Cenchrus longispinus
(Hack.) Fernald · speciesAt a glance
Sources10 archives
Databases and archives Cenchrus longispinus's data was compiled from.
WikipediaWikimedia Foundation6 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility6 036 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI8 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics24 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 & karyotypeEvery layer below draws on the sources above — open one to explore it, or use ← → to move between tabs.
Cenchrus longispinus is a species of grass, also known as spiny burr grass or gentle Annie. Its fruits are clumped into "burrs" with sharp, barbed spines that can penetrate the hides and mouth of grazing animals. They can also become lodged in human clothing, causing some discomfort.Fernald, Merritt Lyndon 1943. Virginian botanizing under restrictions. Rhodora 45(538): 357-413 The species is native to North America (Canada, Mexico, and the United States). It is a noxious weed in Europe, Australia and New Zealand where it was introduced.Kew World Checklist of Selected Plant FamiliesVictoria, Australia, Noxious Weed siteDistribution in Australia, native originDAISIE (eds.). 2009. Handbook of Alien Species in Europe. Springer, Dordrecht. 399 p. Caro, J. A. & E. Sanchez. 1969. Cenchrus. In: A. Burkart, Gramineas. 2: 437–445. In A. E. Burkart (ed.) Fl. Il. Entre Ríos. Instituto Nacional de Tecnología Agropecuaria, Buenos AiresDeLisle, D. G. 1963. Taxonomy and distribution of the genus Cenchrus. Iowa State College Journal of Science 37(3): 259–351Herrera Arrieta, Y. 2014. Additions and updated names for grasses of Durango, Mexico. Acta Botánica Mexicana 106: 79–95Sousa Sánchez, M. & E. F. Cabrera Cano. 1983. Flora de Quintana Roo. Listados Florísticos de México 2: 1–100
No narrative description available for this taxon yet.
Size & morphology9
Life cycle & reproduction5
Diet & foraging1
Habitat & environment12
Physiology & chemistry4
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 Cenchrus longispinus 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 Cenchrus longispinus 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.
Genome sizehow big the whole instruction manual is
Measured in base pairs (bp) — the individual letters of DNA (human ≈ 3.2 Gb, a bacterium a few million). The chart places this genome on a logarithmic scale — each step to the right is ten times bigger — among reference organisms. Across species a bigger genome loosely tracks with larger cells, slower growth and lower-energy lifestyles (powered flight favours small genomes) — yet it does not imply more genes or a more advanced organism (the long-standing C-value paradox).
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.
n 172×CCDB · Cave1958 · CCDB · Cave1963
diploid inferred1×PloiDB · genus-scale
Record type6 036 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 institutions111 of 160 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
| Institution | Specimens |
|---|---|
| Wuzhou, CN | 314 |
| International Salmonella Centre (W.H.O.)location not on record | 157 |
| Madison, US | 148 |
| St. Paul, US | 95 |
| Adelaide, AU | 75 |
| Bloomington, US | 58 |
| Chadron, US | 57 |
| Ann Arbor, US | 54 |
| Philadelphia, US | 54 |
| Chongqing Museumlocation not on record | 50 |
| Mount Annan, AU | 48 |
| Museo Entomologico de Leonlocation not on record | 45 |
| Denver, US | 43 |
| GBS RAN - Glavny Botanichesky Sad Rossijskoj Akademii Nauklocation not on record | 38 |
| Davis, US | 32 |
| DOI/NPS, Greenbelt Parklocation not on record | 30 |
| Spearfish, US | 29 |
| Burlington, US | 28 |
| Saint Louis, US | 28 |
| Claremont, US | 28 |
| Logan, US | 24 |
| DOI/NPS, Colonial National Historical Parklocation not on record | 22 |
| Museo civico La Terra e l'Uomo di Crocetta del Montellolocation not on record | 20 |
| Musee des Dinosaures d'Esperaza (Aude)location not on record | 20 |
| Canberra, AU | 19 |
| Canadian Department of Agriculturelocation not on record | 19 |
| Flagstaff, US | 19 |
| New Haven, US | 19 |
| Fort Worth, US | 18 |
| Toronto, CA | 17 |
| WTUlocation not on record | 17 |
| College Park, US | 17 |
| Allentown, US | 15 |
| Pullman, US | 14 |
| University of New Hampshirelocation not on record | 14 |
| Corvallis, US | 13 |
| BIO-UNIPIlocation not on record | 12 |
| Brisbane, AU | 12 |
| Lincoln, US | 11 |
| Riverside, US | 11 |
| Chapel Hill, US | 11 |
| University of Stellenboschlocation not on record | 10 |
| ASUlocation not on record | 10 |
| Green Bay, US | 10 |
| Vancouver, CA | 10 |
| Bronx, US | 10 |
| Sanda, JP | 8 |
| Chicago, US | 8 |
| CJBGlocation not on record | 8 |
| Bangkok, TH | 7 |
| University of Wisconsinlocation not on record | 7 |
| Tlalnepantla, MX | 7 |
| Albuquerque, US | 7 |
| San Diego, US | 6 |
| MeiseBGlocation not on record | 6 |
| Austin, US | 6 |
| Moscow, US | 6 |
| Staten Island, US | 6 |
| Williamsburg, US | 6 |
| Victoria, CA | 6 |
| Provo, US | 6 |
| Dekalb, US | 6 |
| Jackson, US | 5 |
| McWane Science Centerlocation not on record | 5 |
| Palmerston, AU | 5 |
| Millersville, US | 5 |
| Brussel, BE | 5 |
| Armidale, AU | 4 |
| Pittsburg, US | 4 |
| GB | 4 |
| Durango, MX | 4 |
| Ciudad de México, MX | 4 |
| Emporia, US | 4 |
| Kensington, AU | 4 |
| Hobart, AU | 4 |
| Knoxville, US | 4 |
| University of Wisconsinlocation not on record | 4 |
| Boise, US | 4 |
| Bozeman, US | 3 |
| IDElocation not on record | 3 |
| Valdosta State Universitylocation not on record | 3 |
| Museum of the Rockieslocation not on record | 3 |
| San Luis Obispo, US | 3 |
| Missoula, US | 3 |
| Whitewater, US | 3 |
| Science Museum of Minnesotalocation not on record | 3 |
| Odawara, JP | 3 |
| USFSlocation not on record | 3 |
| Columbia, US | 3 |
| Caldwell, US | 3 |
| Lubbock, US | 3 |
| Chicago, US | 3 |
| BRNUlocation not on record | 3 |
| Phoenix, US | 3 |
| Altos de Pipe, VE | 3 |
| Weber State Universitylocation not on record | 3 |
| Fayetteville, US | 3 |
| University of Southern Mississippilocation not on record | 3 |
| Sendai, JP | 2 |
| San Isidro, AR | 2 |
| BAYLUlocation not on record | 2 |
| Tempe, US | 2 |
| Santa Cruz, US | 2 |
| Springfield, US | 2 |
| Universidad de Buenos Aireslocation not on record | 2 |
| Grand Junction, US | 2 |
| University of Guelph, OAC Herbariumlocation not on record | 2 |
| Auckland, NZ | 2 |
| DOI/NPS, Little Rock Central High School National Historic Sitelocation not on record | 2 |
| Tsukuba, JP | 2 |
| Tuscaloosa, US | 2 |
| GAlocation not on record | 2 |
| Hudson, US | 2 |
| CASlocation not on record | 2 |
| Norfolk, US | 2 |
| James F. Matthews Center for Biodiversity Studieslocation not on record | 2 |
| Northridge, US | 2 |
| Weymouth Woods Sandhills Nature Preservelocation not on record | 2 |
| JP | 2 |
| Conway, US | 2 |
| Beijing, CN | 2 |
| Asheville, US | 1 |
| DOI/NPS, Selma to Montgomery National Historic Traillocation not on record | 1 |
| Frankfurt am Main | 1 |
| Little Rock, US | 1 |
| Edmonton, CA | 1 |
| Elikins, US | 1 |
| Henderson State Universitylocation not on record | 1 |
| Durham, US | 1 |
| Wlocation not on record | 1 |
| Clemson, US | 1 |
| Severin-McDaniel Insect Collectionlocation not on record | 1 |
| Mohonk Preservelocation not on record | 1 |
| Göteborg, SE | 1 |
| Brookings, US | 1 |
| BGPAlocation not on record | 1 |
| UMKClocation not on record | 1 |
| Córdoba, AR | 1 |
| Ypsilanti, US | 1 |
| Kingston, US | 1 |
| San Diego Natural History Museum, Herbariumlocation not on record | 1 |
| Irvine, US | 1 |
| Paris, FR | 1 |
| University of Tennessee at Chattanoogalocation not on record | 1 |
| San Angelo, US | 1 |
| Tacoma, US | 1 |
| Mexico City, MX | 1 |
| Florida Museum of Natural History- Zoology, Paleontology & Paleobotanylocation not on record | 1 |
| Chicago, US | 1 |
| Pocatello, US | 1 |
| Kirksville, US | 1 |
| Henderson, US | 1 |
| Washington, US | 1 |
| West Virginia Wesleyan Collegelocation not on record | 1 |
| GJOlocation not on record | 1 |
| EL PASO, US | 1 |
| NSW Dept of Planning, Industry and Environmentlocation not on record | 1 |
| Uniwersytet Jagiellońskilocation not on record | 1 |
| Mexico City, MX | 1 |
| Berlin, DE | 1 |
Where the DNA of Cenchrus longispinus 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.