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 Sporobolus compositus has left across the world's sequence archives.
At a glance
DNA specimens12
Marker genes4
GenBank sequences10
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.
★rbcL5★rbcLa★ITS5★ITS2
plant barcodefungal barcode
06Genome at a glanceCCDB
The complete instruction manualSporobolus compositus 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 = 54 n = 27
Ploidypolyploid inferred
Chromosome-count records — grouped by value · 2n = full set, n = gamete · click a value for sources & references
2n 541×CCDB · book-ipcn75-78
CCDB · book-ipcn75-78 — Riggins 1977
n 272×CCDB · ipcn-api-dl · CCDB · book-ipcn67-71
CCDB · ipcn-api-dl — Davidse, G. 1981. Chromosome numbers of miscellaneous angiosperms. Ann. Missouri Bot. Gard. 68: 222–223.
CCDB · book-ipcn67-71 — REEDER, J.R. 1968. Notes on Mexican grasses VIII. Miscellaneous chromosome numbers - 2. Bull. Torrey Bot. Club 95: 69-86.
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 accuracy82% within 1 km
≤100 m 227≤1 km 15≤10 km 7>10 km 45
294 georeferenced · 109 without coordinates
Open the mapobservation + sensor403
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 accuracy26% within 1 km
≤100 m 11≤1 km 25≤10 km 82>10 km 19
137 georeferenced · 364 without coordinates
Open the institutions mapphysical evidence501
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 institutions45 of 65 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
International Salmonella Centre (W.H.O.)location not on record
131
Emporia, US
35
Spearfish, US
34
Chongqing Museumlocation not on record
29
Denver, US
23
Austin, US
20
Ann Arbor, US
17
University of Stellenboschlocation not on record
14
Fort Worth, US
13
Musee des Dinosaures d'Esperaza (Aude)location not on record
10
Dekalb, US
9
BAYLUlocation not on record
8
Lincoln, US
8
Saint Louis, US
7
Lubbock, US
6
Flagstaff, US
6
Missoula, US
6
Vancouver, CA
4
Museum of the Rockieslocation not on record
4
Madison, US
3
Albuquerque, US
3
University of British Columbia, Herbariumlocation not on record
3
Auckland, NZ
3
Bronx, US
2
San Angelo, US
2
Logan, US
2
xMDC-Clintonlocation not on record
2
Jefferson City, US
2
McWane Science Centerlocation not on record
2
Jena Microbial Resource Collectionlocation not on record
2
ASUlocation not on record
2
University of New Hampshirelocation not on record
2
Dresden, DE
2
Philadelphia, US
2
Chapel Hill, US
2
Fargo, US
2
Chadron, US
2
Bozeman, US
2
Corvallis, US
1
DOI/NPS, Selma to Montgomery National Historic Traillocation not on record
1
LINUlocation not on record
1
Miami, US
1
Knoxville, US
1
US
1
Agriculture and Agri-Food Canadalocation not on record
1
San Diego, US
1
Whitehorse, CA
1
Bureau of Land Management, Caliente Field Officelocation not on record
1
Tempe, US
1
Museo civico La Terra e l'Uomo di Crocetta del Montellolocation not on record
1
Burlington, US
1
Beijing, CN
1
Bend, US
1
Boise, US
1
Provo, US
1
Texas Lutheran Universitylocation not on record
1
BClocation not on record
1
Cenargenlocation not on record
1
Claremont, US
1
Pittsburg, US
1
EL PASO, US
1
Brasília, BR
1
Brookings, US
1
Saint John, CA
1
Whitewater, US
1
65 institutions · 453 of 501 vouchered records shown · 48 without an institution code
09Environmental DNA7 detections
Where the DNA of Sporobolus compositus 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
Countries1
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 7 detections have coordinates
Open the map1 country0
dry ground near entrance lanewayNear shore in sandy wash at spring runoff hi…Sandy edge of pool in Thompson River channel…local, West of main remnant along North rail…Ponderosa pine slope by paved road to new su…
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 median16.4 °C 13.0–17.8
Seasonal swing summer↔winter23.6 °C
Max temp (day)23.3 °C 19.5–24.2
Min temp (night)10.5 °C 7.70–11.5
Precipitation27.9 mm/mo 24.5–35.2
Air humidity52.2 % 50.0–53.6
Moisture balance-67.5 mm/mo -109–-54.3
Vapour deficit903 Pa 715–991
Wind speed2.80 m/s 1.60–3.00
Cloud cover39.8 % 34.2–41.3
CHELSA 1981–2010, ~9 km grid, at location & month of 4 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 Facility904 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI7 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics12 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
GLoBIGlobal Biotic Interactionsbiotic interactions↗