roundleaf birch Betulaceae Betula uber
Leaf:Alternate, simple, pinnately-veined, round or broadly ovate, singly or doubly serrated, 1 1/2 to 2 1/2 inches long; dark green above and paler below.
Flower:Species is monoecious; preformed male catkins are 1 1/2 to 2 1/2 inches long, pendant, and become much longer and yellow-green as they open in mid-spring; females are upright, 1 inch long, and light green in color.
Fruit:Cone-like aggregate of winged nutlets, 1 to 1 1/2 inch long, upright, ripen in late fall.
Twig:Slender, reddish brown, with numerous lenticels and a wintergreen odor when cut or chewed. Older twigs contain spur shoots. Buds are conical, sharp pointed, and green and brown.
Bark:When young it is dark reddish brown (almost black) with numerous horizontal, slender lenticels; eventually breaks up into small, dark, irregular plates.
Form:A small tree with a narrow crown, and slender branches; can reach up to 60 feet in height.