Lycopodium tristachyum Pursh, Fl. Amer. Sept.: 653. 1813

is basionym for Diphasiastrum tristachyum (Pursh) Holub in Preslia 47: 108. 1975

is basionym for Diphasium tristachyum (Pursh) Rothm. in Feddes Repert. Spec. Nov. Regni Veg. 54: 65. 1944

has orthographic variant Lycopodium tristachyon

Taxon for this name