Back عقدة بوتاموجيتون Arabic عقده بوتاموجيتون ARZ Potamogeton nodosus CEB Potamogeton nodosus Corsican Rdest uzlinatý Czech Dyfrllys loddon Welsh Knoten-Laichkraut German Potamogeton nodosus Spanish بارهنگ آبی گرهدار Persian Potamogeton nodosus French
| Longleaf pondweed | |
|---|---|
| |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Alismatales |
| Family: | Potamogetonaceae |
| Genus: | Potamogeton |
| Species: | P. nodosus
|
| Binomial name | |
| Potamogeton nodosus | |
| Synonyms | |
|
Potamogeton americanus | |
Potamogeton nodosus is a species of aquatic plant known by the common names longleaf pondweed[2] and Loddon pondweed.[3] It is native to Eurasia and the Americas, where it is widespread and can be found in water bodies such as ponds, lakes, ditches, and streams. This is a perennial herb producing a thin, branching stem easily exceeding a meter in maximum length. The submerged leaves are linear to widely lance-shaped and up to 15 by 4 centimetres (5.9 in × 1.6 in) in length and width, respectively, while the floating leaves achieve shorter maximum lengths and are ovate or elliptic.[4] Both floating leaves and submerged leaves are borne on long petioles, a distinguishing characteristic. The inflorescence is a spike of many small flowers arising from the water on a peduncle.
- ^ Lansdown, R.V. (2017). "Potamogeton nodosus". IUCN Red List of Threatened Species. 2017: e.T164227A67791533. doi:10.2305/IUCN.UK.2017-1.RLTS.T164227A67791533.en. Retrieved 25 November 2023.
- ^ NRCS. "Potamogeton nodosus". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 13 October 2015.
- ^ BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.
- ^ Hellquist, C. Barre; Thorne, Robert F.; Haynes, Robert R. (2012). Jepson Flora Project (ed.). "Potamogeton nodosus Long-Leaved Pondweed". Jepson eFlora. Regents of the University of California. Retrieved 25 November 2023.