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Potamogeton crispus @
BOLD (13);
Systematic Mycology and Microbiology Laboratory (1);
Chinese Virtual Herbarium (7);
Botanical Exploration in Myanmar (1);
Global Biodiversity Information Facility (22385) [Botanical Society of the British Isles - Vascular Plants Database (8038); Dutch Vegetation Database (LVD) (4218); Florabank1 - A grid-based database on vascular plant distribution in the northern part of Belgium (Flanders and the Brussels Capital region) (1396); Dutch Foundation for Applied Water Research (STOWA) - Limnodata Neerlandica (1203); Observations du Conservatoire botanique national du Bassin parisien. (1072); Artdata (669); Plant (NSMK-PL) (428); BSBI tetrad data for Ireland (422); National Science Museum of Korea Plant (389); Phanerogamic Botanical Collections (S) (353); Botanical Society of the British Isles - Vascular Plants Database additions since 2000 (273); Suffolk Biological Records Centre - Suffolk Biological Records Centre (SBRC) dataset (246); EPA River Biologists data (223); Scottish Natural Heritage - Standing Waters Database (214); Northern Ireland Environment Agency - EHS Species Datasets (206); Inventaire National du Patrimoine Naturel (I067) : Flore d'Ille-et-Vilaine (196); Bristol Regional Environmental Records Centre - BRERC October 2009 (194); Herbarium, Botany Unit, Finnish Museum of Natural History (H) (160); Plant specimens depodited in Osaka Museum of Natural History, Japan. (146); Fundación Biodiversidad, Real Jardín Botánico (CSIC): Anthos. Sistema de Información de las plantas de España (140); CONN (137); kna_plant (104); kna_plant (104); Plant (104); South East Wales Biodiversity Records Centre - CCW Regional Data : South East Wales Non-sensitive Species Records (101); Sistema de Información de la vegetación Ibérica y Macaronésica (94); Shire Group of Internal Drainage Boards - Shire Group IDB species data 2004 to present (92); Consortium of California Herbaria (83); Taxa (76); Herbarium of Oskarshamn (OHN) (73); Botany (UPS) (72); Vascular Plant Herbarium, Oslo (O) (71); NSW herbarium collection (70); Hertfordshire Natural History Society Flora Group - Hertfordshire Flora Survey Records 1987-2005 (70); New Zealand National Plant Herbarium (CHR) (69); PRECIS (64); Vascular Plant Collection - University of Washington Herbarium (WTU) (54); Precis Plant Data (53); Missouri Botanical Garden (52); Plant Systematics Laboratory, Ajou University, Korea (50); North & East Yorkshire Ecological Data Centre - North and East Yorkshire Ecological Data Centre - Non-sensitive Records from all taxonomic groups. (50); South Australia Flora Observations (49); Botany Vascular Plant Collection (49); Vascular Plant Specimen Database of Kanagawa Prefectural Museum of Natural History (48); Plant Specimens of Kurashiki Museum of Natural History (47); Ibaraki Nature Museum, Vascular Plants collection (47); Biological and palaeontological collection and observation data MNHNL (47); Merseyside BioBank - North Merseyside Flowering Plants (unverified) (47); Rotherham Biological Records Centre - Rotherham Biological Records Centre - Non-sensitive Records from all taxonomic groups (44); Herbarium WRSL, Flora of the Silesia (42); Atlas des plantes vasculaires de Lorraine (40); Biologiezentrum Linz (39); Real Jardin Botanico (Madrid), Vascular Plant Herbarium (MA) (39); University Museums of Norway (MUSIT) (38); Lund Botanical Museum (LD) (35); OEH Atlas of NSW Wildlife (35); Australian National Herbarium (CANB) (33); Base de datos de plantas vasculares del País Vasco: ARAN-EH (32); Botanical Society of the British Isles - Changing Flora of Glasgow 1982-2000 (30); Nationaal Herbarium Nederland (30); PRECIS (KwaZulu-Natal Herbarium) (29); Vascular plant specimens of Akita Prefectural Museum (27); Herbario de la Universidad de Salamanca: SALA (27); Kochi Prefectural Makino Botanical Garden (26); RBGE Herbarium (E) (25); Scottish Wildlife Trust - Commissioned surveys and staff surveys and reports for SWT reserves. (25); (24); National Trust - Wicken Fen nature reserve species data held by The National Trust (24); Flora acuática vascular de las regiones hidrológicas R66 (Lagos Cráter del Nevado de Toluca) y R67 (Río Amacuzac-Lagunas de Zempoala), México (23); Vascular plants collection of Hiratsuka City Museum (22); Herbarium Specimens of Tokushima Prefectural Museum, Japan (22); Vascular collection herbarium database in Extremadura (22); MEXU/Colección de Plantas Acuáticas (22); Vascular Plant Collection (21); Environmental Records Information Centre North East - ERIC North East non-sensitive species records (21); Vascular plants database of Atugi City Museum (20); SANT herbarium vascular plants collection (20); Herbarium Specimens of Museum of Nature and Human Activities, Hyogo Pref., Japan (19); Inventaire National du Patrimoine Naturel (I093) : Flore du Massif Armoricain (19); The Flora of County Waterford (19); Gunma Museum of Natural History, Vascular Plant Specimen (19); Staffordshire Ecological Record - SER Site-based Surveys (19); The Flora of County Waterford (19); Catálogo Florístico Histórico de Navarra. Gobierno de Navarra (18); FKSE-Herbarium specimens of Faculty of Symbiotic Systems Science, Fukushima University, Japan (18); Herbarium, Botanical Museum, University of Oulu, Finland (OULU) (18); California State University, Chico (17); Vascular Plants, Observations, Oslo (O) (17); Marie-Victorin Herbarium (MT) (16); Royal Botanical Gardens Herbarium (16); Herbarium BSG Vascular Plants (16); Herbarium (15); NMNH Botany Collections (15); Sheffield Biological Records Centre - Sheffield Biological Records Centre- Non-sensitive Records from all taxonomic groups. (15); Inventaire National du Patrimoine Naturel (ONF) : Données ONF faune-flore-fonge (15); UCJEPS TAPIR Provider (14); Vascular Plant Herbarium, Trondheim (TRH) (14); Biodiversidad acuática del río Amacuzac, Morelos, México. Plantas vasculares (14); Generalitat Valenciana. Banco de Datos de la Biodiversidad de la Comunitat Valenciana (13); Herbarium (UNA) (13); Wiltshire and Swindon Biological Records Centre - Wiltshire & Swindon Site-based Survey Records (13); Green Plant Herbarium (TRT) (13); TestWat - Macroinvertebrates and macrophytes of freshwater bodies in Flanders, Belgium (12); Pond Conservation - National Pond Monitoring Network collated pond survey data for Great Britain 1972 to 2007 (11); Vascular Plants, Field notes, Oslo (O) (11); Dataflos (11); Shropshire Ecological Data Network - Shropshire Ecological Data Network Database (11); University of British Columbia Herbarium (UBC) - Vascular Plant Collection (11); National System of Protected Areas in Poland - Plants (10); Vascular Plants, Museum of Archaeology, University of Stavanger (10); Arizona State University Vascular Plant Herbarium (10); Natural History Museum, Vienna - Herbarium W (10); Dpto de Botánica, Ecología y Fisiología Vegetal (herbario_cofc).Facultad de Ciencias.Universidad de Córdoba (9); Irish vascular plant data 1999-2009 (9); The Himalayan Uplands Plant database (HUP Version 1) (9); WAHerb (9); Flora Atlas N.T. (8); Scottish Natural Heritage - The ecology of Najas flexilis (Slender naiad) (8); Peabody Botany DiGIR Service (8); Herbarium GJO (7); Herbarium Specimens of Museum of Nature and Human Activities, Hyogo Prefecture, Japan (6); Merseyside BioBank - North Merseyside Flowering Plants (verified) (6); University of Alberta Museums, Vascular Plant Herbarium (6); Countryside Council for Wales - Freshwater Site Visits (6); USU-UTC Specimen Database (6); Plant (KIWE-PL) (6); Artsobservasjoner (6); Angiospermatatophytina Collection of Saitama Museum of Natural History (5); Tiroler Landesmuseum Ferdinandeum (5); Herbarium of Kitakyushu Museum of Natural History and Human History (5); Plantae, TAIF (Taiwan e-Learning and Digital Archives Program, TELDAP) (5); Nijmegen Natural History Museum (NL) - Herbarium (5); Herbarium WU (5); Plant Specimens of The Shimane Nature Museum of Mt. Sanbe (5); ENDEMIC SPECIES RESEARCH INSTITUTE (5); The Norwegian Species Observations Service - Botany (5); Herbarium of Taiwan Forestry Research Institute (5); Herbarium GZU (5); E. C. Smith Herbarium (ACAD) (4); inatura - Erlebnis Naturschau Dornbirn (4); (4); Leiner-Herbar Konstanz (4); Herbarium Senckenbergianum (FR) (4); Royal Botanic Gardens, Kew (4); Herbarium specimens (4); New Mexico Biodiversity Collections Consortium database (4); Natural History Museum Rotterdam (4); Flora exsiccata Bavarica (4); Database Schema for UC Davis [Herbarium Labels] (4); Herbario IEB del Instituto de Ecología, A.C., México (IE-BAJíO) (4); Vascular plant herbarium, Agder naturmuseum og botaniske hage (4); UA Herbarium (4); Wetland Inventory (NV) (4); Fundaci�n Miguel Lillo - Colecci�n Fanerog�mica (4); Irish vascular plant data 2011 (3); Field Museum of Natural History (Botany) Seed Plant Collection (3); Inventaire National du Patrimoine Naturel (I062) : Flore de l'Ain (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); Phanerogams herbarium specimens (3); BioFokus (3); Dr Francis Rose Field Notebook Project - Field Notebook Records of Dr Francis Rose 1950's to 1990's (3); herbario (3); Vascular plant collection of Jyvaskyla University Museum (3); Herbarium (Åbo Akademi), Centre for Biodiversity, University of Turku (TURA) (3); Herbier de Strasbourg (3); Universität Salzburg (3); Thames Valley Environmental Records Centre - Local Wildlife Site Surveys Oxfordshire (3); Inventaire National du Patrimoine Naturel (I057) : Flore du Limousin (3); Hortus Botanicus Sollerensis Herbarium (FBonafè) (3); Universidad de Navarra, Herbarium: PAMP-Vascular Plants (3); Vascular plants in Denmark recorded under the The Nationwide Monitoring and Assessment Programme for the Aquatic and Terrestrial Environments (NOVANA) (3); Herbarium, Biodiversity Research Center, Academia Sinica, Taipei (2); Herbier Louis-Marie (QFA) - Collection de plantes vasculaires (2); Botanical collections of the University of Tartu (2); Vascular Plants Collection of Sagamihara City Museum (2); CAS Botany (BOT) (2); Herbario de la Universidad de Sevilla, SEV-Historico (2); Vascular Plant Collection of Natural History Museum and Institute, Chiba (2); Colorado State University Herbarium (2); Thames Valley Environmental Records Centre - Local Wildlife Site Surveys Berkshire (2); Especímenes INBio (2); Universidad de Málaga: MGC-Cormof (2); Scottish Natural Heritage - The occurrence and distribution of Najas flexilis (Slender naiad) in Loch of Craiglush, Loch of the Lowes and Loch of Butterstone (2); Dorset Environmental Records Centre - Dorset SSSI Species Records 1952 - 2004 (Natural England) (2); Herbaria of the University and ETH Zürich (2); Herbarium specimens - Harmas de J. H. Fabre (2); Israel Nature and Parks Authority (2); National Trust - Hatfield Forest species data held by The National Trust. (2); Specimen Database of Colorado Vascular Plants (2); The Flora of County Clare (2); Botanical specimens database of Mr. Jiro Ito collection, Shizuoka Prefecture Museum of Natural History (2); AKG-Gelände (Bensheim) (1); Waldränder der Frankenhöhe (Rothenburg ob der Tauber) (1); Utah Valley State College Herbarium (1); Nationalpark Jasmund (1); KARSTLANDSCHAFT SÜDHARZ - VOM GIPSABBAU BEDROHT (Grenzstreifen am Röseberg) (1); Naturschutzstation Schmidsfelden (1); WildesMoor bei Schwabstedt (1); Bergkamen- Bergehalde Großes Holz (1); Flora of the Stołowe Mts. (1); Herbarium of University of Białystok - Vascular Plants (1); Triebesbach (Zeulenroda-Triebes) (1); GEO-Hauptveranstaltung in "Wildtierland" (1); UCBG TAPIR Provider (1); Langenberger Forst am Ochsenweg/ Niebüll-Leck (1); Hache im Ellernbruch (Sudweyhe / Weyhe) (1); EcoRecord - Dr Ellen Pisolkar's Freshwater Invertebrate Surveys 1991 to 2008 (1); Ireland's BioBlitz 2011 (1); Natural History Museum Maastricht (NL) - Herbarium (1); MfN - Fossil plants (Cenophytic) (1); Scottish Natural Heritage - Survey of slender naiad, Najas flexilis, in Loch of Butterstone and Loch of Craiglush (1); Norwegian Biodiversity Information Centre - Other datasets (1); CIBIO, Alicante:ABH-GBIF (1); NABU-Projekt (Osterode am Harz) Südharzer Gipskarst (1); Sonnentaugemeinschaft (1); Sudeniederung (Amt Neuhaus), Landkreis Lüneburg (1); Naturhistorisches Museum Mainz, Botanical Collection (1); Geo-Tag der Artenvielfalt Süßen Hornwiesen-Grundschule (1); Institut Menorquí d'Estudis. Colección Histórica de Rodríguez Femenías, Herbarium Generale Minoricae: HGM-Femenias (1); Flora of Słowiński National Park, Poland (1); GEO-Hauptveranstaltung (Duisburg) (1); Kiesbagger (Mittelhausen) (1); Herbarium Berolinense (1); Cartografía de vegetación a escala de detalle 1:10.000 de la masa forestal de Andalucía (1); National Trust - Ickworth species data held by The National Trust. (1); Issumer Fleuth (1); Vascular plants of south-central China (1); Entdeckertour am Muldestausee (1); Flora of the Stołowe Mts. (1); Biosphärenpark Wienerwald - Pfaffstätten (1); LBV 100 - Artenvielfalt am Rothsee (1); Humber Environmental Data Centre - Humber Environmental Data Centre - Non Sensitive Records from all taxonomic groups (1); Kremmer Luch (1); Dpto de Botánica, Ecología y Fisiología Vegetal (Historico_cofc). Facultad de Ciencias. Universidad de Córdoba (1); Freigelände Naturschutzscheune Reinheimer Teich (Kreis Darmstadt-Dieburg) (1); Philosophenwald und Wieseckaue in Gießen (1); Jordal (1); Universidad de Oviedo. Departamento de Biología de Organismos y Sistemas: FCO (1); Staatliches Museum für Naturkunde Stuttgart, Herbarium (1); Tag der Artenvielfalt (1); WII Herbarium Dataset (1); Universidad de Oviedo. Departamento de Biología de Organismos y Sistemas: FCO-Briof (1) accessed through the GBIF Data Portal. Each record tells when. See dataset links for citations & terms of use.];
iNaturalist (372);
Missouri Botanical Garden (51);
Plants Database, United States Department of Agriculture (52);
Western Kentucky University (2)