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NarrativeWikipediaarticle
Traits & measurements2 literature sources11 traits
Occurrence & distributionGBIF1 420 records
Genome at a glanceCCDB2n = 34
01Narrative
Hymenopappus artemisiifolius, the oldplainsman, is a North American species of flowering plant in the daisy family. It has been found only in the south-central United States, in Texas, Arkansas, and Louisiana.Biota of North America Program, 2014 county distribution map Its natural habitat is in sandy soils of prairies and open woodlands.Hymenopappus artemisiifolius Lady Bird Johnson Wildflower Society Hymenopappus artemisiifolius is a biennial herb up to 100 cm tall. It produces 20-60 flower heads per stem, each head with 40–60 white, yellow, purple, or red disc flowers but no ray flowers.Flora of North America, Hymenopappus artemisiifolius de Candolle 1836. Its flowers attract butterflies. Varieties Hymenopappus artemisiifolius var. artemisiifolius - Texas, Arkansas, Louisiana Hymenopappus artemisiifolius var. riograndensis B.L.Turner - Río Grande Valley in southern TexasTurner, Billie Lee. 1956. Rhodora 58(694): 305–306 descriptions in English and Latin, commentary in EnglishTurner, Billie Lee. 1956. Rhodora 58(694): 289 distribution map
No narrative description available for this taxon yet.
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 Hymenopappus artemisiifolius has left across the world's sequence archives.
At a glance
06Genome at a glanceCCDB
The complete instruction manualHymenopappus artemisiifolius 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.
Chromosome-count records — grouped by value · 2n = full set, n = gamete · click a value for sources & references
2n 343×CCDB · eflora · CCDB · book-fedorov
CCDB · eflora
CCDB · book-fedorov — Turner 1956b
n 173×CCDB · ipcn-api-dl · CCDB · Cave1956
CCDB · ipcn-api-dl — Keil, D. J. & D. J. Pinkava. 1976. Chromosome counts and taxonomic notes for Compositae from the United States and Mexico. Amer. J. Bot. 63: 1393–1403.
CCDB · Cave1956 — Turner a
Ploidy records — measured levels and diploid/polyploid inferences · click for sources
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Coordinate accuracy86% within 1 km
≤100 m 743≤1 km 128≤10 km 58>10 km 86
1 015 georeferenced · 298 without coordinates
Open the mapobservation + sensor1 313
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 accuracy25% within 1 km
≤100 m 2≤1 km 11≤10 km 30>10 km 10
53 georeferenced · 54 without coordinates
Open the institutions mapphysical evidence107
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 institutions21 of 26 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
Fort Worth, US
48
EL PASO, US
9
Austin, US
7
BAYLUlocation not on record
7
US
5
Chongqing Museumlocation not on record
4
Bronx, US
4
Texas Lutheran Universitylocation not on record
2
Davis, US
2
Burlington, US
2
Riverside, US
2
Stockholm, SE
1
Tampa, US
1
Philadelphia, US
1
Emporia, US
1
Saint Louis, US
1
San Angelo, US
1
Claremont, US
1
San Jose State University, Museum of Birds and Mammalslocation not on record
1
Mississippi State, US
1
Provo, US
1
DOI/NPS, Greenbelt Parklocation not on record
1
Baltimore, US
1
Edmonton, CA
1
Jackson, US
1
Bogotá, D.C., CO
1
26 institutions · 107 of 107 vouchered records shown
