| Pentagramma | |
|---|---|
| Pentagramma triangularis | |
| Scientific classification | |
| Kingdom: | Plantae |
| Division: | Pteridophyta |
| Class: | Polypodiopsida |
| Order: | Polypodiales |
| Family: | Pteridaceae |
| Genus: | Pentagramma Yatsk., Windham & E.Wollenw. |
| Species | |
|
See text. |
|
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.[1] There are one to three species, with two species commonly described and named Pentagramma pallida and P. triangularis.[1]
The distribution of P. triangularis (goldback fern) extends from British Columbia through the southwestern United States into northwestern Mexico,[2] while P. pallida (pale silverback fern) is limited to the high mountains of California.