Sagittaria platyphylla explained

Sagittaria platyphylla, the delta arrowhead, broad-leaf arrowhead or delta duck-potato, is a plant species native to the eastern United States.

Description

Sagittaria platyphylla is a perennial herb up to 1500NaN0 tall, producing underground corms (similar to tubers). The plant reproduces by means of stolons as well as seeds. Some leaves are totally submerged, others emergent (raising above the surface of the water). Submerged leaves have flattened petioles but no true blades. Emergent leaves have ovate to elliptical blades up to 170NaN0 long. Inflorescence is a raceme with 3–9 whorls of flowers. Flowers are white, up to 2abbr=onNaNabbr=on in diameter.[1] [2] [3] [4] [5] [6] [7]

Distribution and habitat

The core of its range extends from central Texas to the Florida Panhandle north to southern Illinois. It is an emergent aquatic plant found in ponds, lakes and slow-moving streams.[8] [9]

As an ornamental it has also been spread to other locations.[10] Isolated populations have been reported from Washington state, Missouri, Kansas, Ohio, Kentucky, Pennsylvania, West Virginia, eastern Virginia, North and South Carolina and eastern Georgia, Nuevo León, Michoacán and Panamá. It has also become a noxious weed in Australia.[11] On August 6, 2015 S. platyphylla was found for the first time in China, specifically in the Yangtze River Basin. This detection was in an irrigation ditch in Zhangjiashai, Wuhan, Hubei, PRC. Other detections have continued through at least 2019 demonstrating its establishment in provinces of the middle and lower Yangtze. It presents a significant threat to the ecology and economy of the Yangtze area, especially to agricultural irrigation.

Notes and References

  1. Web site: Sagittaria platyphylla in Flora of North America @ efloras.org . 2017-01-30 . www.efloras.org.
  2. Web site: Image. www.tropicos.org. 2017-01-30.
  3. Haynes, R. R. & L.B. Holm-Nielsen. 1994. The Alismataceae. Flora Neotropica 64: 1–112.
  4. Czerepanov, S. K. 1981. Sosudistye Rasteniia SSSR 509 pages. Nauka, Leningradskoe Otd-nie, Leningrad.
  5. Correll, D. S. & M. C. Johnston. 1970. Manual of the Vascular Plants of Texas i–xv, 1–1881. The University of Texas at Dallas, Richardson
  6. Wunderlin, R. P. 1998. Guide to the Vascular Plants of Florida i–x, 1–806. University Press of Florida, Gainesville.
  7. Godfrey, R. K. & J. W. Wooten. 1979. Aquatic and Wetland Plants of Southeastern United States Monocotyledons 1–712. The University of Georgia Press, Athens
  8. http://bonap.net/MapGallery/County/Sagittaria%20platyphylla.png BONAP (Biota of North America Project) floristic synthesis, Sagittaria platyphylla
  9. Correa A., M.D., C. Galdames & M. Stapf. 2004. Catálogo de las Plantas Vasculares de Panamá 1–599. Smithsonian Tropical Research Institute, Panama.
  10. Wang . Hui . Xiao . Keyan . Wu . Zhigang . Chen . Jianfeng . Xiong . Wen . Wang . Zhengxiang . Wang . Qiang . Zhu . Hong . Bowler . Peter . 2020 . Delta arrowhead (Sagittaria platyphylla) in the Yangtze River: an invasive aquatic plant and the potential ecological consequences . BioInvasions Records . Regional Euro-Asian Biological Invasions Centre Oy (REABIC) . 9 . 3 . 618–626 . 10.3391/bir.2020.9.3.17 . 2242-1300 . free.
  11. http://www.weeds.org.au/cgi-bin/weedident.cgi?tpl=plant.tpl&state=nsw&s&region=ml&card=W13 Australian Weeds Committee, Weed Identification Guide, Sagittaria platyphylla

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