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 Spermacoce ocymoides has left across the world's sequence archives.
At a glance
DNA specimens9
Marker genes2
eDNA detections4
Countries1
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.
★matK★rbcL
plant barcode
06Genome at a glanceCCDB
The complete instruction manualSpermacoce ocymoides 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 = 40 n = 20
Ploidydiploid inferred
Chromosome-count records — grouped by value · 2n = full set, n = gamete · click a value for sources & references
2n 401×CCDB · ipcn-api-dl
CCDB · ipcn-api-dl — Shivakumar, P. M. & M. S. Chennaveeraiah. 1983. In: IOPB chromosome number reports LXXVIII. Taxon 32: 140.
n 141×CCDB · Cave1962
CCDB · Cave1962 — Lewis 1962d
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 accuracy70% within 1 km
≤100 m 6≤1 km 1≤10 km 1>10 km 2
10 georeferenced · 19 without coordinates
Open the mapobservation + sensor29
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 accuracy85% within 1 km
≤100 m 12≤1 km 32≤10 km 5>10 km 3
52 georeferenced · 207 without coordinates
Open the institutions mapphysical evidence259
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 institutions19 of 42 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
Baroda, IN
29
St. Augustine, TT
15
Yaoundé, CM
15
Institut fur Allgemeine Mikrobiologielocation not on record
9
Cibinong Science Center, Herbarium Bogorienselocation not on record
8
Durango, MX
8
Kew, GB
7
Universidad Nacional de Colombia (UNAL)location not on record
6
HNBlocation not on record
6
Uppsala, SE
5
Universidade Federal do Rio Grande do Nortelocation not on record
4
Chaguaramas, TT
3
Instituto do Meio Ambientelocation not on record
3
Bronx, US
3
Pondicherry, IN
3
MeiseBGlocation not on record
3
Xiamen, CN
2
Pontificia Universidad Javeriana (PUJ)location not on record
2
Saint Louis, US
2
Moscow State Universitylocation not on record
2
UFMSlocation not on record
2
ESALQlocation not on record
1
UFRRJlocation not on record
1
CJBGlocation not on record
1
Universidad de Caldas (UCaldas)location not on record
1
UFPRlocation not on record
1
Chongqing Museumlocation not on record
1
JBRJlocation not on record
1
NO DISPONIBLElocation not on record
1
Paris, FR
1
Herbarium of the Department of Botany, University of Tokyolocation not on record
1
Guatemala City, GT
1
Wuzhou, CN
1
Coimbra, PT
1
ASUlocation not on record
1
Millersville, US
1
Université du Lomélocation not on record
1
Mexico City, MX
1
Universidad de la Amazonia (UniAmazonia)location not on record
1
University of Dar es Salaamlocation not on record
1
Chapingo, MX
1
Edinburgh, GB
1
42 institutions · 158 of 259 vouchered records shown · 101 without an institution code
09Environmental DNA4 detections
Where the DNA of Spermacoce ocymoides 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 found4
Studies independent surveys1
Countries1
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 4 detections have coordinates
Open the map1 country0
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 median26.1 °C 26.1–26.1
Seasonal swing summer↔winter1.10 °C
Max temp (day)29.5 °C
Min temp (night)22.6 °C
Precipitation269 mm/mo
Air humidity68.1 %
Moisture balance133 mm/mo
Vapour deficit1,080 Pa
Wind speed1.20 m/s
Cloud cover57.6 %
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 Facility289 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI4 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics9 specimens↗
GRIN TaxonomyUSDA-ARSdistribution & uses↗
Open Tree of LifeOpenTreephylogeny backbone↗
CCDBChromosome Counts DB · Tel Aviv U.genome & karyotype↗
PloiDBPloidy Databasegenome & karyotype