Was excited to find this species. Not very good with ferns or their allies but I think this is L. clavatum.
Small plot of Common Clubmoss on the trail leading from Camp Huntington to St. Williams Church.
This soft Lycopodium clavatum or Running Clubmoss (on this site Running-pine) was only growing on one section of the trailside. It was lanky, growing 2-3' long, and rooted in places.
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.