black alder, European alder
gray alder
red alder
yellow birch
resin birch
sweet birch
dwarf birch, shrub birch, bog birch
river birch
paper birch
European white birch
downy birch
bog birch
hazelnut, American hazelnut, hazel
common filbert
western hazel, beaked hazel, beaked hazelnut
eastern hophornbeam, hophornbeam