Leaves, roundish, less than an inch long, crenately toothed, petioled, pale green and with small glands beneath, bright green above. Staminate catkins, single, 1/2 inch long; pistillate, longer, cylindrical. 1 to 4 feet high, with erect, smooth branches, dotted with resinous glands. June and July.
A Northern species, found in the mountains of New England, northern New York, Michigan, in the Rocky Mountains. and far to the northward. These shrubs have the aromatic fragrance peculiar to the birch. There are many species of the birch tree and shrub, confined to the northern temperate and arctic countries.