Juglans mandshurica
Juglans mandshurica (), also known as Manchurian walnut, is a deciduous tree of the genus "Juglans" (section "Cardiocaryon"), native to the Eastern Asiatic Region (China, Russian Far East, North Korea and South Korea). It grows to about 25 m.

This species was first described by the Russian botanist Carl Johann Maximowicz, in "Bulletin de la Classe Physico-Mathématique de l'Académie Impériale des Sciences de Saint-Pétersbourg", which was published in 1856.

The leaves are alternate, 40–90 cm long, odd-pinnate, with 7–19 leaflets, 6–17 cm long and 2–7.5 cm broad (margin serrate or serrulate, apex acuminate). The male flowers are in drooping catkins 9–40 cm long, the wind-pollinated female flowers (April–May) are terminal, in spikes of 4 to 10, ripening in August–October into nuts, 3-7.5 × 3–5 cm, with densely glandular pubescent green husk and very thick shell.

The tree is exceptionally hardy (down to at least -45 °C), has a relatively short vegetation period compared to other walnuts, grows rapidly and is cultivated as an ornamental in colder temperate regions all over the Northern Hemisphere. (For example, it has been found to grow satisfactorily in Edmonton, Alberta, Canada.) The kernels of the nuts are edible, but small and difficult to extract. The timber is in use, but less valuable than that of English walnut or black walnut.

The Manchurian walnut contains and exudes much lesser quantities of allelopathic compounds (such as juglone) than other popular "Juglans" species and usually causes few significant allelopathic effects in cultivation.

"Juglans cathayensis", characterized by tomentose leaflets, producing more flowers per spike and growing south of the Yellow River, was sometimes recognized as a species separate from "J. mandshurica".

The Japanese Walnut (オニグルミ) is listed by some authorities as "Juglans mandshurica" var. "sachalinensis" (syn. "Juglans ailantifolia")
Q1131316
deciduous
Concept
Q2453469
Juglans
Concept
Q5329992
Eastern Asiatic Region
UNK
Q148
China
LOC
Q609176
Russian Far East
LOC
Q423
North Korea
LOC
Q884
South Korea
LOC
Q159
Russia
LOC
Q441
botanist
Concept
Q77640
Carl Johann Maximowicz
PER
Q33971
leaves
Concept
Q506
flower
Concept
Q199182
ornamental
Concept
Q46871
English walnut
Concept
Q852572
black walnut
Concept
Q900912
juglone
Concept
Q190334
allelopathic
Concept
Q7355
Yellow River
LOC
Q1655870
Japanese Walnut
Concept
Q1655870
Juglans ailantifolia
Concept
Q311361
Juglans mandshurica
Concept
Q311361
Juglans mandshurica
Concept
1856-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1856
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NUMBER
parent taxon
territory claimed by
field of work