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 Symphyotrichum boreale has left across the world's sequence archives.
At a glance
DNA specimens106
Marker genes6
GenBank sequences10
eDNA detections97
Countries1
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.
★COI-5P★matK1★rbcL5★rbcLa★ITS4★ITS2
animal barcodeplant barcodefungal barcode
06Genome at a glanceCCDB
The complete instruction manualSymphyotrichum boreale 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.
Chromosome-count records — grouped by value · 2n = full set, n = gamete · click a value for sources & references
2n 164×CCDB · ipcn-api-dl
CCDB · ipcn-api-dl — Semple, J. C. 1983. Range expansion of Heterotheca camporum (Compositae: Asteraceae) in the southeastern United States. Brittonia 35(2): 140–146.
CCDB · ipcn-api-dl — Semple, J. C. & L. Brouillet. 1980. Chromosome numbers and satellite chromosome morphology in Aster and Lasallea. Amer. J. Bot. 67(7): 1027–1039.
CCDB · ipcn-api-dl — Jones, A. G. 1980. Data on chromosome numbers in Aster (Asteraceae) with comments on the status and relationships of certain North American species. Brittonia 32(2): 240–261.
CCDB · ipcn-api-dl — Love, A. & D. Love. 1982. In: A Löve (ed.), IOPB chromosome number reports LXXV. Taxon 31(2): 344–360.
2n 323×CCDB · ipcn-api-dl · CCDB · Cave1963
CCDB · ipcn-api-dl — Semple, J. C. & J. G. Chmielewski. 1987. Chromosome number determinations in fam. Compositae, tribe Astereae. II. Additional counts. Rhodora 89: 319–325.
CCDB · ipcn-api-dl — Semple, J. C. 1981. In Chromosome number reports LXXll. Taxon 30: 703–704.
CCDB · Cave1963 — Van Faasen 1963
2n 641×CCDB · ipcn-api-dl
CCDB · ipcn-api-dl — Semple, J. C., J. Zhang & C. Xiang. 1993. Chromosome number determinations in fam. Compositae, tribe Astereae. V. Eastern North American taxa. Rhodora 95: 234–253.
n 161×CCDB · book-ipcn73-74
CCDB · book-ipcn73-74 — VAN FAASEN, P., & F.F. STERK. 1973. Chromosome numbers in Aster. Rhodora 75: 26-33.
n 271×CCDB · book-ipcn67-71
CCDB · book-ipcn67-71 — TAYLOR, R. L. 1967. In IOPB chromosome number reports XIII. Taxon 16: 445-461.
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 accuracy75% within 1 km
≤100 m 191≤1 km 34≤10 km 6>10 km 71
302 georeferenced · 178 without coordinates
Open the mapobservation + sensor480
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 accuracy52% within 1 km
≤100 m 50≤1 km 206≤10 km 210>10 km 31
497 georeferenced · 507 without coordinates
Open the institutions mapphysical evidence1 004
Cultivated / Captivenot free-living
A living individual in a botanical garden, zoo or nursery — cultivated or kept, not free-living.
Coordinate accuracy0% within 1 km
≤10 km 2
2 georeferenced
Open the mapnot free-living2
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 institutions39 of 59 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
St. Paul, US
234
Montréal, CA
98
Museo civico La Terra e l'Uomo di Crocetta del Montellolocation not on record
72
Bronx, US
61
Ann Arbor, US
51
Université Lavallocation not on record
45
WINlocation not on record
40
Wuzhou, CN
35
Saint John, CA
32
Burlington, US
24
University of Alberta Museumslocation not on record
23
Madison, US
22
Québec, CA
21
Green Bay, US
18
Moscow, US
18
Chadron, US
18
Vancouver, CA
17
Mount Pleasant, US
15
Stockholm, SE
15
Acadia Universitylocation not on record
13
Whitehorse, CA
12
Victoria, CA
11
Toronto, CA
11
Missoula, US
11
WTUlocation not on record
7
Dekalb, US
7
Spearfish, US
5
USFS/BHSClocation not on record
4
Bloomington, US
4
Royal Botanical Gardenslocation not on record
4
Pullman, US
3
New Brunswick, US
3
University of New Hampshirelocation not on record
3
Research Collection of B. A. Bennettlocation not on record
3
San Luis Obispo, US
2
Churchill Northern Studies Centrelocation not on record
2
Emporia, US
2
McWane Science Centerlocation not on record
2
DULlocation not on record
2
Whitewater, US
2
DOI/NPS, Greenbelt Parklocation not on record
2
B.A. Bennett Herbariumlocation not on record
1
Denver, US
1
Moscow State Universitylocation not on record
1
Centre for Biodiversity Genomicslocation not on record
1
Flagstaff, US
1
University of Stellenboschlocation not on record
1
Provo, US
1
Chapel Hill, US
1
Anchorage, US
1
Chicago, US
1
Pittsburg, US
1
Oswego, US
1
Saint Louis, US
1
Musee des Dinosaures d'Esperaza (Aude)location not on record
1
ASUlocation not on record
1
Austin, US
1
Fargo, US
1
Mississippi State, US
1
59 institutions · 992 of 1 004 vouchered records shown · 12 without an institution code
Cultivated / Captivenot free-living
A living individual in a botanical garden, zoo or nursery — cultivated or kept, not free-living.
09Environmental DNA97 detections
Where the DNA of Symphyotrichum boreale 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 found97
Studies independent surveys1
Countries1
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 97 detections have coordinates
Open the map1 country0
river edge on mossy seeps with Epilobium pal…
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 median11.3 °C 9.80–15.4
Seasonal swing summer↔winter37.6 °C
Max temp (day)16.1 °C 14.4–20.8
Min temp (night)8.70 °C 6.50–10.3
Precipitation82.8 mm/mo 54.8–96.1
Air humidity60.5 % 54.2–61.6
Moisture balance-7.70 mm/mo
Vapour deficit518 Pa 478–790
Wind speed2.40 m/s
Cloud cover50.0 % 43.5–58.0
CHELSA 1981–2010, ~9 km grid, at location & month of 8 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 Facility1 486 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI97 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics106 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
WikidataWikimedia Foundationstructured facts↗