Eleocharis montevidensis is a species of spikesedge known by the common name sand spikerush. It is a widespread coastal plant native to the Americas. It grows in moist, sandy spots in many habitat types, including lakes, riverbanks, wet meadows, and springs. It has a disjunct distribution, in North America (southern United States from California to the Carolinas, Mexico, Guatemala, Honduras) and South America (Brazil, Peru, Argentina, Uruguay).Kew World Checklist of Selected Plant FamiliesBiota of North America 2013 county distribution map
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 montevidensis has left across the world's sequence archives.
At a glance
DNA specimens6
Marker genes4
GenBank sequences3
eDNA detections4
Countries1
The DNA barcodea real sequence read deposited for this species
Eleocharis montevidensis specimen-voucher V. W. Steinmann 873 (RSA) internal transcribed spacer 1, partial sequence; 5.8S ribosomal RNA gene, and internal transcribed spacer 2, complete 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.
★matK★rbcLa★ITS3★ITS2
plant barcodefungal barcode
06Genome at a glanceCCDB
The complete instruction manualEleocharis montevidensis 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 — Kessler, J. W. 1983. In IOPB chromosome number reports LXXIX. 32: 322–323.
CCDB · eflora
CCDB · book-fedorov — Harms (D. n. 1964)
n 101×CCDB · cyper-only
CCDB · cyper-only — 250Harms, L. J.1964
08Occurrence & distribution
Record type2 419 records
Wild obs. + sensor119
Museum / vouchered2 205
Other95
Origin
Native10
Range
Area of Occupancy AOO6 436 km²
Depth
0–200 m sunlit6
200–1000 m twilight0
1–4 km midnight0
>4 km abyssal0
median 1 m · max 1 m · 6 records with depth
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Coordinate accuracy91% within 1 km
≤100 m 59≤1 km 14≤10 km 1>10 km 6
80 georeferenced · 39 without coordinates
Open the mapobservation + sensor119
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 accuracy69% within 1 km
≤100 m 506≤1 km 231≤10 km 303>10 km 24
1 064 georeferenced · 1 141 without coordinates
Open the institutions mapphysical evidence2 205
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 institutions71 of 113 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
San Diego, US
222
Austin, US
188
Fort Worth, US
143
Bronx, US
113
Durango, MX
100
Riverside, US
92
Mexico City, MX
90
Jackson, US
86
Guasave, MX
80
Claremont, US
77
Mexico City, MX
56
ASUlocation not on record
53
Wuzhou, CN
49
Flagstaff, US
46
Juriquilla, MX
45
Jena Microbial Resource Collectionlocation not on record
43
Ann Arbor, US
36
US
35
Centro de Investigación en Biodiversidad y Conservación, Universidad Autónoma del Estado de Moreloslocation not on record
35
Texas Lutheran Universitylocation not on record
27
Santa Barbara, US
26
Lubbock, US
25
Chapel Hill, US
20
Instituto de Ecología Aplicada, Universidad Autónoma de Tamaulipaslocation not on record
20
La Paz, MX
19
BAYLUlocation not on record
19
Phoenix, US
18
Tampa, US
18
DOI/NPS, Little Rock Central High School National Historic Sitelocation not on record
16
Porto Alegre, BR
16
San Angelo, US
16
Saint Louis, US
15
CASlocation not on record
15
US
15
Valdosta State Universitylocation not on record
14
EL PASO, US
13
Chapingo, MX
12
Davis, US
12
DOI/NPS, Mississippi National River & Recreation Arealocation not on record
11
SLU Artdatabankenlocation not on record
11
Severin-McDaniel Insect Collectionlocation not on record
11
Irvine, US
10
Miami, US
10
Austin, US
9
Albuquerque, US
9
Stephenville, US
9
Hermosillo, MX
8
Los Angeles, US
8
Ciudad de México, MX
8
Angwin, US
7
Bangkok, TH
6
University of Southern Mississippilocation not on record
6
Denton, US
6
Anchorage, US
5
San Jose State University, Museum of Birds and Mammalslocation not on record
5
Canadian Department of Agriculturelocation not on record
5
Columbia, US
5
Long Beach, US
5
Tuscaloosa, US
4
Chongqing Museumlocation not on record
4
The University of Arizonalocation not on record
4
Burlington, US
4
LDlocation not on record
3
Zacatecas, MX
3
University of Stellenboschlocation not on record
3
GAlocation not on record
3
San Isidro, AR
3
Pullman, US
3
Henderson, US
3
Mississippi State, US
3
Université de Bordeauxlocation not on record
2
Northridge, US
2
Honolulu, US
2
La Paz, BO
2
San Luis Obispo, US
2
Salvador, BR
2
Mexico City, MX
2
NO DISPONIBLElocation not on record
2
Provo, US
2
Florida Museum of Natural History- Zoology, Paleontology & Paleobotanylocation not on record
2
Tall Timbers Research Stationlocation not on record
2
Ciudad de México, MX
2
Wellington, NZ
1
South Kensington, GB
1
DOI/NPS, Colonial National Historical Parklocation not on record
1
Knoxville, US
1
Ashland, US
1
Auckland, NZ
1
Sucre, BO
1
Universidade Federal de Santa Catarinalocation not on record
1
DOI/NPS, Greenbelt Parklocation not on record
1
Facultad de Zootecnia y Ecología, Universidad Autónoma de Chihuahualocation not on record
1
Universidade Federal de Sergipe (UFS)location not on record
1
University of Tennessee at Chattanoogalocation not on record
1
WTUlocation not on record
1
STNFlocation not on record
1
Kew, GB
1
Giardini Botanici Hanburylocation not on record
1
Millersville, US
1
Pomona Collegelocation not on record
1
Musee des Dinosaures d'Esperaza (Aude)location not on record
1
Universidade Federale do Rio Grande do Sullocation not on record
1
UFSClocation not on record
1
Masindi, UG
1
San Diego Natural History Museum, Herbariumlocation not on record
1
Morelia, MX
1
IPA/SPlocation not on record
1
CIIDIRlocation not on record
1
Bloomington, US
1
San Diego Natural History Museumlocation not on record
1
AUAlocation not on record
1
Pittsburg, US
1
Córdoba, AR
1
113 institutions · 2 174 of 2 205 vouchered records shown · 31 without an institution code
09Environmental DNA4 detections
Where the DNA of Eleocharis montevidensis 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
Riparian with Platanus racemosa, Quercus agr…
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 median15.0 °C 15.0–15.0
Seasonal swing summer↔winter10.9 °C
Max temp (day)20.2 °C
Min temp (night)10.5 °C
Precipitation19.9 mm/mo
Air humidity60.9 %
Moisture balance-100 mm/mo
Vapour deficit667 Pa
Wind speed2.30 m/s
Cloud cover31.7 %
CHELSA 1981–2010, ~9 km grid, at location & month of 1 detection point · 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 413 records↗
OBISOcean Biodiversity Information System6 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI4 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics6 specimens↗
NCBIUS National Library of Medicinesequences↗
GRIN TaxonomyUSDA-ARSdistribution & uses↗
Open Tree of LifeOpenTreephylogeny backbone↗
CCDBChromosome Counts DB · Tel Aviv U.genome & karyotype↗
GLoBIGlobal Biotic Interactionsbiotic interactions↗