1. It was a piece of the heartwood from the river birch.

2. The river birch trees spread their silvery shade over the slate walkways.

3. Other landscape plants such as pin oak, river birch, holly and sweet gum are also susceptible to Chlorosis.

4. Recent Examples on the Web: Noun For example, the peeling bark of paperbark maples (Acer griseum) and river Birch trees (Betula nigra) can only be seen on the trunk and the oldest branches.