Croptilon divaricatum

(Nutt.) Raf. · species

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Plantae/Tracheophyta/Magnoliopsida/Asterales/Asteraceae/Croptilon

At a glance

Occurrence records1 070

Data sources9

Biological traits9

DNA specimens2

eDNA detections1

Sources9 archives

Databases and archives Croptilon divaricatum's data was compiled from.

WikipediaWikimedia Foundation3 languages↗

BioWikiNetmultilingual Wikipediamultilingual↗

GBIFGlobal Biodiversity Information Facility1 070 records↗

ENAEuropean Nucleotide Archive · EMBL-EBI1 eDNA detections↗

BOLD SystemsCentre for Biodiversity Genomics2 specimens↗

NPASSNat. Product Activity & Species Sourcecompounds↗

Open Tree of LifeOpenTreephylogeny backbone↗

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

PloiDBPloidy Databasegenome & karyotype

On this page7 sections

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

NarrativeWikipediaarticle

Traits & measurements2 literature sources9 traits

Chemical compositionNPASS11 compounds

Occurrence & distributionGBIF1 070 records

Environmental DNA1 datasets · 0 countries1 detections

DNA & barcodingBOLD2 specimens

Genome at a glanceCCDB2n = 8

01Narrative

Croptilon divaricatum, called the slender scratchdaisy, is a North American species of flowering plants in the tribe Astereae within the family Asteraceae. It is native to the southeastern and south-central United States, in the states of Texas, Oklahoma, Arkansas, Louisiana, Mississippi, Alabama, Florida, Georgia, Virginia, and the Carolinas.Biota of North America Program 2014 county distribution map Croptilon divaricatum is an annual or perennial herb sometimes reaching a height of 150 cm (5 feet) and forming a large taproot. Each plant produces one or more yellow flower heads, each with up to 30 ray florets and as many as 100 disc florets.Flora of North America, Slender scratchdaisy, Croptilon divaricatum (Nuttall) Rafinesque, Fl. Tellur. 2: 47. 1837.

No narrative description available for this taxon yet.

02Traits & measurements

SourcesGIFTTRY

Life cycle & reproduction2

Life spanannual

Raunkiær life formtherophyte

Diet & foraging1

Parasiteindependent

Habitat & environment5

Aquaticterrestrial

Climberself-supporting

Epiphyteterrestrial

Growth formherb

Woodinessnon-woody

Physiology & chemistry1

Photosynthetic pathwayC3

03Chemical composition11 compounds

Compounds documented for Croptilon divaricatum across natural-product and food-composition databases — not just the ~150 nutrients on a classic label ("nutritional dark matter").

Compound class profile3 classes

Isoquinoline alkaloids7

Isoquinoline alkaloids $ Tetrahydroisoquinoline alkaloids3

Aporphine alkaloids1

Documented compounds11 total

Tissue Source Quantified only

Compound	Amount	Source
(1R)-20,21,25-trimethoxy-8,23-dioxa-15,30-diazaheptacyclo[22.6.2.29,12.13,7.114,18.027,31.022,33]hexatriaconta-3(36),4,6,9(35),10,12(34),14,18,20,22(33),24,26,31-tridecaen-6-ol	present	NPASS
(1R)-20,25-dimethoxy-8,23-dioxa-15,30-diazaheptacyclo[22.6.2.29,12.13,7.114,18.027,31.022,33]hexatriaconta-3(36),4,6,9(35),10,12(34),14,18,20,22(33),24,26,31-tridecaene-6,21-diol	present	NPASS
(1R,14S)-20,21,25-trimethoxy-15-methyl-8,23-dioxa-15,30-diazaheptacyclo[22.6.2.29,12.13,7.114,18.027,31.022,33]hexatriaconta-3(36),4,6,9(35),10,12(34),18,20,22(33),24,26,31-dodecaen-6-ol	present	NPASS
(1R,14S)-6,20,21,25-tetramethoxy-15,30-dimethyl-23-oxa-15,30-diazaheptacyclo[22.6.2.13,7.18,12.114,18.027,31.022,33]pentatriaconta-3(35),4,6,8,10,12(34),18,20,22(33),24,26,31-dodecaen-9-ol	present	NPASS
(1R,14S)-6,9,20,25-tetramethoxy-15,30-dimethyl-23-oxa-15,30-diazaheptacyclo[22.6.2.13,7.18,12.114,18.027,31.022,33]pentatriaconta-3(35),4,6,8,10,12(34),18,20,22(33),24,26,31-dodecaen-21-ol	present	NPASS
(1R,18S,33S)-20,25-dimethoxy-8,23-dioxa-15,30-diazaheptacyclo[22.6.2.29,12.13,7.114,18.027,31.022,33]hexatriaconta-3(36),4,6,9(35),10,12(34),14,19,21,24,26,31-dodecaene	present	NPASS
20,21,25-Trimethoxy-8,23-dioxa-15,30-diazaheptacyclo[22.6.2.29,12.13,7.114,18.027,31.022,33]hexatriaconta-1(30),3(36),4,6,9(35),10,12(34),14,18,20,22(33),24,26,31-tetradecaen-6-ol	present	NPASS
20,25-Dimethoxy-8,23-dioxa-15,30-diazaheptacyclo[22.6.2.29,12.13,7.114,18.027,31.022,33]hexatriaconta-1(30),3(36),4,6,9(35),10,12(34),14,18,20,22(33),24,26,31-tetradecaene-6,21-diol	present	NPASS
6,20,25-Trimethoxy-23-oxa-15,30-diazaheptacyclo[22.6.2.13,7.18,12.114,18.027,31.022,33]pentatriaconta-1(30),3(35),4,6,8,10,12(34),14,18,20,22(33),24,26,31-tetradecaene-9,21-diol	present	NPASS
Oxoxylopine	present	NPASS

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 Croptilon divaricatum has left across the world's sequence archives.

At a glance

DNA specimens2

Marker genes1

eDNA detections1

Countries1

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.

★ITS2

fungal barcode

06Genome at a glanceCCDB

The complete instruction manual Croptilon divaricatum 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 records8–102n range8median8mode4records

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

2n 83×CCDB · eflora · CCDB · book-fedorov

CCDB · eflora

CCDB · book-fedorov — Turner, Ellison 1960

CCDB · book-fedorov — Powell, Turner 1963

2n 101×CCDB · Cave1959

CCDB · Cave1959 — Jackson 1959a

n 49×CCDB · book-ipcn65 · CCDB · ipcn-api-dl · CCDB · book-ipcn66 +4

CCDB · book-ipcn65 — Smith 1965c

CCDB · ipcn-api-dl — Keil, D. J. 1979. In IOPB chromosome number reports LXIII. Taxon 28: 271–273.

CCDB · ipcn-api-dl — Semple, J. C. 1980. In Chromosome number reports LXVII. Taxon 29: 357–358.

CCDB · ipcn-api-dl — Powell, A. M. & S. A. Powell. 1978. Chromosome Numbers in Asteraceae. Madroño 25(3): 160–169.

CCDB · book-ipcn66 — E. B. Smith 1966a

CCDB · book-ipcn72 — STROTHER, J.L. 1972. Chromosome studies in western North American Compositae. Amer. J. Bot. 59: 242-247.

CCDB · book-ipcn67-71 — JONES, S.B. Jr. 1968. Chromosome numbers in southeastern United States Compositae I. Bull. Torrey Bot. Club 95: 393-395.

CCDB · book-ipcn73-74 — ANDERSON, L.C., D.W. KYHOS, T. MOSQUIN, A.M. POWEL~, & P.H. RAVEN. 1974. Chromosome numbers in Compositae. IX Haplopappus and other Astereae. Amer. J. Bot. 61: 665-671.

CCDB · Cave1963 — Powell & T. 1963

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

diploid inferred1×PloiDB · genus-scale

PloiDB · genus-scale — chromEvol; reliability=1.000 ↗

08Occurrence & distribution

Record type1 070 records

Wild obs. + sensor543

Museum / vouchered527

Range

Area of Occupancy AOO3 260 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 accuracy85% within 1 km

≤100 m 294≤1 km 56≤10 km 9>10 km 55

414 georeferenced · 129 without coordinates

Open the mapobservation + sensor543

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 accuracy38% within 1 km

≤100 m 22≤1 km 38≤10 km 68>10 km 28

156 georeferenced · 371 without coordinates

Open the institutions mapphysical evidence527

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 institutions37 of 57 geolocated

Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.

Institution	Specimens
Bronx, US	81
Tampa, US	48
Jena Microbial Resource Collectionlocation not on record	42
Austin, US	37
Fort Worth, US	31
Bangkok, TH	29
Jackson, US	29
BAYLUlocation not on record	17
Wuzhou, CN	16
Valdosta State Universitylocation not on record	16
US	15
University of Stellenboschlocation not on record	12
Tuscaloosa, US	11
GAlocation not on record	11
Columbia, US	10
Florida Museum of Natural History- Zoology, Paleontology & Paleobotanylocation not on record	10
Chapel Hill, US	8
Mississippi State, US	7
AUAlocation not on record	7
Tall Timbers Research Stationlocation not on record	7
Clemson, US	5
Norfolk, US	5
Emporia, US	5
Bloomington, US	4
University of Southern Mississippilocation not on record	4
Montréal, CA	4
Saint Louis, US	4
Weymouth Woods Sandhills Nature Preservelocation not on record	3
Riverside, US	3
Flagstaff, US	3
DOI/NPS, Colonial National Historical Parklocation not on record	3
EL PASO, US	3
GB	3
Little Rock, US	3
Moscow, US	3
Audubon Society -- Silver Bluff Audubon Center and Sanctuarylocation not on record	2
James F. Matthews Center for Biodiversity Studieslocation not on record	2
Canadian Department of Agriculturelocation not on record	2
Phoenix, US	2
DOI/NPS, Mississippi National River & Recreation Arealocation not on record	2
Baltimore, US	2
Provo, US	1
Miami, US	1
Tempe, US	1
DOI/NPS, Greenbelt Parklocation not on record	1
Williamsburg, US	1
Davis, US	1
Florida Museum of Natural Historylocation not on record	1
Lincoln, US	1
Asheville, US	1
Mexico City, MX	1
Denton, US	1
China Agricultural Universitylocation not on record	1
San Jose State University, Museum of Birds and Mammalslocation not on record	1
Dekalb, US	1
McWane Science Centerlocation not on record	1
Denver, US	1

57 institutions · 527 of 527 vouchered records shown

09Environmental DNA1 detections

Where the DNA of Croptilon divaricatum 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 found1

Studies independent surveys1

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

Where its DNA was found

0 of 1 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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Croptilon divaricatum

At a glance

Sources9 archives

Life cycle & reproduction2

Diet & foraging1

Habitat & environment5

Physiology & chemistry1

Compound class profile3 classes

Documented compounds11 total

At a glance

Chromosomes & ploidyhow the DNA is packaged

Record type1 070 records

Range

Wildobservation + sensor

Museum / Voucheredphysical evidence

Wildobservation + sensor

Holding institutions37 of 57 geolocated

Signal

Where its DNA was found

How strong is each trace?

Record type1 070 records