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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.
A modern-day variety of walnuts grown California is the Serr walnut, developed by UC Davis professors Eugene F. Serr and Harold I. Forde. 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.
The Paradox Hybrid Walnut Tree was designated a California Historic Landmark (No.681) on May 29, 1959. The Paradox Hybrid Walnut Tree is located is in what is now the City of Whittier, California in Los Angeles County at 12300 Whittier Blvd, Whittier, Cal. George Weinshank worked with Professor Ralph Smith with the University of California in ...
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.
The tree has since gone on to become one of the oldest organisms in the world at what National Geographic projected to be 13,000 years old. Other estimates clock the self-cloning tree as up to ...
California's oldest tree, a Palmer's oak thought to be 13,000 to 18,000 years old, may be threatened by a proposed development, environmentalists say.
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 ...
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related to: southern california walnut tree facts information