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 Polygonum bistorta has left across the world's sequence archives.
At a glance
DNA specimens5
Marker genes4
eDNA detections2
Countries2
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.
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plant barcodefungal barcode
08Occurrence & distribution
Record type2 963 records
Wild obs. + sensor2 458
Museum / vouchered465
Cultivated / captive40
Origin
Introduced33
Range
Area of Occupancy AOO6 160 km²
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Coordinate accuracy95% within 1 km
≤100 m 315≤1 km 1 774≤10 km 60>10 km 56
2 205 georeferenced · 253 without coordinates
Open the mapobservation + sensor2 458
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 accuracy33% within 1 km
≤1 km 5≤10 km 4>10 km 6
15 georeferenced · 450 without coordinates
Open the institutions mapphysical evidence465
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 33
33 georeferenced · 7 without coordinates
Open the mapnot free-living40
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 institutions26 of 57 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
Beijing, CN
166
Nanjing, CN
42
Yangling, CN
35
Chengdu, CN
29
SXTCMlocation not on record
19
Beijing, CN
15
Xining, CN
10
Beijing Normal Universitylocation not on record
10
Urumqi, CN
9
Shanxi Institute of Biologylocation not on record
8
Mlocation not on record
8
Winterthur, CH
6
“Manash Kozybayev North Kazakhstan University" NPLClocation not on record
6
J. Rusek Collectionlocation not on record
6
Zhengzhou, CN
6
Vancouver, CA
5
EMTCMlocation not on record
4
Jiangxi College of Educationlocation not on record
4
Xian, CN
4
Guilin, CN
4
Anhui Normal Universitylocation not on record
4
Ischia Marine Centrelocation not on record
3
Xinxiang, CN
3
Dresden, DE
3
Central China Normal Universitylocation not on record
3
Changsha, CN
3
Seoul, KR
3
Guangzhou, CN
3
UGentlocation not on record
3
Chongqing, CN
3
Institut und Museum fuer Geologie und Palaeontologielocation not on record
2
Peking Universitylocation not on record
2
Ivano-Frankove, UA
2
Hangzhou, CN
2
Inner Mongolia Universitylocation not on record
2
Wuhan, CN
2
Tianjin Natural History Museumlocation not on record
2
Strecker Museum, Baylor Universitylocation not on record
2
Hebei Normal Universitylocation not on record
2
Shanghai, CN
2
GJOlocation not on record
1
Northeastern Forestry Universitylocation not on record
1
Guiyang, CN
1
Göteborg, SE
1
Chinese Academy of Forestrylocation not on record
1
WTUlocation not on record
1
Zhejiang Universitylocation not on record
1
Canadian Museum of Naturelocation not on record
1
BRNUlocation not on record
1
SXPHClocation not on record
1
Kunming, CN
1
Musée des Confluenceslocation not on record
1
Chongqing Natural History Museumlocation not on record
1
WNNUlocation not on record
1
LDlocation not on record
1
Herbarium of South China Botanical Gardenlocation not on record
1
EL PASO, US
1
57 institutions · 464 of 465 vouchered records shown · 1 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 DNA2 detections
Where the DNA of Polygonum bistorta 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 found2
Studies independent surveys1
Countries2
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 2 detections have coordinates
Open the map2 countries0
Acidic Dwarf Shrub Tundra with 20% of lichen…
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 median9.50 °C 5.90–13.1
Seasonal swing summer↔winter35.7 °C
Max temp (day)14.4 °C 10.8–17.9
Min temp (night)4.30 °C 0.1–8.50
Precipitation112 mm/mo 77.2–146
Air humidity58.1 % 57.9–58.3
Moisture balance10.4 mm/mo -33.5–54.2
Vapour deficit521 Pa 394–647
Wind speed2.70 m/s 2.50–2.90
Cloud cover54.3 % 39.7–68.9
CHELSA 1981–2010, ~9 km grid, at location & month of 2 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.
