Wikipedia
Pentagramma
Pentagramma is a small genus of North American ferns. Until 1990 members of this genus were included in Pityrogramma, and agreement has not yet been reached regarding the species' taxonomy. There are one to three species, with two species commonly described and named Pentagramma pallida and P. triangularis.
The distribution of P. triangularis (goldback fern) extends from British Columbia through the southwestern United States into northwestern Mexico, while P. pallida (pale silverback fern) is limited to the high mountains of California.