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Elodea canadensis @
American Museum of Natural History, Plant Bug (1);
Global Biodiversity Information Facility (36294) [Botanical Society of the British Isles - Vascular Plants Database (10626); Dutch Vegetation Database (LVD) (6277); FlorKart - FlorenKartierung Gefaesspflanzen (3531); Environment Agency - Environment Agency Non-native Species records v1 (2446); Artdata (1901); Herbarium, Botany Unit, Finnish Museum of Natural History (H) (1317); Florabank1 - A grid-based database on vascular plant distribution in the northern part of Belgium (Flanders and the Brussels Capital region) (925); Northern Ireland Environment Agency - EHS Species Datasets (812); BSBI tetrad data for Ireland (797); National Invasive Species Database (794); Dutch Foundation for Applied Water Research (STOWA) - Limnodata Neerlandica (789); Observations du Conservatoire botanique national du Bassin parisien. (762); Botanical Society of the British Isles - Vascular Plants Database additions since 2000 (421); Derbyshire Biological Records Centre - Derbyshire Invasive Vascular Plants (INNS) 1900 - 2011 (414); Scottish Natural Heritage - Standing Waters Database (348); Bristol Regional Environmental Records Centre - BRERC October 2009 (300); Phanerogamic Botanical Collections (S) (292); Suffolk Biological Records Centre - Suffolk Biological Records Centre (SBRC) dataset (257); EPA River Biologists data (216); New Zealand National Plant Herbarium (CHR) (182); Inventaire National du Patrimoine Naturel (I067) : Flore d'Ille-et-Vilaine (155); Merseyside BioBank - North Merseyside Flowering Plants (verified) (153); Herbarium, Botanical Museum, University of Oulu, Finland (OULU) (134); South East Wales Biodiversity Records Centre - CCW Regional Data : South East Wales Non-sensitive Species Records (126); Vascular Plant Collection - University of Washington Herbarium (WTU) (118); Dorset Environmental Records Centre - Dorset Invasive Alien Plants - NBN South West Pilot Project Case Studies (115); Rotherham Biological Records Centre - Rotherham Biological Records Centre - Non-sensitive Records from all taxonomic groups (115); (112); Botanical Society of the British Isles - Changing Flora of Glasgow 1982-2000 (106); Biological and palaeontological collection and observation data MNHNL (100); Vanninfo Øvrige arter (97); North & East Yorkshire Ecological Data Centre - North and East Yorkshire Ecological Data Centre - Non-sensitive Records from all taxonomic groups. (94); Vascular Plant Herbarium, Oslo (O) (92); CONN (91); Hertfordshire Natural History Society Flora Group - Hertfordshire Flora Survey Records 1987-2005 (90); Consortium of California Herbaria (90); Taxa (84); The Flora of County Waterford (80); Shire Group of Internal Drainage Boards - Shire Group IDB species data 2004 to present (76); Botany (UPS) (66); Staffordshire Ecological Record - SER Site-based Surveys (63); University of British Columbia Herbarium (UBC) - Vascular Plant Collection (61); Herbarium of Oskarshamn (OHN) (54); Marie-Victorin Herbarium (MT) (52); Environmental Records Information Centre North East - ERIC North East non-sensitive species records (51); Vascular Plant Collection (50); Scottish Wildlife Trust - Commissioned surveys and staff surveys and reports for SWT reserves. (46); Sheffield Biological Records Centre - Sheffield Biological Records Centre- Non-sensitive Records from all taxonomic groups. (45); National Trust - Wicken Fen nature reserve species data held by The National Trust (45); Botany Vascular Plant Collection (44); Canadian Museum of Nature Herbarium (43); Atlas des plantes vasculaires de Lorraine (41); Biologiezentrum Linz (37); NatureServe Network Species Occurrence Data (35); UCJEPS TAPIR Provider (34); Peabody Botany DiGIR Service (34); NSW herbarium collection (33); Irish vascular plant data 1999-2009 (33); University Museums of Norway (MUSIT) (33); University of Alberta Museums, Vascular Plant Herbarium (28); Wetland Inventory (NV) (28); Missouri Botanical Garden (27); Vascular plant collection of Jyvaskyla University Museum (27); Inventaire National du Patrimoine Naturel (I093) : Flore du Massif Armoricain (23); Artsobservasjoner (23); California State University, Chico (21); The Flora of County Clare (21); Countryside Council for Wales - Freshwater Site Visits (20); E. C. Smith Herbarium (ACAD) (19); Dorset Environmental Records Centre - Dorset SSSI Species Records 1952 - 2004 (Natural England) (19); NMNH Botany Collections (18); Vascular Plant Herbarium, Trondheim (TRH) (18); Shropshire Ecological Data Network - Shropshire Ecological Data Network Database (17); Thames Valley Environmental Records Centre - Local Wildlife Site Surveys Berkshire (16); Scottish Natural Heritage - The ecology of Najas flexilis (Slender naiad) (15); Pond Conservation - National Pond Monitoring Network collated pond survey data for Great Britain 1972 to 2007 (14); Field Museum of Natural History (Botany) Seed Plant Collection (14); Lund Botanical Museum (LD) (14); Wiltshire and Swindon Biological Records Centre - Wiltshire & Swindon Site-based Survey Records (14); BioFokus (14); Green Plant Herbarium (TRT) (14); Colorado State University Herbarium (13); The Norwegian Species Observations Service - Botany (13); Herbier Louis-Marie (QFA) - Collection de plantes vasculaires (12); Irish vascular plant data 2011 (11); Herbarium, Centre for Biodiversity, University of Turku, Finland (TUR) (11); Herbarium BSG Vascular Plants (11); Sistema de Información de la vegetación Ibérica y Macaronésica (10); Royal Botanical Gardens Herbarium (9); Herbarium (UNA) (9); Fundación Biodiversidad, Real Jardín Botánico (CSIC): Anthos. Sistema de Información de las plantas de España (9); University of Manitoba Herbarium (WIN) - Vascular Plant Collection (8); Scottish Natural Heritage - Survey of slender naiad, Najas flexilis, in Loch of Butterstone and Loch of Craiglush (8); Australian National Herbarium (CANB) (8); Fundaci�n Miguel Lillo - Colecci�n Fanerog�mica (8); Scottish Natural Heritage - The occurrence and distribution of Najas flexilis (Slender naiad) in Loch of Craiglush, Loch of the Lowes and Loch of Butterstone (7); Staffordshire Ecological Record - SER Species-based Surveys (7); UA Herbarium (7); Herbarium WRSL, Flora of the Silesia (6); Herbarium Senckenbergianum (FR) (6); Phanerogams herbarium specimens (6); Base de datos de plantas vasculares del País Vasco: ARAN-EH (6); Nijmegen Natural History Museum (NL) - Herbarium (6); New Mexico Biodiversity Collections Consortium database (6); CAS Botany (BOT) (5); Leiner-Herbar Konstanz (5); Dr Francis Rose Field Notebook Project - Field Notebook Records of Dr Francis Rose 1950's to 1990's (5); Specimen Database of Colorado Vascular Plants (5); Herbarium specimens (5); Thames Valley Environmental Records Centre - Local Wildlife Site Surveys Oxfordshire (5); Vascular plant herbarium, Agder naturmuseum og botaniske hage (5); Vascular Plants, The Norwegian University of Life Sciences (NLH) (5); Tiroler Landesmuseum Ferdinandeum (4); Herbier de Strasbourg (4); Universität Salzburg (4); Inventaire National du Patrimoine Naturel (I057) : Flore du Limousin (4); SANT herbarium vascular plants collection (4); Scottish Borders Biological Records Centre - SWT Scottish Borders Local Wildlife Site Survey data 1996-2000 - species information (4); Aranzadi Zientzi Elkartea (4); Herbarium (3); Plant observations from Białowieża National Park (3); National System of Protected Areas in Poland - Plants (3); (3); Royal Horticultural Society - RHS monitoring of native and naturalised plants and animals at its gardens and surrounding areas (3); Herbarium of The New York Botanical Garden (3); Dataflos (3); EcoRecord - Dr Ellen Pisolkar's Freshwater Invertebrate Surveys 1991 to 2008 (3); Herbarium GJO (3); Herbarium WU (3); Real Jardin Botanico (Madrid), Vascular Plant Herbarium (MA) (3); Online Atlas of vascular plants 2012-2020 (3); USU-UTC Specimen Database (3); Database Schema for UC Davis [Herbarium Labels] (3); Merseyside BioBank - North Merseyside Flowering Plants (unverified) (3); Botany registration database by Danish botanists (3); Staatliches Museum für Naturkunde Stuttgart, Herbarium (3); Ireland's BioBlitz 2012 (2); UCBG TAPIR Provider (2); The AAU Herbarium Database (2); Ireland's BioBlitz 2011 (2); Garten J. Scherrer (Lachen-Speyerdorf) (2); Royal Botanic Gardens, Kew (2); Fundación Carl Faust: Herbario del Jardí Botànic Marimurtra: HMIM (2); Herbarium (Åbo Akademi), Centre for Biodiversity, University of Turku (TURA) (2); Herbarium Berolinense (2); Natural History Museum, Vienna - Herbarium W (2); National Trust - Hatfield Forest species data held by The National Trust. (2); Schulprojekt (Bremen) (2); RBGE Herbarium (E) (2); Bishop Museum Natural Sciences Data (2); Universidad de Oviedo. Departamento de Biología de Organismos y Sistemas: FCO (2); Herbario de la Universidad de Salamanca: SALA (2); Plant specimens depodited in Osaka Museum of Natural History, Japan. (2); Universidad de Oviedo. Departamento de Biología de Organismos y Sistemas: FCO-Briof (2); Ökostation (Freiburg) (1); Stadtpark Sulzbach-Rosenberg (1); Artenvielfalt am Eich-Gimbsheimer Altrhein (1); National Trust for Scotland - NTS Properties Species Records 1800-2013 (1); inatura - Erlebnis Naturschau Dornbirn (1); Botanical collections of the University of Tartu (1); KARSTLANDSCHAFT SÜDHARZ - VOM GIPSABBAU BEDROHT (Grenzstreifen am Röseberg) (1); Bergkamen- Bergehalde Großes Holz (1); Triebesbach (Zeulenroda-Triebes) (1); Colección de Monocotiledóneas Mexicanas (UAM-I) (1); Vascular Plants, Field notes, Oslo (O) (1); Stadtgebiet (Dannenberg) (1); Truppenübungsplatz Panzerkaserne Böblingen (1); Langenberger Forst am Ochsenweg/ Niebüll-Leck (1); NSG Berschau - Auengebiet (Neustadt / Wied) (1); TestWat - Macroinvertebrates and macrophytes of freshwater bodies in Flanders, Belgium (1); Plantae, TAIF (Taiwan e-Learning and Digital Archives Program, TELDAP) (1); Emporia State University Herbarium (1); Natural History Museum Maastricht (NL) - Herbarium (1); Vascular Plants, Field notes, Agder naturmuseum (KMN) (1); Quarrendorfer Landschaftsschutzgebiet (1); Frohlinder Mühlenbach (Dortmund-Kirchlinde) (1); Neckartalsüdhang (Horb) (1); Herbarium specimens (1); Rund um den Hainbergsee (1); Naturhistorisches Museum Mainz, Botanical Collection (1); Teich im Wald zwischen Böblingen und Schönaich (1); Südwestlich der Parkwiesen (1); Herbarium specimens - Harmas de J. H. Fabre (1); UAM Herbarium (ALA), Vascular Plant Collection (Arctos) (1); Spreewaldfließe und Feuchtwiese bei Lübbenau (1); Flora of Słowiński National Park, Poland (1); GEO-Hauptveranstaltung (Duisburg) (1); Nationaal Herbarium Nederland (1); Institut Botanic de Barcelona, BC (1); Schulhof und Anlagensee in Nellingen (1); Artenvielfalt im Beckerbruch (Dessau) (1); Priest Pot species list, Cumbria, Britain (1); Rund ums Cani (1); WAHerb (1); Schulgelände des Schulzentrums am Himmelsbarg (1); Issumer Fleuth (1); National Trust - Ickworth species data held by The National Trust. (1); Geschützter Landschaftsbestandteil - GLB "Troppach" (1); Alien Species in Poland - Plants (1); Selz-Renaturierung (Hahnheim/Sörgenloch) (1); New Zealand Biodiversity Recording Network (1); Herbarium specimens (1); Harvard University Herbaria (1); Kremmer Luch (1); Humber Environmental Data Centre - Humber Environmental Data Centre - Non Sensitive Records from all taxonomic groups (1); Universidad de Navarra, Herbarium: PAMP-Vascular Plants (1); Philosophenwald und Wieseckaue in Gießen (1); Colección de Herbario (1); NABU-Auerochsenweide (1); Draubiotop Lavamünd (1); GEO Hauptveranstaltung Tirol (Innsbruck) (1); PRECIS (1); Herbarium GZU (1); An der Ohm, (Wettsaasen) (1) accessed through the GBIF Data Portal. Each record tells when. See dataset links for citations & terms of use.];
iNaturalist (386);
Missouri Botanical Garden (27);
Plants Database, United States Department of Agriculture (55);
Western Kentucky University (3)