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 Commelina virginica has left across the world's sequence archives.
At a glance
Marker genes2
GenBank sequences2
The DNA barcodea real sequence read deposited for this species
Commelina virginica voucher Terry Holdsclaw#275 ribulose-1,5-bisphosphate carboxylase/oxygenase large subunit (rbcL) gene, complete cds; chloroplast
Marker genes sequenced
★ 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.
★matK1★rbcL1
plant barcode
06Genome at a glanceCCDB
The complete instruction manualCommelina virginica 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 = 60 n = 30
Ploidypolyploid inferred
Chromosome-count records — grouped by value · 2n = full set, n = gamete · click a value for sources & references
2n 601×CCDB · book-ipcn67-71
CCDB · book-ipcn67-71 — LEWIS, w. H.' Y. SUDA, & R. L. OLIVER. 1967. In Chromosome numbers of phanerogams. 2. Ann. Missouri Bot. Gard. 54: 178-181.
n 302×CCDB · eflora · CCDB · Cave1962
CCDB · eflora
CCDB · Cave1962 — Lewis et alo 1962
Ploidy records — measured levels and diploid/polyploid inferences · click for sources
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 1 584≤1 km 295≤10 km 90>10 km 189
2 158 georeferenced · 493 without coordinates
Open the mapobservation + sensor2 651
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 accuracy58% within 1 km
≤100 m 53≤1 km 132≤10 km 98>10 km 35
318 georeferenced · 389 without coordinates
Open the institutions mapphysical evidence707
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 institutions65 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
Jackson, US
50
University of Stellenboschlocation not on record
35
Bloomington, US
33
Saint Louis, US
31
Bronx, US
27
Jena Microbial Resource Collectionlocation not on record
26
Columbia, US
21
Fayetteville, US
21
Chapel Hill, US
20
DOI/NPS, Mississippi National River & Recreation Arealocation not on record
19
Fort Worth, US
18
Williamsburg, US
18
Bangkok, TH
18
College Park, US
15
UNESP-ISlocation not on record
14
Wuzhou, CN
13
GAlocation not on record
13
Henderson State Universitylocation not on record
12
Tuscaloosa, US
12
Mississippi State, US
11
Philadelphia, US
11
Tampa, US
11
Millersville, US
9
BAYLUlocation not on record
7
Chongqing Museumlocation not on record
7
AUAlocation not on record
7
Austin, US
7
EL PASO, US
7
US
7
Norfolk, US
6
Tennessee Technological Universitylocation not on record
6
Edmonton, CA
6
China Agricultural Universitylocation not on record
6
Valdosta State Universitylocation not on record
6
Clemson, US
6
University of Tennessee at Chattanoogalocation not on record
5
Conway, US
5
Davenport, US
5
Little Rock, US
5
Université de Bordeauxlocation not on record
4
University of Southern Mississippilocation not on record
4
James F. Matthews Center for Biodiversity Studieslocation not on record
4
Knoxville, US
4
Conway, US
4
Tall Timbers Research Stationlocation not on record
4
San Jose State University, Museum of Birds and Mammalslocation not on record
4
Maryland Department of Natural Resourceslocation not on record
3
Dover, US
3
Universidad de Caldas (UCaldas)location not on record
3
Universidade Federal do Maranhãolocation not on record
3
Dekalb, US
3
Phoenix, US
3
Miami, US
2
BIO-UNIPIlocation not on record
2
Cambridge, US
2
UnBlocation not on record
2
US
2
LINUlocation not on record
2
Washington, US
2
Lubbock, US
2
Oskarshamn, SE
2
ASUlocation not on record
2
Flagstaff, US
2
Burlington, US
2
Auckland, NZ
2
Vancouver, CA
2
Due West, US
1
Russellville, US
1
Stephenville, US
1
University of North Carolina at Pembrokelocation not on record
1
Asheville, US
1
Audubon Society -- Silver Bluff Audubon Center and Sanctuarylocation not on record
1
US
1
Lake Charles, US
1
Brasília, BR
1
Pittsburg, US
1
Kew, GB
1
Tempe, US
1
Ann Arbor, US
1
DOI/NPS, Colonial National Historical Parklocation not on record
1
Canadian Department of Agriculturelocation not on record
1
Long Beach, US
1
Fairfax, US
1
San Angelo, US
1
Universidad Nacional de Colombia (UNAL)location not on record
1
Chadron, US
1
Institut de Biologia Evolutiva, (CSIC-UPF)location not on record
1
Instituto do Meio Ambientelocation not on record
1
Fredericton Stock Culture Collectionlocation not on record
1
Pontificia Universidad Javeriana (PUJ)location not on record
1
Emporia, US
1
Logan, US
1
Cenargenlocation not on record
1
UTFPR-CPlocation not on record
1
MAlocation not on record
1
Denton, US
1
South Kensington, GB
1
Campo Mourão, BR
1
UEPAlocation not on record
1
PUC-RSlocation not on record
1
Northridge, US
1
Morgantown, US
1
Staten Island, US
1
Beijing, CN
1
Florida Museum of Natural History- Zoology, Paleontology & Paleobotanylocation not on record
1
Departamento de Sistematica e Ecologialocation not on record
1
106 institutions · 670 of 707 vouchered records shown · 37 without an institution code
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility3 358 records↗
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
GLoBIGlobal Biotic Interactionsbiotic interactions↗