I've only found Lycopodium clavatum or Running Clubmoss twice before. This was only growing in one thick patch beside the trail.
Was excited to find this species. Not very good with ferns or their allies but I think this is L. clavatum.
Lycopodium clavatum (wolf's-foot clubmoss, stag's-horn clubmoss, or ground pine) is the most widespread species in the genus Lycopodium of the clubmoss family Lycopodiaceae.