Flaveria trinervia
(Spreng.) C.Mohr · speciesAt a glance
Sources14 archives
Databases and archives Flaveria trinervia's data was compiled from.
WikipediaWikimedia Foundation2 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility2 548 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI5 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics7 specimens↗
NCBIUS National Library of Medicinesequences↗
LOTUSNatural Products (Wikidata)compounds↗
GRIN TaxonomyUSDA-ARSdistribution & uses↗
Open Tree of LifeOpenTreephylogeny backbone↗
CCDBChromosome Counts DB · Tel Aviv U.genome & karyotype↗
giftgenome & 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.
Flaveria trinervia is a species of flowering plant in the family Asteraceae known by the common names clustered yellowtops, speedyweed, and yellow twinstem. It is native to parts of the Americas, including the southeastern and southwestern United States (Florida, Texas, Arizona, New Mexico),Biota of North America Program 2014 county distribution map most of the Bahamas, Mexico, Belize, and parts of the Caribbean, especially Cuba, Cayman Islands, Jamaica, Hispaniola, Puerto Rico and Barbados.Flora of the West Indies It is also known in many other places as an introduced species and often a noxious weed, such as in Hawaii.Marin Life Photography photos in Hawai'iFlora of Zimbabwe Flaveria trinervia grows easily in many types of wet habitats, including saline and alkaline soils and highly disturbed habitat. This is an annual herb growing erect and known to exceed two meters (7 feet) in height. The lance-shaped to oval leaves are each up to 15 centimeters (8 inches) long and arranged oppositely in pairs around the stem, their bases sometimes fused together. The edges of the leaves generally have tiny widely spaced teeth. The inflorescence is a large dense cluster of many very small flower heads, sometimes over 300 in one cluster. Each flower head contains 0-1 yellow or whitish ray floret and 0-2 yellow disc florets.Flora of North America, Flaveria trinervia (Sprengel) C. Mohr, 1901. Clustered yellowtopsPowell, Albert Michael. 1979. Annals of the Missouri Botanical Garden 65(2): 628-629 description and commentary in English, distribution map on page 625 This plant exhibits C4 carbon fixation. The Australian species F. australasica is very similar and possibly closely related to F. trinervia. Some authors treat the two as distinct speciesPowell, Albert Michael. 1979. Annals of the Missouri Botanical Garden 65(2): 629-630 description and commentary in EnglishThe Plant List, Flaveria australasica Hook. while others consider F. australasica as a synonym of F. trinervia.Atlas of Living Australia, Flaveria trinervia (Spreng.) C.Mohr
No narrative description available for this taxon yet.
Size & morphology15
Life cycle & reproduction12
Diet & foraging1
Habitat & environment11
Physiology & chemistry2
Compounds documented for Flaveria trinervia across natural-product and food-composition databases — not just the ~150 nutrients on a classic label ("nutritional dark matter").
Compound class profile3 classes
Documented compounds8 total
| Compound | Class | Amount | Source |
|---|---|---|---|
| (7E)-8-[(R)-methylsulfinyl]trideca-1,7-dien-3,5,9,11-tetrayne | present | LOTUS | |
| (7Z)-8-methylsulfanyltrideca-1,7-dien-3,5,9,11-tetrayne | present | LOTUS | |
| 2,2':5',2''-Terthiophene | present | LOTUS | |
| 2-carboxy-D-arabinitol | present | LOTUS | |
| 8-Methylsulfanyltrideca-1,7-dien-3,5,9,11-tetrayne | present | LOTUS | |
| Trideca-1,3,5-trien-7,9,11-triyn | present | LOTUS | |
| Trideca-1,3,5-trien-7,9,11-triyne | present | LOTUS |
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 Flaveria trinervia 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 Flaveria trinervia 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 369×CCDB · book-ipcn67-71 · CCDB · book-indian_vol1 · CCDB · eflora +2
n 188×CCDB · ipcn-api-dl · CCDB · book-ipcn72
diploid inferred1×PloiDB · genus-scale
Sequencing statusassembly quality — how far to trust these numbers
Assembly level tells you how finished the sequence is — from fragmented contigs, through scaffolds, up to a full chromosome-level assembly. BUSCO % estimates completeness: the share of genes expected to be present that were actually found. These describe the data quality, not the organism.
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 type2 548 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 institutions70 of 102 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
| Institution | Specimens |
|---|---|
| Mexico City, MX | 172 |
| Kensington, AU | 157 |
| Brisbane, AU | 121 |
| Durango, MX | 110 |
| Palmerston, AU | 108 |
| Austin, US | 91 |
| Adelaide, AU | 80 |
| Museo Entomologico de Leonlocation not on record | 80 |
| Canberra, AU | 77 |
| Zapopan, MX | 65 |
| Tlalnepantla, MX | 59 |
| Saint Louis, US | 52 |
| Chapingo, MX | 50 |
| Bronx, US | 50 |
| Mount Annan, AU | 40 |
| Mérida, MX | 36 |
| Austin, US | 28 |
| Guasave, MX | 27 |
| Kew, GB | 24 |
| ASUlocation not on record | 21 |
| Miami, US | 16 |
| Tampa, US | 14 |
| EL PASO, US | 13 |
| Mexico City, MX | 11 |
| Canadian Department of Agriculturelocation not on record | 11 |
| Jena Microbial Resource Collectionlocation not on record | 10 |
| Ciudad de México, MX | 10 |
| Honolulu, US | 10 |
| BISHlocation not on record | 10 |
| San Diego, US | 9 |
| Zacatecas, MX | 9 |
| Riverside, US | 9 |
| Berlin, DE | 8 |
| San Francisco de Campeche, MX | 8 |
| Tapachula, MX | 7 |
| Albuquerque, US | 7 |
| Hobart, AU | 6 |
| San Luis Potosí, MX | 6 |
| Armidale, AU | 6 |
| University of Stellenboschlocation not on record | 6 |
| John T. Waterhouse Herbariumlocation not on record | 6 |
| Uppsala, SE | 5 |
| BGPAlocation not on record | 5 |
| Edinburgh, GB | 4 |
| Smithfield, AU | 4 |
| Juriquilla, MX | 4 |
| Mérida, MX | 3 |
| Tall Timbers Research Stationlocation not on record | 3 |
| Stockholm, SE | 3 |
| San Jose State University, Museum of Birds and Mammalslocation not on record | 3 |
| Wlocation not on record | 3 |
| Claremont, US | 2 |
| Giardini Botanici Hanburylocation not on record | 2 |
| La Paz, MX | 2 |
| Denver, US | 2 |
| Lubbock, US | 2 |
| CIIDIRlocation not on record | 2 |
| CASlocation not on record | 2 |
| Dekalb, US | 2 |
| Wuzhou, CN | 2 |
| Bern, CH | 2 |
| Flagstaff, US | 2 |
| Paris, FR | 2 |
| Chapel Hill, US | 2 |
| Montréal, CA | 2 |
| Puebla, MX | 2 |
| Tuxtla Gutiérrez, MX | 2 |
| US | 1 |
| James Cook Townsvillelocation not on record | 1 |
| Arusha, TZ | 1 |
| EAlocation not on record | 1 |
| Museo de Historia Natural Alfredo Dugés, Universidad de Guanajuatolocation not on record | 1 |
| Feira de Santana, BR | 1 |
| Autlán de Navarro, MX | 1 |
| DOI/NPS, Colonial National Historical Parklocation not on record | 1 |
| San Francisco, US | 1 |
| Davis, US | 1 |
| CEPLAClocation not on record | 1 |
| Phoenix, US | 1 |
| Frankfurt am Main | 1 |
| Mexico City, MX | 1 |
| Addis Ababa, ET | 1 |
| Universidad Juárez Autónoma de Tabascolocation not on record | 1 |
| MeiseBGlocation not on record | 1 |
| Natural History Museum Rotterdamlocation not on record | 1 |
| Uniwersytet Śląski w Katowicachlocation not on record | 1 |
| Burlington, US | 1 |
| DSMlocation not on record | 1 |
| San Diego Natural History Museum, Herbariumlocation not on record | 1 |
| INBIOlocation not on record | 1 |
| Valdosta State Universitylocation not on record | 1 |
| Chicago, US | 1 |
| UFBAlocation not on record | 1 |
| Baltimore, US | 1 |
| CJBGlocation not on record | 1 |
| Adam Mickiewicz University in Poznańlocation not on record | 1 |
| Bloomington, US | 1 |
| Ciudad Juárez, MX | 1 |
| Bangkok, TH | 1 |
| Laboratorio de Ictiologialocation not on record | 1 |
| Podgorica, ME | 1 |
| DOI/NPS, Little Rock Central High School National Historic Sitelocation 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 Flaveria trinervia 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.