Hypochaeris radicata
speciesAt a glance
Sources14 archives
Databases and archives Hypochaeris radicata's data was compiled from.
WikipediaWikimedia Foundation14 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility820 928 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI43 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics70 specimens↗
NCBIUS National Library of Medicinesequences↗
GRIN TaxonomyUSDA-ARSdistribution & uses↗
Open Tree of LifeOpenTreephylogeny backbone↗
CCDBChromosome Counts DB · Tel Aviv U.genome & karyotype↗
giftgenome & karyotype
GoaTGenomes on a Tree · Sangergenome & karyotype↗
PloiDBPloidy Databasegenome & karyotype
Paleobiology DatabasePBDB consortiumfossil record↗
GLoBIGlobal Biotic Interactionsbiotic interactions↗Every layer below draws on the sources above — open one to explore it, or use ← → to move between tabs.
Hypochaeris radicata yellow flowers Hypochaeris radicata (sometimes spelled Hypochoeris radicata) – also known as catsear, flatweed, cat's-ear, hairy cat's ear, or false dandelion – is a perennial, low-lying edible herb often found in lawns. The plant is native to Europe,Altervista Flora Italiana, Hypochaeris radicata L. includes photos and European distribution map but has also been introduced to the Americas,Biota of North America Program 2014 county distribution mapJørgensen, P. M., M. H. Nee & S. G. Beck. (eds.) 2014. Catálogo de las plantas vasculares de Bolivia, Monographs in systematic botany from the Missouri Botanical Garden 127(1–2): i–viii, 1–1744.Luteyn, J. L. 1999. Páramos, a checklist of plant diversity, geographical distribution, and botanical literature. Memoirs of The New York Botanical Garden 84: viii–xv, 1–278. Japan,Flora of China, Hypochaeris radicata Linnaeus, 1753. 假蒲公英猫儿菊 jia pu gong ying mao er ju Australia,Atlas of Living Australia, Hypochaeris radicata L., Cat's Ear and New Zealand, where it can be an invasive weed. It is listed as a noxious weed in the northwestern U.S. state of Washington.
No narrative description available for this taxon yet.
Size & morphology23
Life cycle & reproduction18
Diet & foraging2
Habitat & environment16
Physiology & chemistry8
Other traits4
A DNA barcode is a short, standardised stretch of genes that works like a fingerprint — enough to tell one species from another. Below is the molecular trace Hypochaeris radicata has left across the world's sequence archives.
At a glance
★ the standard DNA barcode for this group — the short region actually read to tell this species apart. The rest are extra genes sequenced along the way.
The complete instruction manual Hypochaeris radicata carries — its genome. We read it from three angles — how big it is, how the DNA is packed into chromosomes, and how completely it has been sequenced — and explain how to read each value as you go.
Genome sizehow big the whole instruction manual is
Measured in base pairs (bp) — the individual letters of DNA (human ≈ 3.2 Gb, a bacterium a few million). The chart places this genome on a logarithmic scale — each step to the right is ten times bigger — among reference organisms. Across species a bigger genome loosely tracks with larger cells, slower growth and lower-energy lifestyles (powered flight favours small genomes) — yet it does not imply more genes or a more advanced organism (the long-standing C-value paradox).
Chromosomes & ploidyhow the DNA is packaged
2n is the full chromosome count in a normal body cell; n is a gamete (egg or sperm), which carries half. Ploidy is how many complete chromosome sets each cell holds — 2× (diploid) is typical for animals, while higher levels (polyploidy) are common in plants. Click any value below to see the underlying records and sources.
2n 859×GoaT · DTOL Flowering Plants Estimates Kew · GoaT · Kew Plant DNA C-values Database · CCDB · ita-fl +13
n 419×CCDB · ipcn-api-dl · CCDB · book-ipcn67-71 · CCDB · book-ipcn73-74
diploid2×GoaT · Kew Plant DNA C-values Database · GIFT · GIFT (floras)
diploid inferred1×PloiDB · genus-scale
How far back this lineage goes — and how we know. Everything here is measured in Ma, short for “mega-annum”: millions of years ago. The chart reads left to right like a calendar of the Earth, from the deep past on the left to today at the right edgetop to bottom like a core drilled through the Earth, from the deep past at the top down to today at the bottom.
At a glance
When this lineage existed
How to read this: the coloured strip along the bottomdown the left is the geological calendar — the standard epochs (Pliocene, Pleistocene…) every museum uses, shown so you can see which chapter of Earth's history this lineage lived in. This lineage is a young one, so the strip is zoomed in to epochs — the finer subdivisions inside a period. The orange marker is the DNA clock: DNA accumulates mutations at a roughly steady rate, so comparing this species' DNA with its relatives estimates when the lineage split off — independently of any fossil.
Record type820 928 records
Origin
Range
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Museum / Voucheredphysical evidence
Backed by a physical specimen — a herbarium sheet, sample or voucher held in a collection. “Vouchered” means supported by material evidence, not just an observation.
Cultivated / Captivenot free-living
A living individual in a botanical garden, zoo or nursery — cultivated or kept, not free-living.
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Holding institutions218 of 411 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
| Institution | Specimens |
|---|---|
| Uniwersytet Wrocławskilocation not on record | 2 224 |
| BIO-UNIPIlocation not on record | 404 |
| LDlocation not on record | 295 |
| Olocation not on record | 259 |
| Adelaide, AU | 239 |
| Berlin, DE | 227 |
| Museo Entomologico de Leonlocation not on record | 163 |
| Pretoria, ZA | 163 |
| Bergen, NO | 155 |
| Christchurch, NZ | 154 |
| Mount Annan, AU | 147 |
| Hobart, AU | 147 |
| Salzburg, AT | 135 |
| València, ES | 132 |
| Canberra, AU | 132 |
| Entomological Society of Latvialocation not on record | 129 |
| WTUlocation not on record | 128 |
| Brisbane, AU | 112 |
| CICYTEXlocation not on record | 112 |
| Oskarshamn, SE | 107 |
| Odawara, JP | 105 |
| Moscow State Universitylocation not on record | 102 |
| Chongqing Museumlocation not on record | 97 |
| Auckland, NZ | 92 |
| Philadelphia, US | 90 |
| SLU Artdatabankenlocation not on record | 86 |
| BFLlocation not on record | 82 |
| South Kensington, GB | 79 |
| Pullman, US | 69 |
| Vancouver, CA | 68 |
| Saint Louis, US | 68 |
| Görlitz, DE | 64 |
| Corvallis, US | 64 |
| Bronx, US | 61 |
| Universidad del Pais Vasco (UPV/EHU)location not on record | 59 |
| Kensington, AU | 56 |
| Tartu, EE | 56 |
| ISAlocation not on record | 55 |
| NSW Dept of Planning, Industry and Environmentlocation not on record | 55 |
| KMNlocation not on record | 54 |
| BClocation not on record | 53 |
| Madrid, ES | 52 |
| Riverside, US | 51 |
| Trondheim, NO | 50 |
| Durban, ZA | 50 |
| CJBGlocation not on record | 49 |
| Williamsburg, US | 49 |
| Armidale, AU | 47 |
| BRNUlocation not on record | 46 |
| Ernst-Moritz-Arndt-Universitat Greifswaldlocation not on record | 44 |
| Salamanca, ES | 43 |
| Ann Arbor, US | 42 |
| DBF-NHMDlocation not on record | 39 |
| Universidad Nacional de Colombia (UNAL)location not on record | 37 |
| Nagano City, JP | 37 |
| Badajoz, ES | 37 |
| San Isidro, AR | 35 |
| Arcata, US | 35 |
| Davis, US | 34 |
| Bangkok, TH | 34 |
| University of Stellenboschlocation not on record | 34 |
| Wellington, NZ | 33 |
| Tsukuba, JP | 33 |
| Pamplona, ES | 32 |
| Santa Barbara, US | 30 |
| Frankfurt am Main | 29 |
| Claremont, US | 29 |
| Blumenau, BR | 29 |
| Kochi, JP | 29 |
| San Diego, US | 28 |
| NSMKlocation not on record | 28 |
| Fukushima Universitylocation not on record | 27 |
| College of the Atlantic, Museumlocation not on record | 27 |
| GBS RAN - Glavny Botanichesky Sad Rossijskoj Akademii Nauklocation not on record | 26 |
| Canadian Department of Agriculturelocation not on record | 26 |
| Toyama, JP | 25 |
| Provincia di Livornolocation not on record | 24 |
| College Park, US | 24 |
| Wlocation not on record | 23 |
| Karlsruhe, DE | 23 |
| Shinshu Universitylocation not on record | 23 |
| Instituto de Investigación de Recursos Biológicos Alexander von Humboldt (IAvH)location not on record | 23 |
| San Luis Obispo, US | 23 |
| DOI/NPS, Little Rock Central High School National Historic Sitelocation not on record | 23 |
| Dresden, DE | 22 |
| Santa Cruz, US | 21 |
| Moscow, US | 21 |
| CASlocation not on record | 20 |
| Córdoba, AR | 19 |
| Tokushima, JP | 19 |
| MAlocation not on record | 19 |
| Kew, GB | 19 |
| Universidad de La Salle (La Salle)location not on record | 18 |
| Bern, CH | 18 |
| Bando, JP | 18 |
| Victoria, CA | 18 |
| Philadelphia, US | 18 |
| Portland, US | 17 |
| Kawasaki Shi Tama Ku, JP | 16 |
| Natural History Museum Rotterdamlocation not on record | 15 |
| US | 15 |
| Stockholm, SE | 15 |
| Museo Achille Folettolocation not on record | 15 |
| Otaru, JP | 15 |
| Institut und Museum fuer Geologie und Palaeontologielocation not on record | 15 |
| UChlocation not on record | 14 |
| Allentown, US | 14 |
| BISHlocation not on record | 14 |
| Sevilla, ES | 14 |
| Universidad Católica de Oriente (UCO)location not on record | 14 |
| Rotorua, NZ | 14 |
| Staten Island, US | 14 |
| JP | 14 |
| Universidad de Antioquia (UdeA)location not on record | 14 |
| GJOlocation not on record | 14 |
| Museum Ludovicae Ulricae, Zoology Institute of the University of Uppsalalocation not on record | 14 |
| Pontificia Universidad Javeriana (PUJ)location not on record | 13 |
| John T. Waterhouse Herbariumlocation not on record | 13 |
| MeiseBGlocation not on record | 13 |
| Cape Town, ZA | 13 |
| Laboratory of Palaeontologylocation not on record | 13 |
| Taipei, TW | 12 |
| Columbia, US | 12 |
| Criciúma, BR | 11 |
| New Haven, US | 11 |
| PrivatHerblocation not on record | 11 |
| Chapel Hill, US | 11 |
| UNESClocation not on record | 11 |
| Burlington, US | 11 |
| KIRMlocation not on record | 11 |
| Valdosta State Universitylocation not on record | 11 |
| Alicante, ES | 11 |
| Uppsala, SE | 10 |
| Zürich, CH | 10 |
| GAlocation not on record | 10 |
| Mlocation not on record | 10 |
| Boise, US | 10 |
| QVMAGlocation not on record | 10 |
| Mexico City, MX | 10 |
| Flagstaff, US | 10 |
| Norfolk, US | 10 |
| Québec, CA | 9 |
| Glarus, CH | 9 |
| Missoula, US | 9 |
| GZUlocation not on record | 9 |
| PUC-RSlocation not on record | 9 |
| Universidad de Caldas (UCaldas)location not on record | 9 |
| Pamplona, ES | 9 |
| Clemson, US | 9 |
| Parthenon Tama History Museumlocation not on record | 9 |
| Jena Microbial Resource Collectionlocation not on record | 9 |
| Sagamihara, JP | 9 |
| China Agricultural Universitylocation not on record | 8 |
| Wuzhou, CN | 8 |
| Tilburg, NL | 8 |
| Valparaiso, CL | 8 |
| Acadia Universitylocation not on record | 8 |
| Dekalb, US | 8 |
| Museo civico di Storia naturale Giacomo Doria di Genova | Giacomo Doria Natural History Museum in Genoalocation not on record | 8 |
| EL PASO, US | 8 |
| Smithfield, AU | 8 |
| Anchorage, US | 8 |
| Ashland, US | 8 |
| Bloomington, US | 8 |
| Madison, US | 8 |
| Taipei, TW | 7 |
| Paris, FR | 7 |
| BSBIlocation not on record | 7 |
| Sanda, JP | 7 |
| San Jose State University, Museum of Birds and Mammalslocation not on record | 7 |
| J.F.Oberlin Universitylocation not on record | 7 |
| New Brunswick, US | 7 |
| KOMlocation not on record | 7 |
| University of New Hampshirelocation not on record | 7 |
| Jardín Botánico José Celestino Mutis (JBBJCM)location not on record | 7 |
| Oulu, FI | 7 |
| University of Alberta Museumslocation not on record | 6 |
| TAIElocation not on record | 6 |
| Palmerston North, NZ | 6 |
| Akita Prefectural Museumlocation not on record | 6 |
| Johnson City, US | 6 |
| Phyletisches Museum Jenalocation not on record | 6 |
| Knoxville, US | 6 |
| Taipei, TW | 6 |
| Kagoshima, JP | 6 |
| National Institute of Biological Resourceslocation not on record | 6 |
| Tomioka, JP | 6 |
| Beijing, CN | 5 |
| SIHUlocation not on record | 5 |
| Tacoma, US | 5 |
| Batemans Bay, AU | 5 |
| DOI/NPS, Mississippi National River & Recreation Arealocation not on record | 5 |
| Tallinn, EE | 5 |
| Irvine, US | 5 |
| Parkville, AU | 5 |
| Montréal, CA | 5 |
| Sugadaira Research Station, Mountain Science Center, University of Tsukubalocation not on record | 5 |
| San José, CR | 5 |
| US | 5 |
| DOI/NPS, Greenbelt Parklocation not on record | 5 |
| La Trobe Universitylocation not on record | 5 |
| Logan, US | 5 |
| Washington, US | 4 |
| Frauenfeld, CH | 4 |
| Little Rock, US | 4 |
| Ishikawa Museum of Natural Historylocation not on record | 4 |
| ASUlocation not on record | 4 |
| Turlock, US | 4 |
| Pittsburg, US | 4 |
| Université Lavallocation not on record | 4 |
| Jackson, US | 4 |
| Fairfax, US | 4 |
| Elikins, US | 4 |
| University of North Carolina at Pembrokelocation not on record | 4 |
| UTFPR-CPlocation not on record | 3 |
| QCNElocation not on record | 3 |
| UFSClocation not on record | 3 |
| Conservatoire botanique national du Bassin parisienlocation not on record | 3 |
| DOI/NPS, Mount Rainier National Parklocation not on record | 3 |
| Western Carolina Universitylocation not on record | 3 |
| Palmerston, AU | 3 |
| TROMlocation not on record | 3 |
| Minia, EG | 3 |
| Bourges, FR | 3 |
| National Museum Waleslocation not on record | 3 |
| Turku, FI | 3 |
| JBRJlocation not on record | 3 |
| DASSHlocation not on record | 3 |
| Phoenix, US | 3 |
| HUAlocation not on record | 3 |
| Texas Lutheran Universitylocation not on record | 3 |
| Portland, US | 3 |
| Naturalis Biodiversity Centerlocation not on record | 3 |
| James Cook Townsvillelocation not on record | 3 |
| HJAEFlocation not on record | 3 |
| Gijón, ES | 3 |
| PRClocation not on record | 3 |
| Omachi Alpine Museumlocation not on record | 3 |
| Helsinki, FI | 3 |
| Porto Alegre, BR | 3 |
| Castelar, AR | 3 |
| Fredericksburg, US | 3 |
| nbflocation not on record | 3 |
| AUAlocation not on record | 3 |
| Tuscaloosa, US | 3 |
| University of Genevalocation not on record | 3 |
| Staatliches Museum fuer Naturkunde Karlsruhe (State Museum of Natural History)location not on record | 3 |
| Universidade Federale do Rio Grande do Sullocation not on record | 3 |
| Aarhus, DK | 3 |
| Mount Berry, US | 3 |
| Weymouth Woods Sandhills Nature Preservelocation not on record | 3 |
| Campo Mourão, BR | 3 |
| CUVClocation not on record | 3 |
| UDESC-CAVlocation not on record | 3 |
| Los Angeles, US | 3 |
| Henderson, US | 3 |
| University of Guelph, OAC Herbariumlocation not on record | 3 |
| Emporia, US | 2 |
| Museum of the Rockieslocation not on record | 2 |
| Bozeman, US | 2 |
| *unvoucheredlocation not on record | 2 |
| Due West, US | 2 |
| Hiratsuka City Museumlocation not on record | 2 |
| Parc Botanique et Zoologique de Tsimbazaza (PBZT)location not on record | 2 |
| Millersville, US | 2 |
| Herb. BBGlocation not on record | 2 |
| Viña del Mar, CL | 2 |
| Granada, ES | 2 |
| Cheney, US | 2 |
| Durango, MX | 2 |
| Edmonton, CA | 2 |
| Jaén, ES | 2 |
| Tampa, US | 2 |
| Whitehorse, CA | 2 |
| Sendai, JP | 2 |
| Chadron, US | 2 |
| Zürich, CH | 2 |
| University of Tennessee at Chattanoogalocation not on record | 2 |
| Tempe, US | 2 |
| Felix d'Herelle Reference Center for Bacterial Viruseslocation not on record | 2 |
| Fundación Miguel Lillolocation not on record | 2 |
| Trois-Rivières, CA | 2 |
| Ciudad Autónoma de Buenos Aires, AR | 2 |
| Museo civico La Terra e l'Uomo di Crocetta del Montellolocation not on record | 2 |
| OLAlocation not on record | 2 |
| UGentlocation not on record | 2 |
| Severin-McDaniel Insect Collectionlocation not on record | 2 |
| Xiamen, CN | 2 |
| Conway, US | 2 |
| KNAMlocation not on record | 2 |
| IAvHlocation not on record | 2 |
| Nijmegen, NL | 2 |
| Iwate Prefectural Museumlocation not on record | 2 |
| Coimbra, PT | 2 |
| Valparaíso, CL | 2 |
| McWane Science Centerlocation not on record | 2 |
| Herbario Universidad de Concepciónlocation not on record | 2 |
| Sapporo, JP | 2 |
| St. Paul, US | 2 |
| Foz do Iguaçu, BR | 2 |
| Caldwell, US | 2 |
| Córdoba, ES | 2 |
| Research Collection of B. A. Bennettlocation not on record | 2 |
| Long Beach, US | 2 |
| Maryland Department of Natural Resourceslocation not on record | 2 |
| Porrentruy, CH | 2 |
| FUVATESlocation not on record | 2 |
| San Bernardino, US | 2 |
| UFPRlocation not on record | 2 |
| Universidad Pedagógica y Tecnológica de Colombia (UPTC)location not on record | 2 |
| Edinburgh, GB | 2 |
| Fort Worth, US | 2 |
| Universidade da Região de Joinville - Univillelocation not on record | 2 |
| Museo naturalistico del Frignano Ferruccio Minghellilocation not on record | 2 |
| Tall Timbers Research Stationlocation not on record | 2 |
| Fayetteville, US | 2 |
| INMAlocation not on record | 1 |
| Tula State Lev Tolstoy Pedagogical Universitylocation not on record | 1 |
| Fulda, DE | 1 |
| UNIVILLElocation not on record | 1 |
| Bend, US | 1 |
| Cascavel, BR | 1 |
| Bureau of Land Management, Medford District Officelocation not on record | 1 |
| BGPAlocation not on record | 1 |
| Santiago de Compostela, ES | 1 |
| Wayland Universitylocation not on record | 1 |
| BMlocation not on record | 1 |
| Muséum Henri Lecoqlocation not on record | 1 |
| IPE-CSIClocation not on record | 1 |
| Istituto Agrario Castelnuovolocation not on record | 1 |
| Denton, US | 1 |
| UNISANTAlocation not on record | 1 |
| La Paz, BO | 1 |
| Universiti Sains Malaysialocation not on record | 1 |
| Ypsilanti, US | 1 |
| Kingston, US | 1 |
| DOI/NPS, Colonial National Historical Parklocation not on record | 1 |
| Embrapa Agrobiology Diazothrophic Microbial Culture Collectionlocation not on record | 1 |
| Plocation not on record | 1 |
| Hudson, US | 1 |
| John May Museum of Natural Historylocation not on record | 1 |
| MSB-3054location not on record | 1 |
| Universidad Industrial de Santander (UIS)location not on record | 1 |
| Nishihara, JP | 1 |
| INTAlocation not on record | 1 |
| Cenit Transporte y Logística de Hidrocarburos S.A.S. (CENIT)location not on record | 1 |
| Asheville, US | 1 |
| GB | 1 |
| Chicago, US | 1 |
| Glocation not on record | 1 |
| Nishihara, JP | 1 |
| H-AkrKGlocation not on record | 1 |
| LfUlocation not on record | 1 |
| West Virginia Wesleyan Collegelocation not on record | 1 |
| Elocation not on record | 1 |
| MEDELlocation not on record | 1 |
| Saint John, CA | 1 |
| University of British Columbia, Herbariumlocation not on record | 1 |
| Philadelphia, US | 1 |
| UNICAMPlocation not on record | 1 |
| Sion, CH | 1 |
| Audubon Society -- Silver Bluff Audubon Center and Sanctuarylocation not on record | 1 |
| UFABClocation not on record | 1 |
| Londrina, BR | 1 |
| UFMSlocation not on record | 1 |
| Podgorica, ME | 1 |
| Royal Botanic Garden Edinburghlocation not on record | 1 |
| Stellenbosch University, DST- NRF Centre of Excellence for Invasion Biologylocation not on record | 1 |
| Tromso University Museumlocation not on record | 1 |
| Musée des Confluenceslocation not on record | 1 |
| University of Southern Mississippilocation not on record | 1 |
| Zapopan, MX | 1 |
| Quito, EC | 1 |
| Florida Museum of Natural History- Zoology, Paleontology & Paleobotanylocation not on record | 1 |
| SJNAlocation not on record | 1 |
| NMBU:MINAlocation not on record | 1 |
| Mississippi State, US | 1 |
| UTPLlocation not on record | 1 |
| BGBMlocation not on record | 1 |
| Oswego, US | 1 |
| Toronto, CA | 1 |
| Universidad del Valle (UV)location not on record | 1 |
| Meguro Parasitological Museumlocation not on record | 1 |
| Universidade Federal de Santa Catarinalocation not on record | 1 |
| Morgantown, US | 1 |
| Bothell, US | 1 |
| Lord Fairfax Community Collegelocation not on record | 1 |
| San Diego Natural History Museum, Herbariumlocation not on record | 1 |
| Pacific Lutheran Universitylocation not on record | 1 |
| Durham, US | 1 |
| Universidade Federal de Pelotaslocation not on record | 1 |
| UFRRJlocation not on record | 1 |
| Northridge, US | 1 |
| San Angelo, US | 1 |
| DOI/NPS, San Juan Island National Historical Parklocation not on record | 1 |
| Conway, US | 1 |
| GHPG$location not on record | 1 |
| Weber State Universitylocation not on record | 1 |
| Brussel, BE | 1 |
| Austin, US | 1 |
| Catalina Island Conservancylocation not on record | 1 |
| San Jose, US | 1 |
| National Botanic Garden of Waleslocation not on record | 1 |
| Pocatello, US | 1 |
| Göteborg, SE | 1 |
| South African National Biodiversity Institute, Compton Herbariumlocation not on record | 1 |
| Centre National d'Application des Recherches Pharmaceutiques (CNARP)location not on record | 1 |
| GNWPlocation not on record | 1 |
| Provo, US | 1 |
| Brasília, BR | 1 |
| Universidad Distrital Francisco José de Caldas (UDistrital)location not on record | 1 |
Cultivated / Captivenot free-living
A living individual in a botanical garden, zoo or nursery — cultivated or kept, not free-living.
Where the DNA of Hypochaeris radicata was picked up in samples of water, soil or air — nobody saw the organism, only its DNA left behind. A trace is a clue that the species was near, not a confirmed sighting.
Signal
Where its DNA was found
How strong is each trace?
Modelled climatemodelled
How to read this: each dot is one detection of this species' DNA in an environmental sample. The confidence meter weighs how many independent studies and places back up the signal — one detection in one study is a hint; many across several studies is solid. Records dated before 2008 (when eDNA methods began) are treated as likely mislabeled and left off the map.