuts are produced, for example, by some plant families of the order Fagales.
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.
The Juglandaceae are a plant family known as the walnut family. They are trees , or sometimes shrubs, in the order Fagales . Members of this family are native to the Americas , Eurasia , and Southeast Asia .
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.
Jerusalem artichoke - specific species of sunflower with large, edible root. Lily Bulbs- several species in Lilium family; Oca - specific species of Oxalis, or Wood Sorrel with large edible root. Tobacco Root (species of Velerian, not actual tobacco) Wapato- several species of Sagittaria; Wild Onion- several native species, such as Ramps and ...
Some foods have always been common in every continent, such as many seafood and plants. Examples of these are honey, ants, mussels, crabs and coconuts. Nikolai Vavilov initially identified the centers of origin for eight crop plants, subdividing them further into twelve groups in 1935. [1]