Red Alder trees grow to heights of 80 feet and is found near river banks and moist woods . Its bark produces a red dye.
Red Alder - Native Plants
Coastal Indians of BC used to eat the soft alder cambium tissue. It was also used for making smoked salmon, and in construction of canoe paddles. Alder has been also been used for the treatment of colds and stomach problems. Rubbing rotting alder wood can aid in relief of aching bones.
Another Look at Red Alder
Alder trees are quite often covered with lichen and is an indicator of air quality. Lichen is not able to grow in polluted atmospheres. Pencil Script licne (Graphis Scripta) is known to date back to 25 million years ago. It is white and contains black fruiting bodies.
Red & White Alder
This site has clear photos and descriptions of how to distinguish Red and White Alders.