Alnus
- common alder
Medium-sized tree with brown-black bark and woody fruiting catkins; leaves are hairy...
- grey alder
Native to Europe but introduced in America.
- seaside alder
Shrub or small tree of southeastern United States having soft light brown wood.
- white alder
Tree of western United States.
- red alder
Large tree of Pacific coast of North America having hard red wood much used for furni...
- speckled alder
Common shrub of Canada and northeastern United States having shoots scattered with...
- smooth alder
Common shrub of the eastern United States with smooth bark.
- green alder
Shrub of mountainous areas of Europe.
- green alder
North American shrub with light green leaves and winged nuts.
Also contains
- alder
Wood of any of various alder trees; resistant to underwater rot; used for bridges etc.