Genus HICORIA, Raf.

B. Bud scales many, overlapping, leaflets 3 to 9.

C. Buds small, 1/4 to 1/2 inch long; husk of nut thin.

D. Twigs and leaf stalks smooth. (H. glabra) PIGNUT

DD. Twigs and leaf stalks silvery pubescent. (H. villosa) PALE-LEAF HICKORY

CC. Buds large, 1/2 to 1 inch long, husk of nut thick.

D. Bark shaggy; twigs smooth.

E. Branchlets stout, orange red; nuts large, thick shelled. (H. laciniosa) BIG SHELLBARK

EE. Branchlets stout, grey; nuts small, usually thick shelled. (H. ovata) LITTLE SHELLBARK

EEE. Branchlets slender, reddish; nuts 4-angled, thin shelled.

(H. Carolinae-septentrionalis) SHAGBARK HICKORY

DD. Bark not shaggy; twigs downy. (H. alba) MOCKERNUT

BB. Bud scales few, not overlapping; leaflets 7 to 13.

C. Nuts elongated.

D. Kernel sweet.

E. Leaves silvery and lustrous beneath; nuts solitary, or few in a cluster; leaflets 7 to 11. (H. myristicoeformis) NUTMEG HICKORY

EE. Leaves not silvery beneath; nuts 3 to 10 in cluster; leaflets 13 to 15. (H. Pecan) PECAN

DD. Kernel bitter; leaflets 7 to 11, twigs and husks hairy. (H. Texana) BITTER PECAN

CC. Nuts not elongated; bitter.

D. Buds yellow; nuts smooth; leaflets 7 to 9. (H. mimina) BITTERNUT

DD. Buds red; nut angled; leaflets 9 to 13. (H. aquatica) WATER HICKORY