Gamochaeta americana
(Mill.) Wedd. · speciesAt a glance
Sources10 archives
Databases and archives Gamochaeta americana's data was compiled from.
WikipediaWikimedia Foundation3 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility3 732 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI6 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics13 specimens↗
GRIN TaxonomyUSDA-ARSdistribution & uses↗
CCDBChromosome Counts DB · Tel Aviv U.genome & karyotype↗
GoaTGenomes on a Tree · Sangergenome & karyotype↗
PloiDBPloidy Databasegenome & karyotype
GLoBIGlobal Biotic Interactionsbiotic interactions↗Every layer below draws on the sources above — open one to explore it, or use ← → to move between tabs.
Gamochaeta coarctata, the gray everlasting, is a species of flowering plant in the family Asteraceae. It is widespread in South America (from Colombia to Uruguay) and naturalized in parts of Eurasia, Australia, and North America.Guy L. Nesom 2004. New distribution records for Gamochaeta (Asteraceae: Gnaphalieae) in the United States. Sida 21(2): 1175–1185.Biota of North America Program 2014 county distribution mapCalflora taxon report, University of California, Gamochaeta coarctata Gamochaeta coarctata is an annual herb up to 15 cm tall. Leaves are up to 3 cm long. The plant forms many small flower heads in elongated arrays. Each head contains 2–4 yellow disc flowers but no ray flowers.Flora of North America, Gamochaeta stachydifolia (Lamarck) Cabrera, 1961. Some specimens collected in the United States were formerly misidentified as G. americana, which does not grow in the United States.Guy L. Nesom 1990. The taxonomic status of Gamochaeta (Asteraceae: Inuleae) and the species of the United States. Phytologia 68:186–198.
No narrative description available for this taxon yet.
Size & morphology18
Life cycle & reproduction15
Diet & foraging1
Habitat & environment13
Physiology & chemistry2
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 Gamochaeta americana 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 Gamochaeta americana 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.
2n 281×GoaT · Kew Plant DNA C-values Database
n 1411×CCDB · iapt · CCDB · croinout · CCDB · ipcn-api-dl +1
n 202×CCDB · croinout · CCDB · ipcn-api-dl
polyploid inferred1×PloiDB · genus-scale
How far back this lineage goes — and how we know. Everything here is measured in Ma, short for “mega-annum”: millions of years ago. The chart reads left to right like a calendar of the Earth, from the deep past on the left to today at the right edgetop to bottom like a core drilled through the Earth, from the deep past at the top down to today at the bottom.
At a glance
When this lineage existed
How to read this: the coloured strip along the bottomdown the left is the geological calendar — the standard epochs (Pliocene, Pleistocene…) every museum uses, shown so you can see which chapter of Earth's history this lineage lived in. This lineage is a young one, so the strip is zoomed in to epochs — the finer subdivisions inside a period. The orange marker is the DNA clock: DNA accumulates mutations at a roughly steady rate, so comparing this species' DNA with its relatives estimates when the lineage split off — independently of any fossil.
Record type3 732 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.
Cultivated / Captivenot free-living
A living individual in a botanical garden, zoo or nursery — cultivated or kept, not free-living.
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Holding institutions83 of 183 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
| Institution | Specimens |
|---|---|
| Saint Louis, US | 229 |
| National Biodiversity Institute, Costa Ricalocation not on record | 105 |
| Austin, US | 104 |
| Mexico City, MX | 99 |
| Canberra, AU | 96 |
| Mount Annan, AU | 89 |
| Museo Entomologico de Leonlocation not on record | 84 |
| Córdoba, AR | 80 |
| University of Stellenboschlocation not on record | 58 |
| Brisbane, AU | 45 |
| Bronx, US | 35 |
| Kew, GB | 34 |
| Xiamen, CN | 31 |
| Adelaide, AU | 31 |
| Blumenau, BR | 25 |
| Durango, MX | 25 |
| Universidad Nacional de Colombia (UNAL)location not on record | 24 |
| Aarhus, DK | 18 |
| Kensington, AU | 16 |
| Rotorua, NZ | 15 |
| Laboratory of Palaeontologylocation not on record | 15 |
| Jardín Botánico de Bogotá José Celestino Mutis (JBB)location not on record | 15 |
| BDBClocation not on record | 15 |
| San Isidro, AR | 15 |
| UNIVASFlocation not on record | 14 |
| UFSClocation not on record | 13 |
| San José, CR | 13 |
| Christchurch, NZ | 12 |
| CASlocation not on record | 11 |
| Pelotas, BR | 11 |
| Quito, EC | 11 |
| Instituto de Investigación de Recursos Biológicos Alexander von Humboldt (IAvH)location not on record | 10 |
| Ciudad de México, MX | 10 |
| Auckland, NZ | 9 |
| Guasave, MX | 9 |
| Corrientes, AR | 9 |
| Altos de Pipe, VE | 9 |
| Riverside, US | 8 |
| UFBAlocation not on record | 8 |
| Austin, US | 8 |
| Universidade Federal de Santa Catarinalocation not on record | 8 |
| BIO-UNIPIlocation not on record | 8 |
| MAlocation not on record | 8 |
| Santa Cruz de la Sierra, BO | 8 |
| QCNElocation not on record | 8 |
| Guatemala City, GT | 7 |
| La Paz, BO | 7 |
| CEPLAClocation not on record | 7 |
| JBRJlocation not on record | 7 |
| UNICAMPlocation not on record | 7 |
| Universiti Sains Malaysialocation not on record | 7 |
| Antiguo Cuscatlán, SV | 7 |
| Laboratorio de Ictiologialocation not on record | 7 |
| Tall Timbers Research Stationlocation not on record | 7 |
| Tampa, US | 7 |
| MEXUlocation not on record | 6 |
| PUC-RSlocation not on record | 6 |
| Jardín Botánico José Celestino Mutis (JBBJCM)location not on record | 6 |
| UTPLlocation not on record | 6 |
| Universidade Federale do Rio Grande do Sullocation not on record | 6 |
| UFMGlocation not on record | 6 |
| Cusco, PE | 6 |
| FUVATESlocation not on record | 6 |
| Armidale, AU | 5 |
| UChlocation not on record | 5 |
| Berlin, DE | 5 |
| UNESClocation not on record | 5 |
| Porto Alegre, BR | 5 |
| Universidad de Nariño (UdeNar)location not on record | 5 |
| INBIOlocation not on record | 4 |
| UFMSlocation not on record | 4 |
| Chicago, US | 4 |
| León, NI | 4 |
| Institut fur Allgemeine Mikrobiologielocation not on record | 4 |
| UnBlocation not on record | 4 |
| ASUlocation not on record | 4 |
| Hobart, AU | 4 |
| Universidade da Região de Joinville - Univillelocation not on record | 4 |
| Cuenca, EC | 4 |
| Cascavel, BR | 4 |
| Chaguaramas, TT | 4 |
| Institut und Museum fuer Geologie und Palaeontologielocation not on record | 3 |
| UDESC-CAVlocation not on record | 3 |
| USP-IBlocation not on record | 3 |
| Arequipa, PE | 3 |
| San Jose State University, Museum of Birds and Mammalslocation not on record | 3 |
| Feira de Santana, BR | 3 |
| Criciúma, BR | 3 |
| Universidade Federal do Espírito Santolocation not on record | 3 |
| Wollongong, AU | 3 |
| Juriquilla, MX | 3 |
| Wellington, NZ | 3 |
| Pontifícia Universidade Católica do Paranálocation not on record | 3 |
| Ivano-Frankivsk, UA | 3 |
| UNESP-ISlocation not on record | 2 |
| Riobamba, EC | 2 |
| Ural Federal University "B. N. Yeltsin"location not on record | 2 |
| Campo Grande, BR | 2 |
| Universidad de Caldas (UCaldas)location not on record | 2 |
| South Kensington, GB | 2 |
| Area de Conservacion Guanacastelocation not on record | 2 |
| Bangkok, TH | 2 |
| Loja, EC | 2 |
| IPA/SPlocation not on record | 2 |
| Glocation not on record | 2 |
| Istituto Agrario Castelnuovolocation not on record | 2 |
| Brasília, BR | 2 |
| Fundación Miguel Lillolocation not on record | 2 |
| UNIVILLElocation not on record | 2 |
| Entomological Society of Latvialocation not on record | 2 |
| PRClocation not on record | 2 |
| UTFPR-SLlocation not on record | 2 |
| Universidad Nacional de Asunciónlocation not on record | 2 |
| UFPElocation not on record | 2 |
| Corporación Autónoma Regional Para la Defensa de la Meseta de Bucaramanga (CDMB)location not on record | 2 |
| Universidade Federal de Pelotaslocation not on record | 2 |
| Cenit Transporte y Logística de Hidrocarburos S.A.S. (CENIT)location not on record | 2 |
| Fort Worth, US | 2 |
| Herbario Selva Central Oxapampa - estación biológica del Jardín Botánico de Missourilocation not on record | 2 |
| HUT Culture Collectionlocation not on record | 2 |
| BMlocation not on record | 2 |
| Universidad de Antioquia (UdeA)location not on record | 2 |
| Giardini Botanici Hanburylocation not on record | 2 |
| Lima, PE | 2 |
| Université de Bordeauxlocation not on record | 1 |
| Uberlândia, BR | 1 |
| Valparaíso, CL | 1 |
| Sucre, BO | 1 |
| Museo de Historia Natural de El Salvadorlocation not on record | 1 |
| Universidad de La Salle (La Salle)location not on record | 1 |
| Paleontological Collectionlocation not on record | 1 |
| Maringá, BR | 1 |
| Iquitos, PE | 1 |
| Jena Microbial Resource Collectionlocation not on record | 1 |
| Cambridge, US | 1 |
| Institut de Biologia Evolutiva, (CSIC-UPF)location not on record | 1 |
| Zlocation not on record | 1 |
| XALlocation not on record | 1 |
| Instituto Amazónico de Investigaciones Científicas - SINCHIlocation not on record | 1 |
| DOI/NPS, Mississippi National River & Recreation Arealocation not on record | 1 |
| FLASlocation not on record | 1 |
| Turku, FI | 1 |
| Cochabamba, BO | 1 |
| US | 1 |
| Sangmiung Universitylocation not on record | 1 |
| San Luis Obispo, US | 1 |
| CPATSAlocation not on record | 1 |
| Calabar, NG | 1 |
| Guatemala, GT | 1 |
| Universidad Nacional Agrarialocation not on record | 1 |
| Ciudad de México, MX | 1 |
| San Diego Natural History Museumlocation not on record | 1 |
| GAlocation not on record | 1 |
| Cenargenlocation not on record | 1 |
| UTFPR-DVlocation not on record | 1 |
| Uppsala, SE | 1 |
| Tuxtla Gutiérrez, MX | 1 |
| Edinburgh, GB | 1 |
| OTSlocation not on record | 1 |
| Herbario Universidad de Concepciónlocation not on record | 1 |
| UNISANTAlocation not on record | 1 |
| G. Peyrelocation not on record | 1 |
| Anchorage, US | 1 |
| IEBlocation not on record | 1 |
| Campo Mourão, BR | 1 |
| Salvador, BR | 1 |
| UNESP-FCAlocation not on record | 1 |
| UTFPR-CPlocation not on record | 1 |
| UNESP-RClocation not on record | 1 |
| Centro de Pesquisas Agropecuarias do Tropico Umidolocation not on record | 1 |
| Brasília, BR | 1 |
| San Diego, US | 1 |
| UEMlocation not on record | 1 |
| LDlocation not on record | 1 |
| UFSMlocation not on record | 1 |
| Castelar, AR | 1 |
| Instituto Nacional de Biodiversidad Herbario, Costa Ricalocation not on record | 1 |
| Chongqing Museumlocation not on record | 1 |
| Canadian Department of Agriculturelocation not on record | 1 |
| Viña del Mar, CL | 1 |
| Davis, US | 1 |
| Badajoz, ES | 1 |
| MeiseBGlocation not on record | 1 |
Cultivated / Captivenot free-living
A living individual in a botanical garden, zoo or nursery — cultivated or kept, not free-living.
Where the DNA of Gamochaeta americana 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.