Krigia cespitosa

(Raf.) K.L.Chambers ex Vuilleumier · species

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Plantae/Tracheophyta/Magnoliopsida/Asterales/Asteraceae/Krigia

At a glance

Occurrence records1 797

Data sources8

Biological traits12

DNA specimens2

eDNA detections2

Sources8 archives

Databases and archives Krigia cespitosa's data was compiled from.

WikipediaWikimedia Foundation2 languages↗

BioWikiNetmultilingual Wikipediamultilingual↗

GBIFGlobal Biodiversity Information Facility1 797 records↗

ENAEuropean Nucleotide Archive · EMBL-EBI2 eDNA detections↗

BOLD SystemsCentre for Biodiversity Genomics2 specimens↗

GRIN TaxonomyUSDA-ARSdistribution & uses↗

CCDBChromosome Counts DB · Tel Aviv U.genome & karyotype↗

PloiDBPloidy Databasegenome & karyotype

On this page6 sections

Every layer below draws on the sources above — open one to explore it, or use ← → to move between tabs.

NarrativeWikipediaarticle

Traits & measurements3 literature sources12 traits

Occurrence & distributionGBIF1 797 records

Environmental DNA1 datasets · 0 countries2 detections

DNA & barcodingBOLD2 specimens

Genome at a glanceCCDB2n = 8

01Narrative

Krigia cespitosa, known as common dwarf-dandelion, opposite-leaved dwarf-dandelion, or weedy dwarfdandelion, is a North American species of plant in the family Asteraceae . It is native to northeastern Mexico (Nuevo León) and to the southeastern and south-central United States, from Florida to Texas and north as far as southeastern Nebraska, southern Illinois, and central West VirginiaUnited States Department of Agriculture plants profileBiota of North America Program 2014 county distribution map, Krigia caespitosa Krigia cespitosa is an annual herb up to 42 cm (16.8 inches) tall. One plant generally produces one flower head per flower stalk, each head with 12–35 yellow ray flowers but no disc flowers.Flora of North America, Krigia cespitosa (Rafinesque) K. L. Chambers, 1973. Common or opposite-leaved dwarfdandelion

No narrative description available for this taxon yet.

02Traits & measurements

SourcesWCVPGIFTTRY

Life cycle & reproduction2

Life spanannual

Raunkiær life formtherophyte

Diet & foraging1

Parasiteindependent

Habitat & environment6

Aquaticterrestrial

Climatetemperate

Climberself-supporting

Epiphyteterrestrial

Growth formherb

Woodinessnon-woody

Physiology & chemistry3

Leaf c432 mg/g

Leaf n34.55 mg/g

Specific leaf area (SLA)31.85 mm²/mg

05DNA & barcoding2 specimens

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 Krigia cespitosa has left across the world's sequence archives.

At a glance

DNA specimens2

Marker genes2

eDNA detections2

Marker genes sequenced

★ 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.

★ITS★ITS2

fungal barcode

06Genome at a glanceCCDB

The complete instruction manual Krigia cespitosa 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.

Chromosomes2n = 8 n = 4

Ploidydiploid inferred

Chromosome records8–82n range8median8mode7records

Chromosome-count records — grouped by value · 2n = full set, n = gamete · click a value for sources & references

2n 87×CCDB · ipcn-api-dl · CCDB · eflora

CCDB · ipcn-api-dl — Kim, K. J. & B. L. Turner. 1992. Systematic overview of Krigia (Asteraceae---Lactuceae). Brittonia 44(2): 173–198.

CCDB · ipcn-api-dl — Morton, J. K. 1981. Chromosome numbers in Compositae from Canada and the U.S.A. Bot. J. Linn. Soc. 82: 357–368.

CCDB · ipcn-api-dl — Chinnappa, C. C. 1981. Cytological studies in Krigia (Asteraceae). Canad. J. Genet. Cytol. 23: 67 1 –678.

CCDB · ipcn-api-dl — Chinnappa, C. C. & J. K. Morton. 1979a. Unusual chromosome associations in Krigia cespitosa (Compositae). Caryologia 32: 413–418.

CCDB · eflora

n 48×CCDB · ipcn-api-dl

CCDB · ipcn-api-dl — Kim, K. J. & T. J. Mabry. 1991. Phylogenetic and evolutionary implications of nuclear ribosomal DNA variation in dwarf dandelions (Krigia, Lactuceae, Asteraceae). Pl. Syst. Evol. 177: 53–69.

CCDB · ipcn-api-dl — Kim, K. J. & B. L. Turner. 1992. Systematic overview of Krigia (Asteraceae---Lactuceae). Brittonia 44(2): 173–198.

CCDB · ipcn-api-dl — Kim, K. J., B. L. Turner & R. K. Jansen. 1992. Phylogenetic and evolutionary implications of interspecific chloroplast DNA variation in Krigia (Asteraceae---Lactuceae). Syst. Bot. 17: 449–469.

CCDB · ipcn-api-dl — Tomb, A. S., K. L. Chambers, D. W. KYHOS, A. M. Powell & P. H. RAVEN. 1978. Chromosome numbers in the Compositae XIV. Lactuceae. Amer. J. Bot. 65: 717–721.

Ploidy records — measured levels and diploid/polyploid inferences · click for sources

diploid inferred1×PloiDB · genus-scale

PloiDB · genus-scale — chromEvol; reliability=0.761 ↗

08Occurrence & distribution

Record type1 797 records

Wild obs. + sensor1 530

Museum / vouchered267

Range

Area of Occupancy AOO5 540 km²

Wildobservation + sensor

Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.

Coordinate accuracy83% within 1 km

≤100 m 884≤1 km 141≤10 km 63>10 km 140

1 228 georeferenced · 302 without coordinates

Open the mapobservation + sensor1 530

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.

Coordinate accuracy28% within 1 km

≤100 m 7≤1 km 34≤10 km 89>10 km 15

145 georeferenced · 122 without coordinates

Open the institutions mapphysical evidence267

Wildobservation + sensor

Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.

10Collections & institutions

Holding institutions5 of 9 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	129
Austin, US	92
Jena Microbial Resource Collectionlocation not on record	30
Tall Timbers Research Stationlocation not on record	6
Riverside, US	5
Tampa, US	2
Florida Museum of Natural History- Zoology, Paleontology & Paleobotanylocation not on record	1
Albuquerque, US	1
Canadian Department of Agriculturelocation not on record	1

9 institutions · 267 of 267 vouchered records shown

09Environmental DNA2 detections

Where the DNA of Krigia cespitosa 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

Detections DNA found2

Studies independent surveys1

Signal confidence: weakweighed across independent studies, places & mapped detections

Where its DNA was found

0 of 2 detections have coordinates

Open the map0 countries0

How strong is each trace?

DNA read depthRead counts were not reported for this species — the map shows presence only, not how strong each trace was.

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.

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Krigia cespitosa

At a glance

Sources8 archives

Life cycle & reproduction2

Diet & foraging1

Habitat & environment6

Physiology & chemistry3

At a glance

Chromosomes & ploidyhow the DNA is packaged

Record type1 797 records

Range

Wildobservation + sensor

Museum / Voucheredphysical evidence

Wildobservation + sensor

Holding institutions5 of 9 geolocated

Signal

Where its DNA was found

How strong is each trace?

Record type1 797 records