Western Clubmoss, Western Firmoss: Huperzia occidentalis (Synonym: Lycopodium selago var. patens)
Bog Clubmoss, Marsh Clubmoss, Northern Bog Clubmoss: Lycopodiella inundata (Synonym: Lycopodium inundatum)
Stiff Clubmoss, Interrupted Clubmoss: Lycopodium annotinum (Synonym: Lycopodium annotinum var. pungens)
Common Clubmos, Ground Pine, Running Pine, Elk-moss, Stag's Horn Moss: Lycopoium clavatum (Synonyms: Lycopodium clavatum var. clavatum, Lycopodium clavatum var. integerrimum, Lycopodium clavatum var. integrifolium, Lycopodium clavatum var. subremotum)
Ground-cedar, Trailing Ground-pine: Lycopodium complanatum (Synonyms: Diphasiastrum complanatum, Lycopodium complanatum var. complanatum)
Sitka Clubmoss, Alaskan Clubmoss: Lycopodium sitchense (Synonyms: Diphasiastrum sitchense, Lycopodium sabinaefolium, Lycopodium sabinaefolium var. sitchense, Lycopodium sitchense)