Carex tenera
Dewey · speciesAt a glance
Sources10 archives
Databases and archives Carex tenera's data was compiled from.
WikipediaWikimedia Foundation3 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility1 524 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI11 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics6 specimens↗
NCBIUS National Library of Medicinesequences↗
GRIN TaxonomyUSDA-ARSdistribution & uses↗
Open Tree of LifeOpenTreephylogeny backbone↗
CCDBChromosome Counts DB · Tel Aviv U.genome & karyotype↗
GLoBIGlobal Biotic Interactionsbiotic interactions↗Every layer below draws on the sources above — open one to explore it, or use ← → to move between tabs.
Carex tenera, known as quill sedge, is a species of sedge native to the northern United States and Canada. Two varieties are recognized in Flora of North America: C. tenera var. tenera C. tenera var. echinodes (= Carex echinodes (Fernald) P.Rothr., Reznicek & Hipp)
No narrative description available for this taxon yet.
Size & morphology4
Life cycle & reproduction25
Diet & foraging1
Habitat & environment24
Physiology & chemistry19
Uses & economy14
Other traits6
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 Carex tenera 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 Carex tenera 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 562×CCDB · ipcn-api-dl · CCDB · carex
2n 521×CCDB · carex
2n 541×CCDB · carex
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 type1 524 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 institutions55 of 88 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 | 226 |
| Ann Arbor, US | 114 |
| Bronx, US | 106 |
| Montréal, CA | 79 |
| Chicago, US | 65 |
| Green Bay, US | 43 |
| Museo civico La Terra e l'Uomo di Crocetta del Montellolocation not on record | 38 |
| Toronto, CA | 35 |
| Saint John, CA | 33 |
| WINlocation not on record | 32 |
| University of Toronto Mississaugalocation not on record | 32 |
| Philadelphia, US | 26 |
| Burlington, US | 26 |
| St. Paul, US | 25 |
| Allentown, US | 25 |
| University of Alberta Museumslocation not on record | 25 |
| Wuzhou, CN | 23 |
| McWane Science Centerlocation not on record | 21 |
| Québec, CA | 20 |
| University of Wisconsinlocation not on record | 19 |
| Bloomington, US | 17 |
| International Salmonella Centre (W.H.O.)location not on record | 16 |
| Montréal, CA | 16 |
| Missoula, US | 16 |
| Chongqing Museumlocation not on record | 15 |
| Vancouver, CA | 14 |
| Tampa, US | 12 |
| Museum of the Rockieslocation not on record | 11 |
| San Angelo, US | 10 |
| Dover, US | 8 |
| Acadia Universitylocation not on record | 8 |
| Royal Botanical Gardenslocation not on record | 8 |
| Davenport, US | 8 |
| Oregon State Universitylocation not on record | 8 |
| University of Stellenboschlocation not on record | 8 |
| Albuquerque, US | 7 |
| Université Lavallocation not on record | 7 |
| Saint Louis, US | 7 |
| Lincoln, US | 6 |
| USFS/BHSClocation not on record | 5 |
| Chicago, US | 5 |
| Tuscaloosa, US | 4 |
| Knoxville, US | 4 |
| Flagstaff, US | 4 |
| Pullman, US | 4 |
| Spearfish, US | 3 |
| WTUlocation not on record | 3 |
| Bangkok, TH | 3 |
| ASUlocation not on record | 3 |
| Whitewater, US | 3 |
| DOI/NPS, Colonial National Historical Parklocation not on record | 3 |
| Christchurch, NZ | 3 |
| New Haven, US | 3 |
| Philadelphia, US | 2 |
| Fargo, US | 2 |
| Jackson, US | 2 |
| DOI/NPS, Little Rock Central High School National Historic Sitelocation not on record | 2 |
| Moscow, US | 2 |
| Staten Island, US | 2 |
| SEINetlocation not on record | 2 |
| Whitehorse, CA | 2 |
| Dekalb, US | 2 |
| Science Museum of Minnesotalocation not on record | 2 |
| University of Wisconsinlocation not on record | 2 |
| Denver, US | 2 |
| San Jose State University, Museum of Birds and Mammalslocation not on record | 1 |
| University of Lethbridgelocation not on record | 1 |
| Ypsilanti, US | 1 |
| Norfolk, US | 1 |
| Keene State Universitylocation not on record | 1 |
| University of Manitobalocation not on record | 1 |
| Wellington, NZ | 1 |
| Chapel Hill, US | 1 |
| McGill University, Herbariumlocation not on record | 1 |
| Provo, US | 1 |
| Delaware State University, Claude E. Phillips Herbariumlocation not on record | 1 |
| Taipei, TW | 1 |
| Victoria, CA | 1 |
| Mississippi State, US | 1 |
| James F. Matthews Center for Biodiversity Studieslocation not on record | 1 |
| University of Winnipeglocation not on record | 1 |
| DULlocation not on record | 1 |
| Maryland Department of Natural Resourceslocation not on record | 1 |
| Bozeman, US | 1 |
| Minia, EG | 1 |
| Tacoma, US | 1 |
| GAlocation not on record | 1 |
| Auckland, NZ | 1 |
Where the DNA of Carex tenera 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.