Pentagramma
Appearance
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
- 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. ISSN 0363-6445.
- ^ C.Michael Hogan, ed. 2010. ‘’Pentagramma triangularis’’ . Encyclopedia of Life.
External links