shagbark hickory (Carya ovata)
Juglandaceae, the walnut family

How to recognize shagbark hickory. As members of the walnut family, hickories (genus Carya) have large, alternately arranged, pinnately compound leaves. The number of leaflets is only 5-7 (sometimes up to 9) compared with 11-23 leaflets seen on walnuts (genus Juglans).

Shagbark hickory has large 5-parted leaves.

Flowers and fruits. The trees are monoecious (unisexual flowers, both sexes borne on the same trees). The males are presented in branched catkins. The fruits are smooth one-seeded nuts that split open along 4 sutures.

Shagbark hickory male flowers are in branched catkins.
Female are in few-flowered clusters at branch tips.

Shagbark hickory fruits are about 1.5 inches wide, 4-ribbed, and thick-hulled.

shagbark hickory nut

Shagbark hickory nut.

Bark. The bark peels off  in long wide strips. This is only evident on mature trees though.

The eponymous shaggy bark of shagbark hickory.

In the winter. Shagbark hickory twigs are stout, with a true terminal bud covered with loose large busd scales. The leaf scars are large, alternately arranged, oval with with about a dozen bundle scars within.

Sharbark hickory twggies are biggies!

Where to find shagbark hickory. E. Lucy Braun, in The Woody Plants of Ohio (1961, 1989; The Ohio State University Press) tells us it is “Widely distributed in Ohio, and commonly associated with oaks in both dry and wet situations.”

Ooh, ooh, I have a question!

To what plant family does shagbark hickory belong; what are the two genera in that family, and what distinguishes the genera (one leaf trait, and one twig trait).

Shagbark hickory is a member of the Juglandaceae (walnut family). It contains walnuts (genus Juglans) and hickories (genus Carya). Both genera have alternate pinnately compound leaves; those of walnuts have a great many leaflets (15-23 leaflets) while hickories usually have only 5-11leaflets. Walnuts have chambered pith; hickory pith is continuous-homogenous.

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