Pentagramma
| Pentagramma | |
|---|---|
| |
| Pentagramma triangularis | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Division: | Polypodiophyta |
| Class: | Polypodiopsida |
| Order: | Polypodiales |
| Family: | Pteridaceae |
| Subfamily: | Cheilanthoideae |
| 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 there has been considerable disagreement regarding the species' taxonomy.[1] In the most recent treatment, six diploid species are recognized.[2]
The distribution of P. triangularis (goldback fern) extends from British Columbia through the western United States into Baja California in northwestern Mexico.[3] Pentagramma maxonii occurs in New Mexico, Arizona, Sonora, Baja California Sur, California, and Baja California. All other species are restricted to Californian and Baja California.
Species
As of January 2020[update], the Checklist of Ferns and Lycophytes of the World recognized the following species:[4]
- Pentagramma glanduloviscida Schuettp. & Windham
- Pentagramma maxonii (Weath.) Schuettp. & Windham
- Pentagramma pallida (Weath.) Yatsk., Windham & E. Wollenw.
- Pentagramma rebmanii (Winner & M. G. Simpson) Schuettp. & Windham
- Pentagramma triangularis (Kaulf.) Yatsk., Windham & E. Wollenw.
- Pentagramma viscosa (Nutt. ex D. C. Eaton) Schuettp. & Windham
References
- ^ Yatskievych, George; Windham, Michael D.; Wollenweber, Eckhard (1990). "A Reconsideration of the Genus Pityrogramma (Adiantaceae) in Western North America". American Fern Journal. 80 (1): 9–17. doi:10.2307/1547301. JSTOR 1547301.
- ^ Schuettpelz, Eric; Pryer, Kathleen M.; Windham, Michael D. (2015-10-01). "A Unified Approach to Taxonomic Delimitation in the Fern Genus Pentagramma (Pteridaceae)". Systematic Botany. 40 (3): 629–644. doi:10.1600/036364415x689366. hdl:10161/10796. ISSN 0363-6445.
- ^ C.Michael Hogan, ed. 2010. ‘’Pentagramma triangularis’’ . Encyclopedia of Life.
- ^ Hassler, Michael; Schmitt, Bernd (November 2019). "Oeosporangium". Checklist of Ferns and Lycophytes of the World. 8.11. Retrieved 2020-01-01.
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External links
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