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Juglans major (literally, the larger walnut) is a walnut tree which grows to 50 ft tall (15 m) with a DBH of up to 2 feet (0.61 m) at elevations of 1000–7000 ft in Texas, Oklahoma, New Mexico, Arizona, and Utah[1]. Common names include Arizona Walnut and Nogal.


In moister areas, the tree features a single, stout trunk; there are usually several slender trunks in drier situations.[2] The 8–14 in long pinnately compound leaves bear 9–15 lanceolate leaflets, 3/8–11/4 in wide by 2–4 in long. The small nut has a thick shell with deep grooves enclosing an oily, edible seed.

Where the range of J. major overlaps that of J. microcarpa, the two interbreed, producing many intermediate forms[3][4].

Written on February 23rd, 2012 , Botany, Forestry Tags:

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