Ground Cedar, Ground-cedar, Northern Running Pine, Trailing Ground-pine: Diphasiastrum complanatum (Synonyms: Lycopodium complanatum, Lycopodium complanatum var. complanatum)
Alaska Clubmoss, Alaskan Clubmoss, Sitka Clubmoss: Diphasiastrum sitchense (Synonyms: Lycopodium sabinaefolium, Lycopodium sabinaefolium var. sitchense, Lycopodium sitchense)
Pacific Clubmoss, Pacific Fir Moss: Huperzia haleakalae
Fir Clubmoss: Huperzia miyoshiana (Synonym: Huperzia chinensis)
Fir Clubmoss, Western Clubmoss: Huperzia occidentalis (Synonyms: Lycopodium selago, Lycopodium selago var. patens)
Bog Clubmoss, Marsh Clubmoss, Northern Bog Clubmoss: Lycopodiella inundata (Synonyms: Lycopodium inundatum, Lycopodium inundatum var. inundatum)
Alpine Clubmoss: Lycopodium alpinum (Synonym: Diphasiastrum alpinum)
Bristly Clubmoss, Interrupted Clubmoss, Stiff Clubmoss: Lycopodium annotinum (Synonym: Lycopodium annotinum var. pungens)
Common Clubmoss, Elk-moss, Ground Pine, Running Clubmoss, Running PineStag's Horn Moss: Lycopodium clavatum (Synonyms: Lycopodium clavatum var. clavatum, Lycopodium clavatum var. integerrimum, Lycopodium clavatum var. integrifolium, Lycopodium clavatum var. subremotum)
Prickly Tree Clubmoss, Tree Ground-Pine: Lycopodium dendroideum (Synonyms: Lycopodium hickeyi, Lycopodium obscurum, Lycopodium obscurum var. dendroideum)
One-cone Clubmoss, One-cone Ground-pine, Ptarmigan Clubmoss: Lycopodium lagopus