https://npgallery.nps.gov/AssetDetail/19d2f0b42346492ba5a843c59ff57002
https://creativecommons.org/licenses/by-nc-sa/2.0/
Black walnut
Juglans nigra (black walnut) fruit at Rock Creek Park.
Photo © Phillip Merritt CC BY-NC-SA 2.0
Master Gardeners of Northern Virginia
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