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 Cirsium discolor has left across the world's sequence archives.
At a glance
DNA specimens23
Marker genes6
GenBank sequences10
eDNA detections14
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.
★matK4★rbcL3★rbcLa★ITS3★ITS2trnH-psbA
plant barcodefungal barcodemarker
06Genome at a glanceCCDB · TreeOfSex
The complete instruction manualCirsium discolor 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.
CCDB · ipcn-api-dl — Dabydeen, S. 1997. Natural hybridization in the genus Cirsium: C. altissimum x C. discolor-cytological and morphological evidence. Rhodora 99: 152–160.
CCDB · ipcn-api-dl — Bloom, W. L. 1977. Chromosomal differentiation between Cirsium discolor and C. muticum and the origin of supernumerary chromosomes. Syst. Bot. 2: 1–13.
CCDB · book-ipcn67-71 — OWNBEY, G.B., & W.A. OLSON. 1969. Cytotaxonomic notes on the species of Cirsium native to the Southeastern United States. Rhodora 71: 285-296.
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Coordinate accuracy87% within 1 km
≤100 m 3 959≤1 km 821≤10 km 285>10 km 419
5 484 georeferenced · 1 073 without coordinates
Open the mapobservation + sensor6 557
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 accuracy39% within 1 km
≤100 m 48≤1 km 303≤10 km 503>10 km 52
906 georeferenced · 621 without coordinates
Open the institutions mapphysical evidence1 527
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 institutions71 of 106 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
Philadelphia, US
246
Oregon State Universitylocation not on record
118
St. Paul, US
103
Madison, US
99
Chicago, US
90
Bronx, US
86
Bloomington, US
64
Saint Louis, US
57
Chongqing Museumlocation not on record
47
Allentown, US
44
Williamsburg, US
40
University of Stellenboschlocation not on record
36
Ann Arbor, US
29
New Brunswick, US
25
Burlington, US
24
New Haven, US
18
Wuzhou, CN
18
Montréal, CA
17
College Park, US
16
Bangkok, TH
15
Québec, CA
12
Pittsburg, US
12
University of Wisconsinlocation not on record
10
Staten Island, US
10
DOI/NPS, Mississippi National River & Recreation Arealocation not on record
9
Jackson, US
9
Fredericksburg, US
9
McWane Science Centerlocation not on record
9
Little Rock, US
8
Davenport, US
8
Dekalb, US
7
University of New Hampshirelocation not on record
7
DOI/NPS, Greenbelt Parklocation not on record
6
Mississippi State, US
6
Green Bay, US
5
Springfield, US
5
Millersville, US
5
San Luis Obispo, US
5
Fort Worth, US
5
Whitewater, US
4
US
4
Knoxville, US
4
Chicago, US
4
Chapel Hill, US
4
University of Tennessee at Chattanoogalocation not on record
4
DOI/NPS, Selma to Montgomery National Historic Traillocation not on record
4
Kirksville, US
4
Norfolk, US
4
Science Museum of Minnesotalocation not on record
3
Hudson, US
3
Fairfax, US
3
Waverly, US
3
Philadelphia, US
3
Washington, US
3
GB
3
Canadian Department of Agriculturelocation not on record
3
China Agricultural Universitylocation not on record
3
Museum of the Rockieslocation not on record
3
Richmond, US
3
University of Guelph, OAC Herbariumlocation not on record
3
Meguro Parasitological Museumlocation not on record
3
Morgantown, US
3
Wlocation not on record
2
Lincoln, US
2
Université Lavallocation not on record
2
Mohonk Preservelocation not on record
2
Harrisonburg, US
2
Chadron, US
2
Minia, EG
2
Macomb, US
2
Cincinnati, US
2
Black Rock Forest Consortiumlocation not on record
2
Emporia, US
2
Montréal, CA
2
Lubbock, US
2
Museo civico La Terra e l'Uomo di Crocetta del Montellolocation not on record
2
Columbus State Universitylocation not on record
2
Jefferson City, US
2
Dover, US
2
Riverside, US
2
Western Carolina Universitylocation not on record
2
Chicago, US
2
IDElocation not on record
2
WINlocation not on record
1
University of Alberta Museumslocation not on record
1
Trois-Rivières, CA
1
Smithsonian Institutionlocation not on record
1
Columbus State University Herbariumlocation not on record
1
Miami, US
1
Universite de Montreal, L'Herbier Marie-Victorinlocation not on record
1
Görlitz, DE
1
AUAlocation not on record
1
Beijing, CN
1
Fayetteville, US
1
Henderson State Universitylocation not on record
1
Elikins, US
1
Northridge, US
1
Johnson City, US
1
San Angelo, US
1
Toronto, CA
1
DULlocation not on record
1
Tuscaloosa, US
1
Lord Fairfax Community Collegelocation not on record
1
University of Southern Mississippilocation not on record
1
Flagstaff, US
1
LINUlocation not on record
1
106 institutions · 1 482 of 1 527 vouchered records shown · 44 without an institution code
09Environmental DNA14 detections
Where the DNA of Cirsium discolor 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 found14
Studies independent surveys1
Countries2
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 14 detections have coordinates
Open the map2 countries0
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.
Modelled climatemodelled
−15°Ctemperature across detection sites+40°C
Temperature median12.5 °C 0–23.3
Seasonal swing summer↔winter27.0 °C
Max temp (day)18.4 °C 3.20–29.1
Min temp (night)8.20 °C -2.50–19.1
Precipitation94.2 mm/mo 78.5–103
Air humidity57.9 % 56.9–60.9
Moisture balance-27.9 mm/mo -45.2–21.0
Vapour deficit733 Pa 241–1,207
Wind speed3.70 m/s 2.20–5.90
Cloud cover41.1 % 29.2–52.2
CHELSA 1981–2010, ~9 km grid, at location & month of 10 detection points · median with p10–p90 · reflects where sampling happened, not only the true niche
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.
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility8 085 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI14 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics23 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
Tree of SexTree of Sex Consortiumgenome & karyotype↗