Gamochaeta pensylvanica
(Willd.) Cabrera · speciesAt a glance
Sources11 archives
Databases and archives Gamochaeta pensylvanica's data was compiled from.
WikipediaWikimedia Foundation6 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility4 648 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI7 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics10 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 & 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 pensylvanica, the Pennsylvania cudweedFlowers of India, Pennsylvania Cudweed. Gamochaeta pensylvanica or Pennsylvania everlasting, is a widespread species of flowering plant in the family Asteraceae. It is native to South America and introduced into Eurasia, Africa, Australia, and North America. The pensylvanica epithet is a misnomer, as the plant is not native to Pennsylvania and only marginally naturalized there.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 mapCabrera, A. L. 1978. Compositae. 10: 1–726. In A. L. Cabrera (ed.) Flora de la provincia de Jujuy. Instituto Nacional de Tecnología Agropecuaria, Buenos AiresJørgensen, P. M., M. H. Nee & S. G. Beck. (eds.) 2014. Catálogo de las plantas vasculares de Bolivia, Monographs in systematic botany from the Missouri Botanical Garden 127(1–2): i–viii, 1–1744.Luteyn, J. L. 1999. Páramos, a checklist of plant diversity, geographical distribution, and botanical literature. Memoirs of The New York Botanical Garden 84: viii–xv, 1–278. Gamochaeta pensylvanica is an annual herb up to 50 cm tall. Leaves are up to 7 cm long, light green because of woolly hairs on the surfaces (though not as dense as in some related species). The plant forms many small flower heads in elongated arrays. Each head contains 3–4 purple disc flowers but no ray flowers.Flora of China, Gamochaeta pensylvanica (Willdenow) Cabrera, 1961. 匙叶合冠鼠麴草 shi ye he guan shu qu cao
No narrative description available for this taxon yet.
Size & morphology19
Life cycle & reproduction14
Diet & foraging1
Habitat & environment14
Other traits2
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 pensylvanica 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 pensylvanica 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 285×CCDB · croinout · CCDB · ipcn-api-dl · CCDB · eflora +1
2n 01×CCDB · CromoCat 2015
n 92×CCDB · iapt · CCDB · CromoCat 2015
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 type4 648 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 institutions101 of 184 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
| Institution | Specimens |
|---|---|
| Brisbane, AU | 104 |
| Tampa, US | 97 |
| Austin, US | 85 |
| Kochi, JP | 69 |
| Córdoba, AR | 68 |
| Jena Microbial Resource Collectionlocation not on record | 60 |
| Riverside, US | 60 |
| Mount Annan, AU | 57 |
| Claremont, US | 52 |
| Saint Louis, US | 41 |
| San Isidro, AR | 38 |
| Pretoria, ZA | 38 |
| Corrientes, AR | 36 |
| San Diego, US | 35 |
| Valdosta State Universitylocation not on record | 35 |
| Canberra, AU | 33 |
| Bronx, US | 31 |
| Fort Worth, US | 31 |
| Kagoshima, JP | 25 |
| Bangkok, TH | 24 |
| Tokushima, JP | 22 |
| Toyama, JP | 20 |
| US | 19 |
| Columbia, US | 18 |
| Museo Entomologico de Leonlocation not on record | 18 |
| Jackson, US | 17 |
| Christchurch, NZ | 17 |
| Durban, ZA | 17 |
| GAlocation not on record | 16 |
| Florida Museum of Natural History- Zoology, Paleontology & Paleobotanylocation not on record | 16 |
| Kew, GB | 15 |
| University of Stellenboschlocation not on record | 14 |
| Laboratory of Palaeontologylocation not on record | 13 |
| Clemson, US | 13 |
| CASlocation not on record | 13 |
| Shinshu Universitylocation not on record | 12 |
| Chapel Hill, US | 11 |
| Auckland, NZ | 11 |
| Chongqing Museumlocation not on record | 11 |
| BIO-UNIPIlocation not on record | 10 |
| UNIVASFlocation not on record | 10 |
| BISHlocation not on record | 10 |
| València, ES | 9 |
| Paleontological Collectionlocation not on record | 9 |
| AUAlocation not on record | 9 |
| MeiseBGlocation not on record | 8 |
| Blumenau, BR | 8 |
| San Luis Obispo, US | 7 |
| Adelaide, AU | 7 |
| JP | 7 |
| Tuscaloosa, US | 7 |
| Kensington, AU | 6 |
| Herbarium of the Department of Botany, University of Tokyolocation not on record | 6 |
| Irvine, US | 6 |
| Tall Timbers Research Stationlocation not on record | 6 |
| Armidale, AU | 5 |
| Mexico City, MX | 5 |
| James Cook Townsvillelocation not on record | 5 |
| UNESP-ISlocation not on record | 5 |
| Davis, US | 5 |
| ISAlocation not on record | 5 |
| J.F.Oberlin Universitylocation not on record | 5 |
| Fundación Miguel Lillolocation not on record | 5 |
| Texas Lutheran Universitylocation not on record | 4 |
| Fayetteville, US | 4 |
| Natural History Museum Rotterdamlocation not on record | 4 |
| EL PASO, US | 4 |
| Campo Mourão, BR | 4 |
| Fukushima Universitylocation not on record | 4 |
| Sagamihara, JP | 4 |
| Mississippi State, US | 4 |
| UTFPR-CPlocation not on record | 4 |
| Paris, FR | 4 |
| Castelar, AR | 4 |
| Stockholm, SE | 4 |
| Wuzhou, CN | 4 |
| Bloomington, US | 4 |
| Honolulu, US | 4 |
| Santa Barbara, US | 4 |
| SLU Artdatabankenlocation not on record | 3 |
| ASUlocation not on record | 3 |
| Nagano City, JP | 3 |
| University of Southern Mississippilocation not on record | 3 |
| GB | 3 |
| Wuhan, CN | 3 |
| SIHUlocation not on record | 3 |
| National Institute of Biological Resourceslocation not on record | 3 |
| Guasave, MX | 3 |
| Canadian Department of Agriculturelocation not on record | 3 |
| UEMlocation not on record | 3 |
| KOMlocation not on record | 3 |
| Wellington, NZ | 3 |
| Guatemala City, GT | 3 |
| Barcelona, ES | 3 |
| Istituto Agrario Castelnuovolocation not on record | 3 |
| Universidad Nacional de Asunciónlocation not on record | 3 |
| Québec, CA | 3 |
| Tomioka, JP | 3 |
| UNESClocation not on record | 2 |
| US | 2 |
| John T. Waterhouse Herbariumlocation not on record | 2 |
| Centro de Pesquisas Agropecuarias do Tropico Umidolocation not on record | 2 |
| UFMSlocation not on record | 2 |
| Olocation not on record | 2 |
| Otaru, JP | 2 |
| Ural Federal University "B. N. Yeltsin"location not on record | 2 |
| James F. Matthews Center for Biodiversity Studieslocation not on record | 2 |
| San Jose State University, Museum of Birds and Mammalslocation not on record | 2 |
| Tennessee Technological Universitylocation not on record | 2 |
| Durango, MX | 2 |
| Berlin, DE | 2 |
| BAYLUlocation not on record | 2 |
| Stephenville, US | 2 |
| Iwate Prefectural Museumlocation not on record | 2 |
| Sendai, JP | 2 |
| BClocation not on record | 2 |
| Antiguo Cuscatlán, SV | 2 |
| Mount Berry, US | 2 |
| Chicago, US | 2 |
| Chadron, US | 2 |
| UFMGlocation not on record | 2 |
| Audubon Society -- Silver Bluff Audubon Center and Sanctuarylocation not on record | 2 |
| Weymouth Woods Sandhills Nature Preservelocation not on record | 2 |
| UnBlocation not on record | 1 |
| Smithfield, AU | 1 |
| San Angelo, US | 1 |
| Université de Bordeauxlocation not on record | 1 |
| New Brunswick, US | 1 |
| Cape Town, ZA | 1 |
| San Bernardino, US | 1 |
| Badajoz, ES | 1 |
| Pelotas, BR | 1 |
| Ann Arbor, US | 1 |
| INMAlocation not on record | 1 |
| San Salvador de Jujuy, AR | 1 |
| Autlán de Navarro, MX | 1 |
| Mlocation not on record | 1 |
| Empresa Pernambucana de Pesquisa Agropecuária, IPAlocation not on record | 1 |
| San Diego Natural History Museum, Herbariumlocation not on record | 1 |
| Fairfax, US | 1 |
| CEPLAClocation not on record | 1 |
| Emporia, US | 1 |
| Taipei, TW | 1 |
| UFBAlocation not on record | 1 |
| CJBGlocation not on record | 1 |
| Arequipa, PE | 1 |
| Laboratorio de Ictiologialocation not on record | 1 |
| DOI/NPS, Mississippi National River & Recreation Arealocation not on record | 1 |
| Lake Charles, US | 1 |
| Vancouver, CA | 1 |
| San José, CR | 1 |
| Universidad de Antioquia (UdeA)location not on record | 1 |
| UERJlocation not on record | 1 |
| Nishihara, JP | 1 |
| Criciúma, BR | 1 |
| Little Rock, US | 1 |
| Universidade Federal de Santa Catarinalocation not on record | 1 |
| Santa Cruz de la Sierra, BO | 1 |
| UTPLlocation not on record | 1 |
| Chicago, US | 1 |
| Flagstaff, US | 1 |
| Columbus State University Herbariumlocation not on record | 1 |
| Austin, US | 1 |
| Institut und Museum fuer Geologie und Palaeontologielocation not on record | 1 |
| US | 1 |
| Sugadaira Research Station, Mountain Science Center, University of Tsukubalocation not on record | 1 |
| Department of Plant Resources, National Herbarium and Plant Laboratorieslocation not on record | 1 |
| Rishon Le Zion, IL | 1 |
| Severin-McDaniel Insect Collectionlocation not on record | 1 |
| University of North Carolina at Pembrokelocation not on record | 1 |
| GNWPlocation not on record | 1 |
| Hobart, AU | 1 |
| Moscow State Universitylocation not on record | 1 |
| Knoxville, US | 1 |
| Universidade Federale do Rio Grande do Sullocation not on record | 1 |
| UFSClocation not on record | 1 |
| Edinburgh, GB | 1 |
| UNESP-RClocation not on record | 1 |
| Museo naturalistico del Frignano Ferruccio Minghellilocation not on record | 1 |
| UNESP-FCAlocation not on record | 1 |
| VALElocation not on record | 1 |
| USP-IBlocation not on record | 1 |
| Palmerston, AU | 1 |
| Tulane Universitylocation not on record | 1 |
Where the DNA of Gamochaeta pensylvanica 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.