Carex nigromarginata is a North American sedge which grows on acid soils in dry woodland, thickets, and roadside, and similar ruderal habitats in partial shade or in full sun, often near streams at elevations of . The plants grow in dense clumps, often forming circular patterns on forest floors or roadsides. 2n = 36.Ball, P. W. 2002. Carex nigromarginata. In: Flora of North America Editorial Committee, eds. 1993+ (vol. 23, 2002). Flora of North America North of Mexico. 16+ vols. New York and Oxford. Vol. 23, pp. 534, 541-543.
No narrative description available for this taxon yet.
Compounds documented for Carex nigromarginata across natural-product and food-composition databases — not just the ~150 nutrients on a classic label ("nutritional dark matter").
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 nigromarginata has left across the world's sequence archives.
At a glance
DNA specimens7
Marker genes5
GenBank sequences5
eDNA detections7
Countries2
The DNA barcodea real sequence read deposited for this species
★ 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.
★matK★rbcL2★rbcLa★ITS3★ITS2
plant barcodefungal barcode
06Genome at a glanceCCDB
The complete instruction manualCarex nigromarginata 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.
Chromosomes2n = 34 n = 17
Chromosome-count records — grouped by value · 2n = full set, n = gamete · click a value for sources & references
2n 341×CCDB · book-atlas-flowering-plants
CCDB · book-atlas-flowering-plants — Wahl 1940
08Occurrence & distribution
Record type1 242 records
Wild obs. + sensor166
Museum / vouchered1 076
Range
Area of Occupancy AOO3 612 km²
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Coordinate accuracy75% within 1 km
≤100 m 97≤1 km 12≤10 km 1>10 km 36
146 georeferenced · 20 without coordinates
Open the mapobservation + sensor166
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.
Coordinate accuracy47% within 1 km
≤100 m 65≤1 km 199≤10 km 259>10 km 34
557 georeferenced · 519 without coordinates
Open the institutions mapphysical evidence1 076
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
10Collections & institutions
Holding institutions50 of 75 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
Jackson, US
179
Philadelphia, US
111
Chapel Hill, US
97
Bronx, US
88
Madison, US
58
Chicago, US
32
University of Stellenboschlocation not on record
31
Ann Arbor, US
29
Chongqing Museumlocation not on record
28
Bangkok, TH
27
Williamsburg, US
25
Oregon State Universitylocation not on record
22
Jena Microbial Resource Collectionlocation not on record
20
San Angelo, US
19
Tuscaloosa, US
19
Knoxville, US
18
Mississippi State, US
16
GAlocation not on record
14
College Park, US
12
Dover, US
10
Saint Louis, US
10
Philadelphia, US
10
Miami, US
10
Allentown, US
9
Clemson, US
9
Johnson City, US
9
Bloomington, US
9
Columbia, US
8
University of Tennessee at Chattanoogalocation not on record
8
Fayetteville, US
8
Maryland Department of Natural Resourceslocation not on record
7
University of Southern Mississippilocation not on record
7
Richmond, US
6
Christchurch, NZ
6
BAYLUlocation not on record
5
McWane Science Centerlocation not on record
5
Florida Museum of Natural History- Zoology, Paleontology & Paleobotanylocation not on record
5
San Jose State University, Museum of Birds and Mammalslocation not on record
5
Morgantown, US
5
DOI/NPS, Mississippi National River & Recreation Arealocation not on record
4
Vancouver, CA
4
University of Wisconsinlocation not on record
4
US
4
Auckland, NZ
3
Mohonk Preservelocation not on record
3
Museo civico La Terra e l'Uomo di Crocetta del Montellolocation not on record
3
Wuzhou, CN
3
Minia, EG
3
Norfolk, US
3
WTUlocation not on record
3
AUAlocation not on record
3
Fort Worth, US
2
Little Rock, US
2
Elikins, US
2
Montréal, CA
2
DOI/NPS, Little Rock Central High School National Historic Sitelocation not on record
2
James F. Matthews Center for Biodiversity Studieslocation not on record
2
Millersville, US
2
Tall Timbers Research Stationlocation not on record
2
BClocation not on record
2
New Haven, US
2
Acadia Universitylocation not on record
1
Asheville, US
1
Tampa, US
1
Mexico City, MX
1
University of Western Ontariolocation not on record
1
Burlington, US
1
Moscow, US
1
Ypsilanti, US
1
Fairfax, US
1
Due West, US
1
Edmonton, CA
1
Staten Island, US
1
University of South Carolina Salkehatchielocation not on record
1
Kew, GB
1
75 institutions · 1 070 of 1 076 vouchered records shown · 6 without an institution code
09Environmental DNA7 detections
Where the DNA of Carex nigromarginata 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
Detections DNA found7
Studies independent surveys1
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 7 detections have coordinates
Open the map0 countries0
On serpentine gravel.On fractured rock exposure.
How strong is each trace?
DNA read depthRead counts were not reported for this species — the map shows presence only, not how strong each trace was.
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.
WikipediaWikimedia Foundation4 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility1 242 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI7 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics7 specimens↗
NCBIUS National Library of Medicinesequences↗
LOTUSNatural Products (Wikidata)compounds↗
Open Tree of LifeOpenTreephylogeny backbone↗
CCDBChromosome Counts DB · Tel Aviv U.genome & karyotype↗
GLoBIGlobal Biotic Interactionsbiotic interactions↗