Geum vernum, also known as spring avens, is a herbaceous perennial plant native to the northeastern part of the United States that grows in floodplains and rich woods in the late spring. The species was used to study the fruit evolution in allopolyploid species of Geum and in the preparation of an antimicrobial substance in 1948.
No narrative description available for this taxon yet.
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 Geum vernum has left across the world's sequence archives.
At a glance
DNA specimens3
Marker genes5
GenBank sequences5
eDNA detections2
Countries2
The DNA barcodea real sequence read deposited for this species
Geum vernum voucher JAG 0588 5.8S ribosomal RNA gene, partial sequence; internal transcribed spacer 2, complete sequence; and large subunit ribosomal RNA gene, partial sequence
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.
★matK1★rbcL2★rbcLa★ITS2★ITS2
plant barcodefungal barcode
06Genome at a glanceCCDB
The complete instruction manualGeum vernum 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 422×CCDB · book-ipcn67-71 · CCDB · Cave1957
CCDB · book-ipcn67-71 — ZHUKOVA, P. G. 1967. Karyology of some plants, cultivated in the Arctic-Alpine Botanical Garden. (In Russian). In N. A. Avrorin (ed.): Plantarum in Zonam Polarem Transportatio. II. Leningrad 1967, pp. 139-149.
CCDB · Cave1957 — Gajewski
n 211×CCDB · Cave1957
CCDB · Cave1957 — Gajewski
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 accuracy84% within 1 km
≤100 m 814≤1 km 202≤10 km 35>10 km 152
1 203 georeferenced · 293 without coordinates
Open the mapobservation + sensor1 496
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 accuracy56% within 1 km
≤100 m 93≤1 km 173≤10 km 192>10 km 19
477 georeferenced · 291 without coordinates
Open the institutions mapphysical evidence768
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 institutions55 of 78 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
Bloomington, US
124
Chongqing Museumlocation not on record
120
Saint Louis, US
79
Wuzhou, CN
63
Philadelphia, US
56
Pittsburg, US
26
Madison, US
25
Ann Arbor, US
22
Bronx, US
18
Museo civico La Terra e l'Uomo di Crocetta del Montellolocation not on record
17
Morgantown, US
16
University of Stellenboschlocation not on record
10
Tampa, US
10
Dekalb, US
9
Philadelphia, US
8
College Park, US
8
Williamsburg, US
8
McWane Science Centerlocation not on record
7
Chapel Hill, US
7
ASUlocation not on record
6
Fayetteville, US
6
Burlington, US
5
West Virginia Wesleyan Collegelocation not on record
5
Richmond, US
5
GB
4
Columbia, US
4
Little Rock, US
4
Bangkok, TH
4
Knoxville, US
4
Millersville, US
4
Kirksville, US
4
DOI/NPS, Selma to Montgomery National Historic Traillocation not on record
3
Mohonk Preservelocation not on record
3
Canadian Department of Agriculturelocation not on record
3
Museum of the Rockieslocation not on record
3
Johnson City, US
3
New Brunswick, US
2
Chadron, US
2
Emporia, US
2
Staten Island, US
2
Washington, US
2
St. Paul, US
2
University of Tennessee at Chattanoogalocation not on record
2
Chicago, US
2
Provo, US
2
Allentown, US
2
Lincoln, US
2
Toronto, CA
2
Jefferson City, US
2
Maryland Department of Natural Resourceslocation not on record
2
Phoenix, US
1
BAYLUlocation not on record
1
Pullman, US
1
DOI/NPS, Colonial National Historical Parklocation not on record
1
Davenport, US
1
EL PASO, US
1
Fairfax, US
1
Whitewater, US
1
Flagstaff, US
1
Whitehorse, CA
1
USP-IBlocation not on record
1
Brookings, US
1
Lubbock, US
1
Moscow State Universitylocation not on record
1
Northridge, US
1
Kunming, CN
1
Springfield, US
1
UMKClocation not on record
1
AUAlocation not on record
1
University of Southern Mississippilocation not on record
1
DOI/NPS, Greenbelt Parklocation not on record
1
China Agricultural Universitylocation not on record
1
Podgorica, ME
1
University of Guelph, OAC Herbariumlocation not on record
1
University of New Hampshirelocation not on record
1
Tuscaloosa, US
1
Boise, US
1
Oskarshamn, SE
1
78 institutions · 759 of 768 vouchered records shown · 8 without an institution code
09Environmental DNA2 detections
Where the DNA of Geum vernum 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
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 median9.30 °C 4.70–14.0
Seasonal swing summer↔winter25.3 °C
Max temp (day)12.4 °C 7.90–16.9
Min temp (night)6.50 °C 1.20–11.7
Precipitation76.4 mm/mo 64.6–88.2
Air humidity60.9 % 58.8–63.0
Moisture balance-14.5 mm/mo -40.3–11.3
Vapour deficit535 Pa 388–682
Wind speed3.30 m/s 2.60–4.10
Cloud cover47.6 % 44.6–50.6
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.
WikipediaWikimedia Foundation2 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility2 264 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI2 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics3 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↗