- green alder, Alnus veridis crispa, Alnus crispa - North American shrub with light green leaves and winged nuts
--1 is a kind of alder, alder tree
--1 is a member of Alnus, genus Alnus - green alder, Alnus veridis - shrub of mountainous areas of Europe
--2 is a kind of alder, alder tree
--2 is a member of Alnus, genus Alnus