Egeria densa is also a larger, bushier plant with longer leaves. North European and Baltic Network on Invasive Alien Species NOBANIS (2016) Gateway to Information on Invasive Alien species in North and Central Europe. Much of the Flora and Fauna of the British Isles is found in abundance throughout the entire nation however some species are more particular in their habitat requirement. western waterweed (Elodea nuttallii) • Invasive • 1-3-5’ long, branched • Whorled, 3 leaflets (sometimes 4) • Produce seeds. Classified in the frog’s-bit family (Hydrocharitaceae), Elodea is native to the Americas and is also widely used as aquarium vegetation and laboratory demonstrations of cellular activities. Philotria canadensis (Michx.) Recommended Citation Hydrocharitaceae, Elodea canadensis, Michx.U. The fruit is an ovoid capsule, about 6 mm long containing several seeds that ripen underwater. Elodea canadensis (American waterweed or Canadian waterweed or pondweed) is a perennial aquatic plant, or submergent macrophyte, native to most of North America. 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. Anacharis canadensis var. The numerous green chloroplasts allow the cell to make its own food (by photosynthesis). There are 6 species of elodea that originate from North and South America. latifolia (Casp.) Other entries not found in or around the British Isles nor within the United Kingdom only have a basic data entry indicating the position of the species within the taxonomic structure. planchonii (Caspary) Vict. It was introduced into County Down, Ireland in about 1836, and appeared in Great Britain in 1841, spreading through both countries in ponds, ditches and streams, which were often choked with its rank growth.[13][10][11][14]. It is considered a circumpolar invasive plant; its native range extends from Florida to southern British Columbia. By Ben Dolbeare, Published on 08/07/67. This aquatic herb has stems that branch out between 20 and 30 cm in length, which tends to form dense monospecific stands that can cover hundreds of acres (DAISIE, 2009). 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. planchonii (Caspary) Vict. http://www.nobanis.org (accessed 2016). Centre for Agricultural Bioscience International CABI (2016) Invasive Species Compendium. Britton : Philotria linearis Rydb. Is generally a thinner species of Elodea. Elodea is available year round. and from the Lagan Canal near Lisburn, Northern Ireland.[8]. Scripta Botanica Belgica, 39, 1-89. Distribution of some submerged aquatic macrophytes in the Eglinton Canal, Galway; "First confirmed record of Elodea canadensis Michx. It flowers from May to October. Naturalis (2005-2016) Nederlands Soortenregister, version 2.0. http://www.nederlandsesoorten.nl (accessed 2016). Wallingford, UK: CAB International. I 0 S 8 p o 8 n s 3 3 o K r 5 J e 7 d J. Elodea Densa 5 Stems Oxygenating Live Pond Tropical Aquarium Plant 1 weight free ... Scott # 1870 - 1966 - ' Marine Flora, Elodea Canadensis Rich ' EUR 1.12. Class. Elodea canadensis var. datasets have provided data to the NBN Atlas for this species.. Browse the list of datasets and find organisations you can join if you are interested in participating in a survey for species like Elodea canadensis Michx. Scientific name Scientific name (unprocessed) Subspecies Species Genus Family Order Class Phylum Kingdom Identified to rank Name match metric Lifeform Common … From United States. It grows indefinitely at the stem tips, and single specimens may reach lengths of 3 m or more. 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