Glyceria grandis
S.Watson · speciesAt a glance
Sources12 archives
Databases and archives Glyceria grandis's data was compiled from.
WikipediaWikimedia Foundation2 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility3 230 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI8 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics31 specimens↗
NCBIUS National Library of Medicinesequences↗
GRIN TaxonomyUSDA-ARSdistribution & uses↗
Open Tree of LifeOpenTreephylogeny backbone↗
CCDBChromosome Counts DB · Tel Aviv U.genome & 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 grandis is a species of Glyceria known by the common name American mannagrass. It is native to Canada and the United States, where it is widespread in distribution. It is most commonly found in wet areas such as riverbanks and ponds.
No narrative description available for this taxon yet.
Size & morphology3
Life cycle & reproduction4
Diet & foraging1
Habitat & environment6
Physiology & chemistry3
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 grandis 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 grandis 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.
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 203×CCDB · ipcn-api-dl · CCDB · book-ipcn66 · CCDB · book-atlas-flowering-plants
2n 401×CCDB · book-atlas-flowering-plants
n 101×CCDB · book-ipcn75-78
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 type3 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.
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Holding institutions96 of 159 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
| Institution | Specimens |
|---|---|
| Madison, US | 209 |
| Bronx, US | 138 |
| International Salmonella Centre (W.H.O.)location not on record | 104 |
| Québec, CA | 103 |
| Wuzhou, CN | 98 |
| Chongqing Museumlocation not on record | 97 |
| Museo civico La Terra e l'Uomo di Crocetta del Montellolocation not on record | 88 |
| Chicago, US | 85 |
| Missoula, US | 75 |
| University of Alberta Museumslocation not on record | 66 |
| Victoria, CA | 65 |
| Logan, US | 65 |
| Ann Arbor, US | 62 |
| Acadia Universitylocation not on record | 61 |
| University of Wisconsinlocation not on record | 56 |
| Vancouver, CA | 54 |
| University of New Hampshirelocation not on record | 54 |
| DOI/NPS, Colonial National Historical Parklocation not on record | 53 |
| Denver, US | 50 |
| Green Bay, US | 49 |
| WTUlocation not on record | 45 |
| Moscow, US | 43 |
| University of Stellenboschlocation not on record | 36 |
| New Haven, US | 35 |
| Musee des Dinosaures d'Esperaza (Aude)location not on record | 34 |
| Philadelphia, US | 33 |
| Montréal, CA | 30 |
| Saint John, CA | 29 |
| Bozeman, US | 28 |
| Université Lavallocation not on record | 27 |
| Toronto, CA | 27 |
| Trondheim, NO | 25 |
| Albuquerque, US | 24 |
| Flagstaff, US | 24 |
| Oregon State Universitylocation not on record | 20 |
| Bloomington, US | 20 |
| WINlocation not on record | 19 |
| Olocation not on record | 19 |
| Chadron, US | 18 |
| Boise, US | 17 |
| Lincoln, US | 17 |
| Saint Louis, US | 15 |
| LDlocation not on record | 15 |
| Tampa, US | 15 |
| McWane Science Centerlocation not on record | 14 |
| Pocatello, US | 14 |
| SLU Artdatabankenlocation not on record | 14 |
| Caldwell, US | 13 |
| Provincia di Livornolocation not on record | 13 |
| Helsinki, FI | 12 |
| Pullman, US | 12 |
| Philadelphia, US | 11 |
| Durham, US | 11 |
| DOI/NPS, Greenbelt Parklocation not on record | 11 |
| St. Paul, US | 10 |
| Whitehorse, CA | 10 |
| Ypsilanti, US | 8 |
| Tacoma, US | 8 |
| Paris, FR | 7 |
| Kew, GB | 7 |
| Bergen, NO | 6 |
| USFS/BHSClocation not on record | 6 |
| Yukon Universitylocation not on record | 6 |
| Trois-Rivières, CA | 5 |
| IDElocation not on record | 5 |
| ASUlocation not on record | 5 |
| Weber State Universitylocation not on record | 5 |
| University of Lethbridgelocation not on record | 4 |
| Royal Botanical Gardenslocation not on record | 4 |
| Provo, US | 4 |
| Salzburg, AT | 4 |
| Oskarshamn, SE | 4 |
| Dekalb, US | 4 |
| Riverside, US | 3 |
| Anchorage, US | 3 |
| Keene State Universitylocation not on record | 3 |
| University of Guelph, OAC Herbariumlocation not on record | 3 |
| Moscow State Universitylocation not on record | 3 |
| Knoxville, US | 3 |
| Royal Alberta Museumlocation not on record | 3 |
| Durango, US | 3 |
| USFSlocation not on record | 3 |
| Davis, US | 3 |
| Oulu, FI | 3 |
| Florida Museum of Natural History- Zoology, Paleontology & Paleobotanylocation not on record | 3 |
| Science Museum of Minnesotalocation not on record | 3 |
| San Angelo, US | 3 |
| University of Winnipeglocation not on record | 3 |
| Rocky Mountain Biological Laboratorylocation not on record | 3 |
| Canadian Museum of Nature, National Herbarium of Canadalocation not on record | 3 |
| BClocation not on record | 2 |
| Millersville, US | 2 |
| nbflocation not on record | 2 |
| Bend, US | 2 |
| Mississippi State, US | 2 |
| Chapel Hill, US | 2 |
| Museum of the Rockieslocation not on record | 2 |
| MeiseBGlocation not on record | 2 |
| DULlocation not on record | 2 |
| Canadian Department of Agriculturelocation not on record | 2 |
| Honolulu, US | 2 |
| Corvallis, US | 2 |
| Uppsala, SE | 2 |
| Spearfish, US | 2 |
| Decorah, US | 2 |
| Mohonk Preservelocation not on record | 2 |
| Istituto Agrario Castelnuovolocation not on record | 2 |
| State University of New York, College at Oneontalocation not on record | 2 |
| Orem, US | 2 |
| Whitewater, US | 2 |
| Waverly, US | 2 |
| VALElocation not on record | 2 |
| University of Wisconsinlocation not on record | 2 |
| Pittsburg, US | 2 |
| Cambridge, US | 1 |
| Jena Microbial Resource Collectionlocation not on record | 1 |
| Columbia, US | 1 |
| Hamilton, US | 1 |
| Henderson, US | 1 |
| Meguro Parasitological Museumlocation not on record | 1 |
| BFLlocation not on record | 1 |
| McGill University, Herbariumlocation not on record | 1 |
| Davenport, US | 1 |
| Karlsruhe, DE | 1 |
| GB | 1 |
| sonstHerblocation not on record | 1 |
| Bangkok, TH | 1 |
| San Luis Obispo, US | 1 |
| Bureau of Land Management, Caliente Field Officelocation not on record | 1 |
| Dresden, DE | 1 |
| Auckland, NZ | 1 |
| Walla Walla, US | 1 |
| Morgantown, US | 1 |
| EL PASO, US | 1 |
| Cheney, US | 1 |
| Montréal, CA | 1 |
| DOI/NPS, Little Rock Central High School National Historic Sitelocation not on record | 1 |
| Wlocation not on record | 1 |
| Staten Island, US | 1 |
| Turku, FI | 1 |
| Stockholm, SE | 1 |
| Jyväskylä, FI | 1 |
| Chicago, US | 1 |
| Berlin, DE | 1 |
| GAlocation not on record | 1 |
| Beijing, CN | 1 |
| Allentown, US | 1 |
| Russellville, US | 1 |
| Kingston, US | 1 |
| WNNUlocation not on record | 1 |
| MAlocation not on record | 1 |
| Claremont, US | 1 |
| STNFlocation not on record | 1 |
| BioFokuslocation not on record | 1 |
| TROMlocation not on record | 1 |
| Kuopio, FI | 1 |
| CASlocation not on record | 1 |
| Phoenix, US | 1 |
| Fairfax, US | 1 |
Where the DNA of Glyceria grandis 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.