Eleocharis flavescens is a perennial flowering plant species called bright green spikerush, pale spike-rush, or wrinkle-sheathed spike-rush; it is a type of spikerushes belonging to Juncaceae. It is clump-forming species that also spreads into colonies. It is a small species that looks similar to other Spikerush species. It is native to temperate North America, the West Indies, and South America.
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 Eleocharis flavescens has left across the world's sequence archives.
At a glance
DNA specimens17
Marker genes8
GenBank sequences10
eDNA detections21
Countries2
The DNA barcodea real sequence read deposited for this species
Eleocharis flavescens var. olivacea voucher CCDB-18294-A08 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.
The complete instruction manualEleocharis flavescens 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 — Schuyler, A. E. 1977. Chromosome observations on some eastern North American Eleocharis (Cyperaceae). Brittonia 29: 129–133.
CCDB · eflora
08Occurrence & distribution
Record type912 records
Wild obs. + sensor81
Museum / vouchered828
Other3
Origin
Native70
Introduced20
Range
Area of Occupancy AOO2 448 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 accuracy63% within 1 km
≤100 m 30≤1 km 15≤10 km 13>10 km 14
72 georeferenced · 9 without coordinates
Open the mapobservation + sensor81
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 accuracy48% within 1 km
≤100 m 27≤1 km 68≤10 km 68>10 km 33
196 georeferenced · 632 without coordinates
Open the institutions mapphysical evidence828
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 institutions62 of 125 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
Jena Microbial Resource Collectionlocation not on record
84
Bronx, US
57
Tampa, US
55
Chapel Hill, US
37
Jackson, US
37
Ann Arbor, US
36
Bloomington, US
28
University of Stellenboschlocation not on record
27
Porto Alegre, BR
27
Austin, US
22
Bangkok, TH
21
Saint Louis, US
20
Université de Bordeauxlocation not on record
19
Green Bay, US
16
Miami, US
13
US
12
Blumenau, BR
12
Tuscaloosa, US
11
University of Southern Mississippilocation not on record
11
Fort Worth, US
9
ITVlocation not on record
9
Valdosta State Universitylocation not on record
9
San Jose State University, Museum of Birds and Mammalslocation not on record
8
BAYLUlocation not on record
8
National Biodiversity Institute, Costa Ricalocation not on record
7
UFSClocation not on record
7
Universidade Federale do Rio Grande do Sullocation not on record
7
UnBlocation not on record
7
Universidade Federal de Santa Catarinalocation not on record
6
Madison, US
6
Mexico City, MX
6
Kew, GB
6
San Angelo, US
5
Florida Museum of Natural History- Zoology, Paleontology & Paleobotanylocation not on record
5
Corrientes, AR
5
UNICAMPlocation not on record
5
EL PASO, US
5
Laboratorio de Ictiologialocation not on record
4
GAlocation not on record
4
UFMGlocation not on record
4
UEMlocation not on record
4
College Park, US
4
ASUlocation not on record
4
UFPElocation not on record
4
Salvador, BR
3
Instituto de Ecología Aplicada, Universidad Autónoma de Tamaulipaslocation not on record
3
Chongqing Museumlocation not on record
3
Columbia, US
3
Departamento de Geologia, Universidad de Chilelocation not on record
3
JBRJlocation not on record
3
Tall Timbers Research Stationlocation not on record
3
Masindi, UG
3
Williamsburg, US
3
Universidade Federal de Sergipe (UFS)location not on record
3
ISAlocation not on record
3
Londrina, BR
3
Museu Nacional, Universidade Federal do Rio de Janeirolocation not on record
3
OTSlocation not on record
2
San Isidro, AR
2
Chaguaramas, TT
2
Universidade Federal do Rio Grande do Nortelocation not on record
2
INBIOlocation not on record
2
Juriquilla, MX
2
UNESClocation not on record
2
Mississippi State, US
2
Durango, MX
2
Norfolk, US
2
CJBGlocation not on record
2
McWane Science Centerlocation not on record
2
Toronto, CA
2
South Kensington, GB
2
Mohonk Preservelocation not on record
2
CICYTEXlocation not on record
2
Feira de Santana, BR
2
DOI/NPS, Mississippi National River & Recreation Arealocation not on record
2
Criciúma, BR
2
Centro de Estudios y Colecciones Biológicas para la Conservaciónlocation not on record
2
Teresina, BR
2
Riverside, US
2
Paleontological Collectionlocation not on record
1
Antiguo Cuscatlán, SV
1
Stockholm, SE
1
Ciudad de México, MX
1
Museum of the Rockieslocation not on record
1
DOI/NPS, Little Rock Central High School National Historic Sitelocation not on record
1
Pullman, US
1
UFBAlocation not on record
1
Herbario Universidad de Concepciónlocation not on record
1
Pittsburg, US
1
Auckland, NZ
1
Oswego, US
1
Jardín Botánico de Cartagena "Guillermo Piñeres" (JBC)location not on record
1
Museu Paraense Emílio Goeldilocation not on record
1
Centro de Investigación en Biodiversidad y Conservación, Universidad Autónoma del Estado de Moreloslocation not on record
1
Flagstaff, US
1
San José, CR
1
Due West, US
1
Durham, US
1
FUVATESlocation not on record
1
Uniwersytet Śląski w Katowicachlocation not on record
1
China Agricultural Universitylocation not on record
1
La Paz, MX
1
Museo civico La Terra e l'Uomo di Crocetta del Montellolocation not on record
1
Millersville, US
1
Waverly, US
1
Universidade de São Paulolocation not on record
1
UFPRlocation not on record
1
Loja, EC
1
Pomona Collegelocation not on record
1
Phyletisches Museum Jenalocation not on record
1
Museu Paraense Emilio Goeldilocation not on record
1
Fayetteville, US
1
Davis, US
1
Paris, FR
1
Chicago, US
1
Universidade Federal do Ceara, Departamento de Biologialocation not on record
1
Ivano-Frankivsk, UA
1
CEPLAClocation not on record
1
MAlocation not on record
1
UNESP-RClocation not on record
1
Knoxville, US
1
PUC-RSlocation not on record
1
Tapachula, MX
1
ESALQlocation not on record
1
AUAlocation not on record
1
125 institutions · 822 of 828 vouchered records shown · 6 without an institution code
09Environmental DNA21 detections
Where the DNA of Eleocharis flavescens 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 found21
Studies independent surveys2
Countries2
Verifiable raw sequence linked9
Signal confidence: moderateweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 21 detections have coordinates
Open the map2 countries0
moist area around hot spring0.5dm water of grassy, gravelly flats back o…On saturated, emergent peaty-sand. Assoc. sp…
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 median27.1 °C 18.7–27.1
Seasonal swing summer↔winter2.20 °C
Max temp (day)32.2 °C 22.2–32.2
Min temp (night)21.9 °C 17.0–21.9
Precipitation19.1 mm/mo 19.1–112
Air humidity51.6 % 51.6–62.2
Moisture balance-142 mm/mo -142–-15.4
Vapour deficit1,733 Pa 847–1,733
Wind speed2.50 m/s 2.30–4.70
Cloud cover15.4 % 15.4–45.5
CHELSA 1981–2010, ~9 km grid, at location & month of 13 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 Foundation3 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility912 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI21 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics17 specimens↗
NCBIUS National Library of Medicinesequences↗
GRIN TaxonomyUSDA-ARSdistribution & uses↗
Open Tree of LifeOpenTreephylogeny backbone↗
CCDBChromosome Counts DB · Tel Aviv U.genome & karyotype↗
WikidataWikimedia Foundationstructured facts↗
GLoBIGlobal Biotic Interactionsbiotic interactions↗