Ohio State Tree
Leaf: Opposite, palmately compound with 5 leaflets. Oval to obovate leaflets are 3 to 6 inches long with a serrated margin, rachis about as long as leaflets. Dark green above and paler below. Strong fetid odor when crushed.
Flower: Light yellow, in large, 4 to 7 inch, showy, upright clusters. Stamens are longer than petals. Appear in April to May.
Fruit: Prickly, leathery husk enclosing usually 1 smooth chestnut brown seed (1 to 1 1/2 inches in diameter). Borne on a stout stalk and mature in October.
Twig: Stout, with a large shield shaped leaf scar. Fetid odor when broken. Terminal buds are large, orangish brown with keeled scales. Opposite lateral buds are much smaller.
Bark: Initially smooth, ashy gray but later developing corky, scaly patches, becoming quite rough and darker gray.
Form: Upright, medium sized tree, 60 to 80 feet tall, 2 feet in diameter. Oblong
crown with pendulous up turning branches.
Photos courtesy: Michael Aust, John Baitey, Ctaude L. Brown, Bruce Bongarten,
Susan D. Day, Edward C. Jensen, Richard E. Kreh, Larry H. McCormick, Alex X.
Niemiera, John A. Peterson, Oana Popescu, John R. Seiter, David W. Smith, Kim
C. Steiner, James E. Ward, Rodney E. Will, Shepard M. Zedaker.
Text written by: John R. Seiter, Edward C. Jensen, Or John A. Peterson