This is the branch of Red Birch, Betula nigra, showing the staminate aments as they appear in winter,…
This shows the erect strobile, or fruit, of the Red Birch, Betula nigra, (Keeler, 1915).
Also known as Betula occidentalis. The branch of a Red Birch tree, native to western North America.
Also known as Betula fontinalis. A species of birch native to North America.