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Juglans sigillata, common name iron walnut [2] (Chinese: 泡核桃, pao he tao), [3] is a species of tree in the walnut family Juglandaceae native to the eastern Himalayas and western China. The tree has been cultivated for its edible walnuts , and there have been at least 80 authorised or approved cultivars produced after successful ...
It is a deciduous tree growing to 20 m (66 ft) tall, rarely 30 m (98 ft), and 40–80 centimetres (16–31 in) stem diameter, with light grey bark. The leaves are pinnate, 50–90 cm (20–35 in) long, with 11–17 leaflets, each leaflet 7–16 cm (3– 6 + 1 ⁄ 2 in) long and 3–5 cm (1–2 in) broad.
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 major (literally, the larger walnut), also known as Arizona walnut, [1] is a walnut tree which grows to 50 ft tall (15 m) with a DBH of up to 0.61 metres (2 ft) at elevations of 300–2,130 m (1,000–7,000 ft) in Texas, Oklahoma, New Mexico, Arizona, and Utah. [4] It also occurs in Mexico as far south as Guerrero. [5]
From 1945-1968, their extensive walnut-breeding program created seedlings which exhibited desirable traits such early production, moderate tree vigor, pest and disease tolerance, and high nut quality. From 1,734 controlled cross walnut seedlings, Serr and Forde selected 10 new English walnut varieties for release in 1968.
Walnut tree species make up the genus Juglans, which belongs to the subtribe Juglandinae. Genera and species. Image Genus Living species Cyclocarya Iljinsk.
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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.