yellowish-green catkins, Y 4-5 cm long, X 2 - 2.5 cm long, April
nutlets, in fruit resembling hops
Tipo de suelo:
likes calcareous soil
Resistencia al viento:
central and eastern part of the United States
Area de resistencia a las heladas:
Native to a great deal of the United States where it is valued as a producer of hard wood ('ironwood').
A remarkable feature is the very low branching: the trunk often grows no higher than half a metre. The pendulous side branches cause a colossal crown to be formed with the passage of time. The short trunk is grey-brown, grooved and flakes off in small plates. The trunk becomes steadily darker in older trees. Young twigs are hairy but they are bare at a later stage. The long ovoid to oval leaves have a double serrated edge and turn a remarkable colour of yellow in autumn. The base of the leaf is more heart-shaped than that of O. carpinifolia. The tree's flowers are in the form of yellowish-green male catkins 4 - 5 cm long and female flowers in small ears. The latter turn into fruit resembling a hop and are approx. 6 cm long.