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"National Agricultural Library. Originally from US Forest Service. United States, DC, Washington."   cc-by-nc-sa-3.0

Juglans nigra (Black Walnut) is a species of tree in the family Juglandaceae. They have a self-supporting growth form. They are native to The Contiguous United States, Eastern North America, North America, Canada, and United States. They have compound, broad leaves and yellow flowers. Individuals can grow to 32 m.

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EOL has data for 84 attributes, including:

Known occurrences, collected specimens and observations of black walnut. View this species on GBIF
"National Agricultural Library. Originally from US Forest Service. United States, DC, Washington."   cc-by-nc-sa-3.0