Europe (United Kingdom, Ireland, Czech Republic, Germany, France, Denmark, Finland, Norway, Poland, Spain, Switzerland, Italy, Lithuania, Lithonia, Estonia), … Egeria densa is also a larger, bushier plant with longer leaves. The purpose of displaying all members of a specific genus is to allow the user to determine how many members of a genus are UK residents or UK visitors. Waterweed ( Elodea genus); the bubbles attached to leaves and stem were generated by photosynthesis. [9] It lives entirely underwater, the only exception being the small white or pale purple flowers which float at the surface and are attached to the plant by delicate stalks. planchonii (Casp.) Elodea canadensis is a dioecious, perennial, submerged aquatic macrophyte with elongated flexuous stems and long internodes which are clothed with whorls of sessile, minutely-serrate leaves and rooted from their nodes, typically in mud substrates. Kingdom: Plantae : Taxonomic Rank: Species : Synonym(s): Elodea brandegeae H. St. John : Elodea linearis (Rydb.) Europe has been particularly affected with the first record dating back as far as 1836. Runk Schoenberger—Grant Heilman/Encyclopædia Britannica, Inc. Elodea are herbaceous perennials that feature dark green leaves arranged in whorls of two to seven along the stem. [1][2][3] It has been introduced widely to regions outside its native range and was first recorded from the British Isles in about 1836. Ditch with a dense colony of flowering plants, Illustration showing leaf and flower detail, Hackney, P. Elodea (also known as anacharis in North America) is aquatic plant that belongs to the family of tape-grasses. Elodea canadensis, or Hydrilla verticillata, they are all within the same order. planchonii (Casp.) Each database record is assig It requires summer water temperatures of 10–25 °C and moderate to bright lighting. Search: SPECIES: Elodea canadensis | Occurrence records | NBN Atlas Wales INNS; ... Taxon. Distribution of some submerged aquatic macrophytes in the Eglinton Canal, Galway; "First confirmed record of Elodea canadensis Michx. Kingdom. nutallii. Individual specimen entries are published in the sample database supplied with The Compleat Botanica for species or varieties of this supra-generic taxon. http://ias.biodiversity.be (accessed 2016). Elodea brandegeeae H. St. John : Elodea ioensis Wylie : Elodea planchonii Casp. From United Kingdom. H. St. John – western waterweed P. Species Elodea schweinitzii (Planch.) The leaves are bright green, translucent, oblong, 6–17 mm long and 1–4 mm broad, borne in whorls of three (rarely two or four) round the stem. Caspary – South American waterweed P. Species Elodea canadensis Michx. Plants are usually dioecious (individuals bear either male or female flowers only) and produce seeds in ellipsoid or oval capsules. Conservation Biology 23:1526–1534. We suggest you upgrade to a modern browser. http://www.fcbn.fr/sites/fcbn.fr/files/ressource_telechargeable/fiche_-_elodea_canadensis_v2.pdf, http://www.eppo.int/INVASIVE_PLANTS/ias_lists.htm, https://secure.fera.defra.gov.uk/nonnativespecies/home/index.cfm, https://doi.org/10.1111/j.1523-1739.2009.01249.x, http://alienplantsbelgium.be/sites/alienplantsbelgium.be/files/tabel_2.pdf, Aronsson, Mora (2004) Thomas Karlssons Kärlväxtlista. planchonii (Caspary) Vict. Elodea canadensis var. The flowers have three small white petals; male flowers have 4.5–5 mm petals and nine stamens, female flowers have 2–3 mm petals and three fused carpels. Elodea spp. Farw. http://www.europe-aliens.org (accessed 2016). On names to expand them, and Oceania it grows indefinitely at the stem Tips, and Oceania difficult. Plants and for studies of photosynthesis of the volume of the methodology followed in establishing this see. 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