Carex roanensis
| Carex roanensis | |
|---|---|
| |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Clade: | Commelinids |
| Order: | Poales |
| Family: | Cyperaceae |
| Genus: | Carex |
| Subgenus: | Carex subg. Carex |
| Section: | Carex sect. Hymenochlaenae |
| Species: | C. roanensis
|
| Binomial name | |
| Carex roanensis | |
Carex roanensis is a species of sedge known by the common name Roan Mountain sedge. It is endemic to the eastern United States, where it can be found in the Blue Ridge, Ridge and Valley, and Central Appalachian ecoregions.[1] It was first collected on Roan Mountain in Tennessee in 1936.[2] It was not collected again for fifty years.[3] Now it is known from Georgia, Kentucky, North Carolina, Pennsylvania, Tennessee, Virginia, and West Virginia.[1]
This plant forms small clumps of stems up to 85 centimeters tall. The stem bases and leaf sheaths are tinged maroon. The leaf blades are hairy. The inflorescence contains a terminal spike and two to three lateral spikes. There has been some question as to whether this plant is a true species, or perhaps a hybrid.[3][4] Genetic analysis confirms that it is a species in its own right.[5]
This plant grows in forests at moderate or higher elevations, sometimes in wooded areas but more often in the open. It may grow alongside the similar Carex species C. aestivalis and C. virescens.[1]
References
[edit]- ^ a b c d "Carex roanensis Roan Mountain Sedge". NatureServe. 8 December 2021. Retrieved 23 November 2024.
- ^ Churchill, John A.; Wurdack, Kenneth (1986). "Carex roanensis rediscovered". Castanea. 51 (2): 149–151. JSTOR 4033362.
- ^ a b Carex roanensis. Archived October 26, 2011, at the Wayback Machine Center for Plant Conservation.
- ^ Carex roanensis. Flora of North America.
- ^ Smith, Tyler W.; Waterway, Marcia J. (2008). "Evaluating the taxonomic status of the globally rare Carex roanensis and allied species using morphology and amplified fragment length polymorphisms". Systematic Botany. 33 (3): 525–535. doi:10.1600/036364408785679824. ISSN 0363-6445.
External links
[edit]Further reading
[edit]- Smith, Tyler W.; Donaldson, James T.; Wieboldt, Thomas F.; Kauffman, Gary L.; Waterway, Marcia J. (2006). "The geographic and ecological distribution of the Roan Mountain Sedge, Carex roanensis (Cyperaceae)". Castanea. 71 (1): 45–53. JSTOR 20433879. Archived 2013-01-28 at archive.today