Family: Betulaceae
[Alnus alnobetula var. crispa (Ehrh.) K.Koch, more..., Alnus crispa (Aiton) Pursh, Alnus crispa subsp. laciniata (Aiton) Pursh, Alnus crispa subsp. sinuata (Aiton) Pursh, Alnus crispa var. elongata (Aiton) Pursh, Alnus crispa var. harricanensis (Aiton) Pursh, Alnus crispa var. mollis (Aiton) Pursh, Alnus crispa var. stragula (Aiton) Pursh, Alnus mitchelliana M.A.Curtis ex A.Gray, Alnus mollis Fernald, Alnus viridis var. crispa (Vill.) DC., Alnus viridis var. fernaldii (Vill.) DC., Alnus X hultenii Murai, Betula crispa Aiton, Duschekia viridis (Chaix) Opiz]
