Pith is chambered and colored. Buds have few scales.
Flowers are monoecious.
Male flowers are borne in long catkins. Female flowers are rounded and have conspicuous, red-fringed stigmas. Species Leaf scar has a hairy, felt-like margin on the upper edge of the leaf scar. Pith is dark brown in color and chambered after the first season. Bark is gray and deeply fissured.