Selaginella scopulorum, which is considered by some authorities to be a subspecies of S. densa, enters California through the Cascades and inner northern Coast Ranges, being noted as collected in the mountains southwest
of Redding.
link to the Jepson Herbarium treatment
It is a wide ranging species that can be found northward into northern British Columbia. Apparently disjunct populations occur in Montana, Colorado, and New Mexico which may infer that this is not a legitimate species??

There are 3 additional pages:
Page 2
Page 3
Page 4