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 Dahlia imperialis has left across the world's sequence archives.
At a glance
Marker genes2
GenBank sequences4
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.
★rbcL2★ITS2
plant barcodefungal barcode
06Genome at a glanceCCDB
The complete instruction manualDahlia imperialis 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 — Jose, J. C. & P. M. Mathew. 1995. Chromosome numbers in the south Indian Heliantheae (Compositae). Compositae Newslett. 27: 7–10.
CCDB · ipcn-api-dl — Gatt, M., H. Ding, K. Hammett & B. Murray. 1998. Polyploidy and evolution in wild and cultivated Dahlia species. Ann. Bot. (Oxford) 81: 647–656.
CCDB · ipcn-api-dl — Gatt, M., K. Hammett & B. Murray. 2000. Interspecific hybridization and the analysis of meiotic chromosome pairing in Dahlia (Asteraceae--Heliantheae) species with x = 16. Pl. Syst. Evol. 221: 25–33.
CCDB · ipcn-api-dl — Gatt, M. K., K. R. W. Hammett & B. G. Murray. 2000. Molecular phylogeny of the genus Dahlia Cav. (Asteraceae, Heliantheae--Coreopsidinae) using sequences derived from the internal transcribed spacers of nuclear ribosomal DNA. Bot. J. Linn. Soc. 133(2): 229–239.
CCDB · book-indian_vol1 — Lawrence, W. J. C. 1929, 1931a ; Sol- brig, O. T. et al. 1972 ; Singh, V. K. & Roy, S. K. 1973b
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 439≤1 km 150≤10 km 103>10 km 25
717 georeferenced · 236 without coordinates
Open the mapobservation + sensor953
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 accuracy86% within 1 km
≤100 m 58≤1 km 9≤10 km 10>10 km 1
78 georeferenced · 74 without coordinates
Open the institutions mapphysical evidence152
Cultivated / Captivenot free-living
A living individual in a botanical garden, zoo or nursery — cultivated or kept, not free-living.
Coordinate accuracy50% within 1 km
≤1 km 1≤10 km 1
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 institutions21 of 30 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
Durango, MX
26
Museo Nacional de Costa Rica (MNCR)location not on record
25
Tuxtla Gutiérrez, MX
12
Austin, US
12
Tuxtla Gutiérrez, MX
8
Mexico City, MX
7
Universidad de Caldas (UCaldas)location not on record
7
Tapachula, MX
7
University of Stellenboschlocation not on record
7
Dekalb, US
6
Austin, US
5
Herbarium of the Department of Botany, University of Tokyolocation not on record
3
Mérida, MX
3
Mexico City, MX
2
Guatemala City, GT
2
Clemson, US
2
Universidad de La Salle (La Salle)location not on record
2
Tlalnepantla, MX
1
Mexico City, MX
1
Mexico City, MX
1
LDlocation not on record
1
Pontificia Universidad Javeriana (PUJ)location not on record
1
Universidad de Antioquia (UdeA)location not on record
1
EL PASO, US
1
San Luis Obispo, US
1
Saint Louis, US
1
Chapingo, MX
1
Miami, US
1
San Francisco, US
1
ASUlocation not on record
1
30 institutions · 149 of 152 vouchered records shown · 3 without an institution code
Cultivated / Captivenot free-living
A living individual in a botanical garden, zoo or nursery — cultivated or kept, not free-living.
GBIFGlobal Biodiversity Information Facility1 107 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↗