Glyceria fluitans
(L.) R.Br. · speciesAt a glance
Sources13 archives
Databases and archives Glyceria fluitans's data was compiled from.
WikipediaWikimedia Foundation11 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility416 230 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI38 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics46 specimens↗
NCBIUS National Library of Medicinesequences↗
GRIN TaxonomyUSDA-ARSdistribution & uses↗
Open Tree of LifeOpenTreephylogeny backbone↗
CCDBChromosome Counts DB · Tel Aviv U.genome & karyotype↗
GoaTGenomes on a Tree · Sangergenome & karyotype↗
PloiDBPloidy Databasegenome & karyotype
WikidataWikimedia Foundationstructured facts↗
GLoBIGlobal Biotic Interactionsbiotic interactions↗Every layer below draws on the sources above — open one to explore it, or use ← → to move between tabs.
Glyceria fluitans (syns Festuca fluitans, Poa fluitans, Panicularia fluitans), known as floating sweet-grass and water mannagrass, is a species of perennial grass in the genus Glyceria native to Europe, the Mediterranean region and Western Asia and occurring in wet areas such as ditches, riverbanks and ponds. It has a creeping rootstock, a thick stem which rises to one metre. The leaves are long, narrow and pale green, rough on both sides, often folded at the keel which lies on the surface of the water. The species epithet fluitans is Latin for "floating".Archibald William Smith
No narrative description available for this taxon yet.
Size & morphology23
Life cycle & reproduction13
Diet & foraging2
Habitat & environment13
Physiology & chemistry7
Other traits2
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 Glyceria fluitans 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 Glyceria fluitans 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 4041×GoaT · DTOL Flowering Plants Estimates Kew · GoaT · Kew Plant DNA C-values Database · CCDB · slov-fl +14
2n 203×CCDB · poland · CCDB · book-atlas-flowering-plants · CCDB · CromoCat 2015
2n 281×CCDB · CromoCat 2015
2n 301×CCDB · brit-fl
tetraploid1×GoaT · Kew Plant DNA C-values Database
polyploid 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 type416 230 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 institutions109 of 194 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 | 2 715 |
| Helsinki, FI | 553 |
| Olocation not on record | 429 |
| LDlocation not on record | 364 |
| Moscow State Universitylocation not on record | 340 |
| Salzburg, AT | 289 |
| Tartu, EE | 249 |
| BFLlocation not on record | 223 |
| Uppsala, SE | 217 |
| Trondheim, NO | 212 |
| MeiseBGlocation not on record | 191 |
| Oulu, FI | 155 |
| SLU Artdatabankenlocation not on record | 145 |
| Bergen, NO | 142 |
| Adam Mickiewicz University in Poznańlocation not on record | 130 |
| BRNUlocation not on record | 128 |
| BIO-UNIPIlocation not on record | 106 |
| Oskarshamn, SE | 104 |
| Turku, FI | 84 |
| KMNlocation not on record | 79 |
| Provincia di Livornolocation not on record | 74 |
| DBF-NHMDlocation not on record | 74 |
| Uniwersytet Marii Curie-Skłodowskiejlocation not on record | 73 |
| Christchurch, NZ | 73 |
| South Kensington, GB | 70 |
| Uniwersytet Warszawskilocation not on record | 70 |
| Ernst-Moritz-Arndt-Universitat Greifswaldlocation not on record | 69 |
| Görlitz, DE | 67 |
| TUR-Alocation not on record | 54 |
| GBS RAN - Glavny Botanichesky Sad Rossijskoj Akademii Nauklocation not on record | 52 |
| CJBGlocation not on record | 45 |
| Kuopio, FI | 44 |
| Entomological Society of Latvialocation not on record | 43 |
| Tallinn, EE | 41 |
| Jyväskylä, FI | 37 |
| Bern, CH | 34 |
| Bronx, US | 31 |
| Garðabær, IS | 29 |
| Museo Entomologico de Leonlocation not on record | 29 |
| Universidad del Pais Vasco (UPV/EHU)location not on record | 28 |
| MAlocation not on record | 26 |
| Wlocation not on record | 25 |
| TROMlocation not on record | 25 |
| Auckland, NZ | 25 |
| BClocation not on record | 25 |
| Dresden, DE | 24 |
| Chicago, US | 22 |
| UGentlocation not on record | 22 |
| Vitoria, ES | 21 |
| Karlsruhe, DE | 20 |
| Vancouver, CA | 20 |
| Museo Achille Folettolocation not on record | 19 |
| Barcelona, ES | 19 |
| Salamanca, ES | 18 |
| BDBClocation not on record | 17 |
| Berlin, DE | 17 |
| Logan, US | 17 |
| PrivatHerblocation not on record | 16 |
| Mexico City, MX | 16 |
| KFGBlocation not on record | 16 |
| GJOlocation not on record | 15 |
| Xiamen, CN | 15 |
| Pamplona, ES | 14 |
| Frankfurt am Main | 14 |
| 13 | |
| Natural History Museum Rotterdamlocation not on record | 12 |
| Saint Louis, US | 12 |
| Staatliches Museum fuer Naturkunde Karlsruhe (State Museum of Natural History)location not on record | 11 |
| Uniwersytet Rolniczy im. Hugona Kołłątaja w Krakowielocation not on record | 11 |
| Durango, MX | 11 |
| Museum Ludovicae Ulricae, Zoology Institute of the University of Uppsalalocation not on record | 10 |
| Tula State Lev Tolstoy Pedagogical Universitylocation not on record | 10 |
| València, ES | 10 |
| Porrentruy, CH | 10 |
| Uniwersytet Jagiellońskilocation not on record | 9 |
| Wellington, NZ | 9 |
| Institut und Museum fuer Geologie und Palaeontologielocation not on record | 9 |
| Mlocation not on record | 8 |
| Hobart, AU | 8 |
| John May Museum of Natural Historylocation not on record | 8 |
| Madison, US | 8 |
| McWane Science Centerlocation not on record | 7 |
| Philadelphia, US | 7 |
| SZUlocation not on record | 7 |
| Mexico City, MX | 7 |
| Uniwersytet Śląski w Katowicachlocation not on record | 7 |
| ZRC-SAZUlocation not on record | 6 |
| PRClocation not on record | 6 |
| Centro de Investigación en Biodiversidad y Conservación, Universidad Autónoma del Estado de Moreloslocation not on record | 6 |
| University of Stellenboschlocation not on record | 6 |
| GZUlocation not on record | 6 |
| Forssa, FI | 6 |
| New Haven, US | 6 |
| Mississippi State, US | 6 |
| Lausanne, CH | 5 |
| Instytut Ochrony Przyrody Polskiej Akademii Nauklocation not on record | 5 |
| Tula State Universitylocation not on record | 5 |
| Montecillo, Texcoco, MX | 5 |
| Staten Island, US | 5 |
| Bloomington, US | 5 |
| Porvoo, FI | 5 |
| nbflocation not on record | 5 |
| Arcata, US | 5 |
| Ann Arbor, US | 5 |
| Acadia Universitylocation not on record | 5 |
| Salvador, BR | 5 |
| Bourges, FR | 4 |
| Madrid, ES | 4 |
| Chicago, US | 4 |
| The State Museum-Preserve "The Kulikovo pole"location not on record | 4 |
| WTUlocation not on record | 4 |
| Claremont, US | 4 |
| Tilburg, NL | 4 |
| Juriquilla, MX | 4 |
| Guangzhou, CN | 4 |
| Tromso University Museumlocation not on record | 4 |
| Royal Botanic Garden Edinburghlocation not on record | 4 |
| Universidad Nacional de Colombia (UNAL)location not on record | 4 |
| Nijmegen, NL | 4 |
| Guasave, MX | 4 |
| Museo civico La Terra e l'Uomo di Crocetta del Montellolocation not on record | 3 |
| Frauenfeld, CH | 3 |
| Stockholm, SE | 3 |
| Conservatoire botanique national du Bassin parisienlocation not on record | 3 |
| Canberra, AU | 3 |
| Kostrzyca Forest Gene Banklocation not on record | 3 |
| Philadelphia, US | 3 |
| Glarus, CH | 3 |
| Finnish Museum of Natural History, Botanical Museumlocation not on record | 3 |
| Badajoz, ES | 3 |
| Jaén, ES | 3 |
| Rovaniemi, FI | 3 |
| NoColllocation not on record | 2 |
| Naturalis Biodiversity Centerlocation not on record | 2 |
| Burlington, US | 2 |
| Monastir, TN | 2 |
| Rotorua, NZ | 2 |
| Davis, US | 2 |
| Herbario Universidad de Concepciónlocation not on record | 2 |
| Tampa, US | 2 |
| National Museum Waleslocation not on record | 2 |
| Zürich, CH | 2 |
| FLADlocation not on record | 2 |
| Göteborg, SE | 2 |
| Pullman, US | 2 |
| Palmerston North, NZ | 2 |
| Canadian Department of Agriculturelocation not on record | 2 |
| Corvallis, US | 2 |
| Flagstaff, US | 2 |
| Namur, BE | 2 |
| Uniwersytet Opolskilocation not on record | 2 |
| The Tula Region State Institution of Culture "Tula Museum Association"location not on record | 2 |
| Aarhus, DK | 2 |
| Torreón, MX | 2 |
| Seoul, KR | 1 |
| Jackson, US | 1 |
| Wuzhou, CN | 1 |
| Granada, ES | 1 |
| ULBF-AGRlocation not on record | 1 |
| Brussel, BE | 1 |
| Durham, US | 1 |
| Austin, US | 1 |
| Paris, FR | 1 |
| Podgorica, ME | 1 |
| NMBU:MINAlocation not on record | 1 |
| Chongqing Museumlocation not on record | 1 |
| University of New Hampshirelocation not on record | 1 |
| College Park, US | 1 |
| Denver, US | 1 |
| San Jose State University, Museum of Birds and Mammalslocation not on record | 1 |
| Alicante, ES | 1 |
| Keene State Universitylocation not on record | 1 |
| Kew, GB | 1 |
| H-Hohlalocation not on record | 1 |
| National Botanic Garden of Waleslocation not on record | 1 |
| Philadelphia, US | 1 |
| Samara National Research Universitylocation not on record | 1 |
| Quito, EC | 1 |
| Kushiro City Museumlocation not on record | 1 |
| University of Alberta Museumslocation not on record | 1 |
| Coimbra, PT | 1 |
| Chapel Hill, US | 1 |
| Istituto Agrario Castelnuovolocation not on record | 1 |
| ISAlocation not on record | 1 |
| University of Guelph, OAC Herbariumlocation not on record | 1 |
| Honolulu, US | 1 |
| Taipei, TW | 1 |
| Nanjing, CN | 1 |
| Madrid, ES | 1 |
| St. Paul, US | 1 |
| Toronto, CA | 1 |
| Museo civico di Storia naturale Giacomo Doria di Genova | Giacomo Doria Natural History Museum in Genoalocation not on record | 1 |
| Pamplona, ES | 1 |
| Beijing, CN | 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 Glyceria fluitans 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.