Chamaecrista nictitans
(L.) Moench · speciesAt a glance
Sources13 archives
Databases and archives Chamaecrista nictitans's data was compiled from.
WikipediaWikimedia Foundation2 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility8 638 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI91 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics23 specimens↗
NCBIUS National Library of Medicinesequences↗
GRIN TaxonomyUSDA-ARSdistribution & uses↗
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.
Chamaecrista nictitans, the sensitive cassia, sensitive partridge pea, small partridge pea or wild sensitive plant, is a herbaceous species of legume widely distributed through the temperate and tropical Americas. It is an annual plant capable of rapid plant movement—its leaflets fold together when touched. It is similar to Chamaecrista fasciculata except that the leaves are smaller. C. nictitans is undesirable as a forage or hay but can be used for both in subtropical areas.
No narrative description available for this taxon yet.
Size & morphology11
Life cycle & reproduction5
Diet & foraging1
Habitat & environment12
Physiology & chemistry1
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 Chamaecrista nictitans 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 Chamaecrista nictitans 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 324×CCDB · ipcn-api-dl
2n 484×CCDB · ipcn-api-dl · CCDB · book-indian_vol1 · CCDB · book-fedorov +1
2n 161×GIFT · GIFT (floras)
n 164×CCDB · ipcn-api-dl · CCDB · Cannon, 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 type8 638 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 institutions142 of 286 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
| Institution | Specimens |
|---|---|
| Bangkok, TH | 153 |
| Saint Louis, US | 140 |
| Durango, MX | 132 |
| National Biodiversity Institute, Costa Ricalocation not on record | 119 |
| Mexico City, MX | 89 |
| ITVlocation not on record | 71 |
| ASUlocation not on record | 66 |
| Bronx, US | 63 |
| Kew, GB | 60 |
| Laboratorio de Ictiologialocation not on record | 54 |
| University of Stellenboschlocation not on record | 53 |
| UFMSlocation not on record | 50 |
| Cenargenlocation not on record | 49 |
| Brasília, BR | 49 |
| College Park, US | 43 |
| JBRJlocation not on record | 43 |
| Salvador, BR | 42 |
| Chaguaramas, TT | 40 |
| UNICAMPlocation not on record | 36 |
| Miami, US | 35 |
| Tapachula, MX | 29 |
| San Jose State University, Museum of Birds and Mammalslocation not on record | 29 |
| UFBAlocation not on record | 27 |
| Antiguo Cuscatlán, SV | 26 |
| Sociedad para el Estudio de los Recursos Bióticos de Oaxaca, A. C.location not on record | 23 |
| UTFPR-CPlocation not on record | 23 |
| Centro de Investigación en Biodiversidad y Conservación, Universidad Autónoma del Estado de Moreloslocation not on record | 23 |
| UFMGlocation not on record | 23 |
| Riverside, US | 22 |
| Masindi, UG | 22 |
| Feira de Santana, BR | 21 |
| UNIVASFlocation not on record | 21 |
| UFPElocation not on record | 20 |
| Istituto Agrario Castelnuovolocation not on record | 19 |
| Blumenau, BR | 19 |
| Bloomington, US | 19 |
| Brasília, BR | 19 |
| Chapingo, MX | 19 |
| Campo Mourão, BR | 18 |
| Berlin, DE | 18 |
| Porto Alegre, BR | 18 |
| UFESlocation not on record | 17 |
| Jackson, US | 17 |
| Museu Paraense Emílio Goeldilocation not on record | 16 |
| San José, CR | 16 |
| Instituto Amazónico de Investigaciones Científicas - SINCHIlocation not on record | 16 |
| UnBlocation not on record | 16 |
| Departamento de Sistematica e Ecologialocation not on record | 15 |
| Museum of Zoologylocation not on record | 15 |
| INBIOlocation not on record | 15 |
| Universidade Federal do Vale do São Franciscolocation not on record | 15 |
| INMAlocation not on record | 15 |
| Universidade Federal de Goiáslocation not on record | 14 |
| Ann Arbor, US | 14 |
| Austin, US | 14 |
| USP-IBlocation not on record | 14 |
| Universidad Juárez Autónoma de Tabascolocation not on record | 14 |
| EL PASO, US | 14 |
| Santa Cruz de la Sierra, BO | 13 |
| Federal University of Espírito Santolocation not on record | 13 |
| AUAlocation not on record | 13 |
| Ciudad de México, MX | 13 |
| UNESP-FCAlocation not on record | 13 |
| Norfolk, US | 12 |
| Universidad Nacional de Colombia (UNAL)location not on record | 12 |
| Stockholm, SE | 12 |
| UEMlocation not on record | 12 |
| ESALQlocation not on record | 12 |
| CASlocation not on record | 12 |
| Culiacán, MX | 12 |
| Fredericksburg, US | 11 |
| Altos de Pipe, VE | 11 |
| Chapel Hill, US | 10 |
| UESBlocation not on record | 10 |
| Florida Museum of Natural History- Zoology, Paleontology & Paleobotanylocation not on record | 10 |
| Universidade Federale do Rio Grande do Sullocation not on record | 10 |
| UNESP-ISlocation not on record | 10 |
| Juriquilla, MX | 9 |
| Universidade Federal do Maranhãolocation not on record | 9 |
| Aarhus, DK | 9 |
| Chongqing Museumlocation not on record | 9 |
| Guatemala City, GT | 9 |
| UEMAlocation not on record | 9 |
| CEPLAClocation not on record | 8 |
| UFSClocation not on record | 8 |
| Tall Timbers Research Stationlocation not on record | 8 |
| Clemson, US | 8 |
| Guasave, MX | 8 |
| Williamsburg, US | 8 |
| Denver, US | 7 |
| Instituto Nacional de Pesquisas da Amazônia (INPA)location not on record | 7 |
| US | 7 |
| Pelotas, BR | 7 |
| Columbia, US | 7 |
| Universidad de Antioquia (UdeA)location not on record | 7 |
| Santa Teresa, BR | 7 |
| Mexico City, MX | 7 |
| Xiamen, CN | 7 |
| Ivano-Frankivsk, UA | 7 |
| Universidade de São Paulolocation not on record | 7 |
| Paris, FR | 7 |
| URCAlocation not on record | 7 |
| Universidad de Caldas (UCaldas)location not on record | 7 |
| Empresa Pernambucana de Pesquisa Agropecuária, IPAlocation not on record | 6 |
| Ural Federal University "B. N. Yeltsin"location not on record | 6 |
| Philadelphia, US | 6 |
| Philadelphia, US | 6 |
| Universidade Federal do Ceara, Departamento de Biologialocation not on record | 6 |
| Cuiabá, BR | 6 |
| MEXUlocation not on record | 6 |
| Jena Microbial Resource Collectionlocation not on record | 6 |
| Johnson City, US | 6 |
| Pittsburg, US | 6 |
| Loja, EC | 5 |
| UFRPElocation not on record | 5 |
| Fort Worth, US | 5 |
| UFABClocation not on record | 5 |
| San Isidro, AR | 5 |
| Fundación Desarrollo y Ambiente FUNDAlocation not on record | 5 |
| Corrientes, AR | 5 |
| Mérida, MX | 5 |
| San Francisco de Campeche, MX | 5 |
| Tampa, US | 5 |
| Centro de Pesquisas Agropecuarias do Tropico Umidolocation not on record | 5 |
| Flagstaff, US | 5 |
| Millersville, US | 5 |
| UFRRJlocation not on record | 5 |
| Tuxtla Gutiérrez, MX | 4 |
| Maringá, BR | 4 |
| FUNEDlocation not on record | 4 |
| Tempe, US | 4 |
| Ilhéus, BR | 4 |
| FPMZBlocation not on record | 4 |
| Phoenix, US | 4 |
| OTSlocation not on record | 4 |
| Chicago, US | 4 |
| Cruz das Almas, BR | 4 |
| Hermosillo, MX | 4 |
| Tuxtla Gutiérrez, MX | 4 |
| Mérida, MX | 4 |
| IPA/SPlocation not on record | 4 |
| MAlocation not on record | 4 |
| Claremont, US | 4 |
| Mississippi State, US | 4 |
| QCNElocation not on record | 4 |
| University of Southern Mississippilocation not on record | 4 |
| IECOSlocation not on record | 4 |
| UFPIlocation not on record | 4 |
| Autlán de Navarro, MX | 4 |
| UFSMlocation not on record | 3 |
| UFPRlocation not on record | 3 |
| Tuscaloosa, US | 3 |
| Emporia, US | 3 |
| INTAlocation not on record | 3 |
| Washington, US | 3 |
| Museum of the Rockieslocation not on record | 3 |
| New Brunswick, US | 3 |
| Universidade Federal do Espírito Santolocation not on record | 3 |
| UNIVILLElocation not on record | 3 |
| Foz do Iguaçu, BR | 3 |
| UTFPR-DVlocation not on record | 3 |
| Minia, EG | 3 |
| Universidade Federal de Mato Grosso do Sul, Campus do Pantanallocation not on record | 3 |
| Valdosta State Universitylocation not on record | 3 |
| UNESP-RClocation not on record | 3 |
| Teresina, BR | 3 |
| Provo, US | 3 |
| UNESP-IBILCElocation not on record | 3 |
| Universidad de los Llanos (UniLlanos)location not on record | 3 |
| The University of Arizonalocation not on record | 3 |
| Knoxville, US | 3 |
| Portland, US | 2 |
| Baroda, IN | 2 |
| DOI/NPS, Mississippi National River & Recreation Arealocation not on record | 2 |
| Edinburgh, GB | 2 |
| BAYLUlocation not on record | 2 |
| Lake Charles, US | 2 |
| HUENFlocation not on record | 2 |
| University of Tennessee at Chattanoogalocation not on record | 2 |
| Universidad del Valle (UniValle)location not on record | 2 |
| Universidade Federal de Santa Catarinalocation not on record | 2 |
| San Angelo, US | 2 |
| Station d'Ecologie de Lamtolocation not on record | 2 |
| Jataí / Setor Industrial, BR | 2 |
| La Paz, BO | 2 |
| Fayetteville, US | 2 |
| Fairfax, US | 2 |
| Pontifícia Universidade Católica do Paranálocation not on record | 2 |
| Mexico City, MX | 2 |
| South Kensington, GB | 2 |
| China Agricultural Universitylocation not on record | 2 |
| Centro de Estudios y Colecciones Biológicas para la Conservaciónlocation not on record | 2 |
| Instituto de Ecología, Universidad Nacional Autónoma de Méxicolocation not on record | 2 |
| BMlocation not on record | 2 |
| HUAlocation not on record | 2 |
| Denton, US | 2 |
| Instituto para la Investigación y la Preservación del Patrimonio Cultural y Natural del Valle del Cauca - INCIVAlocation not on record | 2 |
| Facultad de Zootecnia y Ecología, Universidad Autónoma de Chihuahualocation not on record | 2 |
| Sanda, JP | 2 |
| Fortaleza, BR | 2 |
| Toyota city nature sanctuarylocation not on record | 2 |
| Universidade Federal do Rio Grande do Nortelocation not on record | 2 |
| Uberlândia, BR | 2 |
| UNITINSlocation not on record | 2 |
| Chicago, US | 2 |
| Sociedad Para el Estudio de los Recursos Bioticos de Oaxacalocation not on record | 2 |
| Dover, US | 2 |
| Instituto de Investigaciones Botánicas y Zoológicas - Prof. Rafael M. Moscoso, Universidad Autónoma de Santo Domingolocation not on record | 2 |
| Museo naturalistico del Frignano Ferruccio Minghellilocation not on record | 2 |
| Florida Museum of Natural Historylocation not on record | 1 |
| Riobamba, EC | 1 |
| Instituto de Investigación de Recursos Biológicos Alexander von Humboldt (IAvH)location not on record | 1 |
| Universidad Nacional Autonoma de Mexico, Instituto de Biologialocation not on record | 1 |
| Asheville, US | 1 |
| Pullman, US | 1 |
| Nijmegen, NL | 1 |
| HAWlocation not on record | 1 |
| Jardín Botánico José Celestino Mutis (JBBJCM)location not on record | 1 |
| HACAMlocation not on record | 1 |
| Oskarshamn, SE | 1 |
| Weymouth Woods Sandhills Nature Preservelocation not on record | 1 |
| Christchurch, NZ | 1 |
| Northridge, US | 1 |
| Institut de Biologia Evolutiva, (CSIC-UPF)location not on record | 1 |
| Elocation not on record | 1 |
| Universidad Pedagógica y Tecnológica de Colombia (UPTC)location not on record | 1 |
| GB | 1 |
| Londrina, BR | 1 |
| Cochabamba, BO | 1 |
| Córdoba, AR | 1 |
| Oswego, US | 1 |
| University of North Carolina at Pembrokelocation not on record | 1 |
| UFVJMlocation not on record | 1 |
| Columbus State University Herbariumlocation not on record | 1 |
| Universidad Nacional Federico Villarreallocation not on record | 1 |
| Universität Tübingenlocation not on record | 1 |
| San Francisco, US | 1 |
| Bogotá, D.C., CO | 1 |
| UTFPR-SLlocation not on record | 1 |
| Mexico City, MX | 1 |
| Lubbock, US | 1 |
| Universidade Paulistalocation not on record | 1 |
| BISHlocation not on record | 1 |
| Universidade Federal de Juiz de Foralocation not on record | 1 |
| Canadian Department of Agriculturelocation not on record | 1 |
| Toluca, MX | 1 |
| Universidade Federal do Oeste da Bahialocation not on record | 1 |
| UNESP, Campus São José Rio Prêtolocation not on record | 1 |
| Cambridge, US | 1 |
| DOI/NPS, Colonial National Historical Parklocation not on record | 1 |
| Instituto de Investigaciones Biológicas, Universidad Veracruzana, Región Xalapalocation not on record | 1 |
| La Paz, MX | 1 |
| Mazatlán, MX | 1 |
| Universidad Tecnológica del Chocó (UTCH)location not on record | 1 |
| Pontificia Universidad Javeriana (PUJ)location not on record | 1 |
| Gifu prefectural Museumlocation not on record | 1 |
| Salamanca, ES | 1 |
| Lord Fairfax Community Collegelocation not on record | 1 |
| UDESC-CAVlocation not on record | 1 |
| Boise, US | 1 |
| UFOPlocation not on record | 1 |
| Conway, US | 1 |
| St. Augustine, TT | 1 |
| US | 1 |
| UFSCarlocation not on record | 1 |
| Richmond, US | 1 |
| Dekalb, US | 1 |
| Logan, US | 1 |
| Santarém, BR | 1 |
| Burlington, US | 1 |
| Pondicherry, IN | 1 |
| Jardín Botánico de Cartagena "Guillermo Piñeres" (JBC)location not on record | 1 |
| Honolulu, US | 1 |
| Zacatecas, MX | 1 |
| GAlocation not on record | 1 |
| Embrapa Amazônia Oriental, Ministry of Agriculturelocation not on record | 1 |
| Puebla, MX | 1 |
| Beijing, CN | 1 |
| UNISANTAlocation not on record | 1 |
| INIREBlocation not on record | 1 |
| Olocation not on record | 1 |
| New Haven, US | 1 |
| UEPAlocation not on record | 1 |
| Mohonk Preservelocation not on record | 1 |
| Helsinki, FI | 1 |
| Cambridge, US | 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 Chamaecrista nictitans 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.