This shows the pendulous strobiles, or fruit, of the Paper Birch, Betula papyrifera, (Keeler, 1915).
This shows the erect strobile, or fruit, of the Red Birch, Betula nigra, (Keeler, 1915).
This shows the erect strobile, or fruit, of the Sweet Birch, Betula lenta (Keeler, 1915).
This shows the pendulous strobiles, or fruit, of the White Birch, Betula populifolia, (Keeler, 1915).
This shows the erect strobile, or fruit, of the Yellow Birch, Betula lutea (Keeler, 1915).