Regularity: Regularly occurring
Regularity: Regularly occurring
Global Range: Potamogeton vaginatus occurs primarily in northwestern North America and in Eurasia. In North America, it ranges from Quebec and Ontario west to British Columbia and north to Alaska; and from Canada south to Oregon, Utah, Colorado, and South Dakota.
Comments: Potamogeton vaginatus occurs primarily in alkaline waters in shallow-to-deep ponds, lakes, or streams. It tends to occur in areas of low wave action up to a depth of approximately 2 m.
Number of Occurrences
Note: For many non-migratory species, occurrences are roughly equivalent to populations.
Estimated Number of Occurrences: 81 to >300
Comments: Collected at close to 100 sites in North America. This species also occurs in Eurasia.
Life History and Behavior
Molecular Biology and Genetics
Barcode data: Stuckenia vaginata
Statistics of barcoding coverage: Stuckenia vaginata
Public Records: 1
Specimens with Barcodes: 6
Species With Barcodes: 1
National NatureServe Conservation Status
Rounded National Status Rank: N5 - Secure
Rounded National Status Rank: NNR - Unranked
NatureServe Conservation Status
Rounded Global Status Rank: G5 - Secure
Reasons: Potamogeton vaginatus occurs across a broad range that includes Eurasia as well as North America. It is somewhat less common than previously thought because all supposed populations of this species in the northeastern U.S. have been determined to be P. filiformis. P. vaginatus is very common in Saskatchewan, the Yukon, and the Northwest Territories.
Global Short Term Trend: Relatively stable to decline of 30%
Comments: P. vaginatus is threatened by water pollution by mining and agriculture, eutrophication of ponds and lakes, lakeside development, invasion of habitat by exotic plant species, and changes in hydrology.
Biological Research Needs: Perform taxonomic work and chemical analyses to resolve taxonomic discrepancies within the pondweed family.
Stuckenia vaginata (syn. Potamogeton vaginatus), commonly called sheathed pondweed, big sheathed pondweed or large-sheathed pondweed is a water plant species that grows in fresh and brackish water in Europe, Northern Asia (excluding China) and North America. Sheathed pondweed is rare, but is not in the 2012 IUCN Red List.
The flowers are wind pollinated and the seeds float. Tubers that are rich in starch are formed on the rhizomes. Reproduction can either be vegetative with tubers and plant fragments or sexual with seeds.
The main difference between Stuckenia and Potamogeton is that the stipule joins the leaf base; when it is pulled the sheath and stipule comes away, similar to a grass sheath and ligule. Stuckenia vaginata is 1–4 metres long and has longer stipule sheaths than e.g. Stuckenia pecinata and Stuckenia filiformis. Similar to them, it has long narrow linear leaves.
- Lindqvist, Charlotte; De Laet, Jan; Haynes, Robert R.; Aagesen, Lone; Keener, Brian R.; Albert, Victor A. (2006). "Molecular phylogenetics of an aquatic plant lineage, Potamogetonaceae". Cladistics 22 (6): 568–588. doi:10.1111/j.1096-0031.2006.00124.x. ISSN 0748-3007.
- Kaplan, Zdeněk (2008). "A Taxonomic Revision of Stuckenia (Potamogetonaceae) in Asia, with Notes on the Diversity and Variation of the Genus on a Worldwide Scale". Folia Geobotanica 43 (2): 159–234. doi:10.1007/s12224-008-9010-0. ISSN 1211-9520.
- Durnikin, D.A.; A.E. Zinovyeva (2013). "Singularity of Flora in Southern Water Basin of OB-Irtysh Interfluve of Western Siberia". World Applied Sciences Journal 22 (3): 337–341. doi:10.5829/idosi.wasj.2013.22.03.2676. Retrieved 24 April 2013.
- "Stuckenia vaginata". Species details. ITIS. Retrieved 24 April 2013.
Names and Taxonomy
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