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A single leaf of black walnut showing the leaflets with tapered tips
Photo credit: Larry Korhnak, University of Florida

A twig of black walnut that has been cut open to show the chambered pith
Photo credit: Larry Korhnak, University of Florida

The spherical fruit of black walnut with a thick husk
Photo credit: Larry Korhnak, University of Florida

Leaves of black walnut
Photo credit: Photo credit: Robert Vidéki, Doronicum Kft. | Bugwood.org