Callitriche heterophylla
Pursh · speciesAt a glance
Sources12 archives
Databases and archives Callitriche heterophylla's data was compiled from.
WikipediaWikimedia Foundation3 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility2 435 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI13 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics17 specimens↗
NCBIUS National Library of Medicinesequences↗
Open Tree of LifeOpenTreephylogeny backbone↗
CCDBChromosome Counts DB · Tel Aviv U.genome & karyotype↗
giftgenome & karyotype
PloiDBPloidy Databasegenome & karyotype
WikidataWikimedia Foundationstructured facts↗
GLoBIGlobal Biotic Interactionsbiotic interactions↗Every layer below draws on the sources above — open one to explore it, or use ← → to move between tabs.
Callitriche heterophylla, commonly called twoheaded water-starwort, is a species of flowering plant in the family Plantaginaceae. It is native to North America, where it found in the north from Greenland to Alaska, south to Mexico. It is widespread in the United States. Its natural habitat is in a wide variety of wetlands, including ponds, streams, and mudflats. It is typically found in areas of still or slow moving water. Callitriche heterophylla is an aquatic plant, growing almost entirely submerged except for its floating stem tips. It produces minutely small flowers throughout the growing season.
No narrative description available for this taxon yet.
Size & morphology6
Life cycle & reproduction30
Diet & foraging1
Habitat & environment26
Physiology & chemistry17
Uses & economy13
Other traits6
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 Callitriche heterophylla has left across the world's sequence archives.
At a glance
★ 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 manual Callitriche heterophylla 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.
2n 207×CCDB · ipcn-api-dl · CCDB · book-ipcn67-71
2n 101×CCDB · ipcn-api-dl
polyploid inferred1×PloiDB · genus-scale
polyploid1×GIFT · GIFT (floras)
Record type2 435 records
Origin
Range
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
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.
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Holding institutions116 of 168 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
| Institution | Specimens |
|---|---|
| Philadelphia, US | 216 |
| Victoria, CA | 115 |
| Chongqing Museumlocation not on record | 113 |
| Bronx, US | 103 |
| Wuzhou, CN | 89 |
| Durango, MX | 82 |
| Austin, US | 80 |
| Mexico City, MX | 44 |
| Allentown, US | 43 |
| University of Stellenboschlocation not on record | 42 |
| Fort Worth, US | 41 |
| Tuscaloosa, US | 41 |
| Philadelphia, US | 38 |
| Bangkok, TH | 36 |
| Williamsburg, US | 32 |
| Québec, CA | 31 |
| BAYLUlocation not on record | 27 |
| Saint John, CA | 26 |
| New Haven, US | 26 |
| University of New Hampshirelocation not on record | 25 |
| Flagstaff, US | 23 |
| College Park, US | 22 |
| Mexico City, MX | 19 |
| ASUlocation not on record | 19 |
| Guasave, MX | 17 |
| Jackson, US | 17 |
| Xiamen, CN | 14 |
| Saint Louis, US | 13 |
| Chapel Hill, US | 13 |
| Portland, US | 13 |
| Centro de Investigación en Biodiversidad y Conservación, Universidad Autónoma del Estado de Moreloslocation not on record | 13 |
| Durham, US | 12 |
| Columbia, US | 12 |
| WTUlocation not on record | 11 |
| Norfolk, US | 11 |
| Juriquilla, MX | 11 |
| Riverside, US | 11 |
| DOI/NPS, Mississippi National River & Recreation Arealocation not on record | 11 |
| Museo civico La Terra e l'Uomo di Crocetta del Montellolocation not on record | 11 |
| Phoenix, US | 9 |
| Albuquerque, US | 9 |
| Lord Fairfax Community Collegelocation not on record | 9 |
| Little Rock, US | 9 |
| University of Southern Mississippilocation not on record | 8 |
| Millersville, US | 8 |
| Claremont, US | 8 |
| EL PASO, US | 8 |
| Fayetteville, US | 8 |
| Missoula, US | 8 |
| Université Lavallocation not on record | 8 |
| Dekalb, US | 7 |
| Angwin, US | 7 |
| Boise, US | 7 |
| Staten Island, US | 7 |
| Vancouver, CA | 7 |
| Tampa, US | 6 |
| Burlington, US | 6 |
| Musee des Dinosaures d'Esperaza (Aude)location not on record | 6 |
| Aarhus, DK | 6 |
| Toronto, CA | 6 |
| US | 5 |
| Florida Museum of Natural History- Zoology, Paleontology & Paleobotanylocation not on record | 5 |
| Acadia Universitylocation not on record | 5 |
| Davis, US | 5 |
| DOI/NPS, Little Rock Central High School National Historic Sitelocation not on record | 5 |
| Arcata, US | 5 |
| Canadian Department of Agriculturelocation not on record | 5 |
| Corvallis, US | 5 |
| Museo Entomologico de Leonlocation not on record | 5 |
| DOI/NPS, Colonial National Historical Parklocation not on record | 4 |
| US | 4 |
| Provo, US | 4 |
| Moscow, US | 4 |
| National Biodiversity Institute, Costa Ricalocation not on record | 4 |
| San Luis Obispo, US | 4 |
| Keene State Universitylocation not on record | 4 |
| Mississippi State, US | 4 |
| Universidade Federale do Rio Grande do Sullocation not on record | 3 |
| Valdosta State Universitylocation not on record | 3 |
| Chicago, US | 3 |
| Madison, US | 3 |
| Chapingo, MX | 3 |
| Logan, US | 3 |
| Moscow State Universitylocation not on record | 3 |
| Clemson, US | 3 |
| Knoxville, US | 3 |
| San Diego, US | 3 |
| Lubbock, US | 3 |
| Royal Ontario Museum, Green Plant Herbarium (TRT)location not on record | 3 |
| San Francisco, US | 2 |
| Corrientes, AR | 2 |
| China Agricultural Universitylocation not on record | 2 |
| Spearfish, US | 2 |
| GAlocation not on record | 2 |
| Orem, US | 2 |
| Christchurch, NZ | 2 |
| University of Tennessee at Chattanoogalocation not on record | 2 |
| San Jose State University, Museum of Birds and Mammalslocation not on record | 2 |
| Pocatello, US | 2 |
| Conway, US | 2 |
| Denver, US | 2 |
| CASlocation not on record | 2 |
| Olocation not on record | 2 |
| Edmonton, CA | 2 |
| Institute of the biological problems of the North FEB RASlocation not on record | 2 |
| Whitewater, US | 2 |
| Pullman, US | 2 |
| Long Beach, US | 2 |
| San Isidro, AR | 2 |
| Montréal, CA | 2 |
| GB | 2 |
| MEXUlocation not on record | 2 |
| Lincoln, US | 1 |
| Tall Timbers Research Stationlocation not on record | 1 |
| Denton, US | 1 |
| Weymouth Woods Sandhills Nature Preservelocation not on record | 1 |
| Cambridge, US | 1 |
| Kingston, US | 1 |
| Quito, EC | 1 |
| Fullerton, US | 1 |
| USFSlocation not on record | 1 |
| Durham, US | 1 |
| San Angelo, US | 1 |
| Beijing, CN | 1 |
| Research Collection of B. A. Bennettlocation not on record | 1 |
| Museum of the Rockieslocation not on record | 1 |
| Miami, US | 1 |
| Tlalnepantla, MX | 1 |
| US | 1 |
| San Francisco, US | 1 |
| Walla Walla, US | 1 |
| Auckland, NZ | 1 |
| Chicago, US | 1 |
| Davenport, US | 1 |
| Baltimore, US | 1 |
| WINlocation not on record | 1 |
| Oskarshamn, SE | 1 |
| Wlocation not on record | 1 |
| Green Bay, US | 1 |
| Berlin, DE | 1 |
| Austin, US | 1 |
| DOI/NPS, Greenbelt Parklocation not on record | 1 |
| Chadron, US | 1 |
| New Brunswick, US | 1 |
| Anchorage, US | 1 |
| University of British Columbia, Herbariumlocation not on record | 1 |
| IPA/SPlocation not on record | 1 |
| Istituto Agrario Castelnuovolocation not on record | 1 |
| Anchorage, US | 1 |
| Bozeman, US | 1 |
| Maryland Department of Natural Resourceslocation not on record | 1 |
| Hobart, AU | 1 |
| Paris, FR | 1 |
| Jena Microbial Resource Collectionlocation not on record | 1 |
| Henderson State Universitylocation not on record | 1 |
| Autlán de Navarro, MX | 1 |
| Henderson, US | 1 |
| Mohonk Preservelocation not on record | 1 |
| Herbario Universidad de Concepciónlocation not on record | 1 |
| Santa Cruz, US | 1 |
| HJAEFlocation not on record | 1 |
| Santa Barbara, US | 1 |
| Stockholm, SE | 1 |
| DOI/NPS, Mount Rainier National Parklocation not on record | 1 |
| Ann Arbor, US | 1 |
| John T. Waterhouse Herbariumlocation not on record | 1 |
| Durango, US | 1 |
| Trois-Rivières, CA | 1 |
Where the DNA of Callitriche heterophylla 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
Where its DNA was found
How strong is each trace?
Modelled climatemodelled
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.