Ambrosia psilostachya
DC. · speciesAt a glance
Occurrence records18 272
Data sources11
Biological traits51
DNA specimens25
eDNA detections13
Sources11 archives
Databases and archives Ambrosia psilostachya's data was compiled from.
WikipediaWikimedia Foundation9 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility18 272 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI13 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics25 specimens↗
LOTUSNatural Products (Wikidata)compounds↗
GRIN TaxonomyUSDA-ARSdistribution & uses↗
CCDBChromosome Counts DB · Tel Aviv U.genome & karyotype↗
GoaTGenomes on a Tree · Sangergenome & karyotype↗
PloiDBPloidy Databasegenome & karyotype
GLoBIGlobal Biotic Interactionsbiotic interactions↗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 & measurements5 literature sources51 traits
Chemical compositionLOTUS31 compounds
Occurrence & distributionGBIF18 272 records
Environmental DNA1 datasets · 5 countries13 detections
DNA & barcodingBOLD25 specimens
Genome at a glanceCCDB · GoaT1.9 Gbp
01Narrative
Ambrosia psilostachya is a species of ragweed known by the common names Cuman ragweed and perennial ragweed, and western ragweed.
No narrative description available for this taxon yet.
02Traits & measurements
SourcesGIFTAusTraitsLEDATRYWCVP
Size & morphology15
Leaf length85 mm
Leaf length max120 mm
Leaf length min50 mm
Leaf mass31.35 mg
Leaf size588 mm²
Leaf width30 mm
Leaf width max40 mm
Leaf width min20 mm
Plant height0.45 m
⚠ sources differ — GIFT: 0.45 m · AusTraits: 2 m · LEDA: 0.45 m · TRY: 0.23 m
Plant height generative0.55 m
Plant height max2 m
Plant height min0.2 m
Seed mass6.57 mg
Seed mass max6.73 mg
Seed mass min6.48 mg
Life cycle & reproduction14
Deciduousnessdeciduous
Dehiscenceindehiscent
Dispersal typeanimal
Flowering endOct
Flowering startAug
Flowering timeyynnnnnnyyyy
Life formperennial
Life spanperennial
Pollination syndromeinsect
Raunkiær life formcryptophyte
Reproduction asexualabsent
Resprouting capacityresprouts
Seed number0
Self fertilizationabsent
Diet & foraging2
Carnivorynon-carnivorous
Parasiteindependent
Habitat & environment11
Aquaticterrestrial
Climatetemperate
Climberself-supporting
Elevation max15 m
Epiphyteterrestrial
Fruit typeachene
Growth formherb
Habitat GIFTroadsides, managed
Leaf compoundnesssimple
Leaf shapelanceolate ovate
Woodinessnon-woody
Physiology & chemistry8
Leaf C:N ratio19.73 g/g
Leaf c403 mg/g
Leaf dry-matter content (LDMC)229 mg/g
⚠ sources differ — TRY: 229 mg/g · LEDA: 250 mg/g
Leaf n21.61 mg/g
Leaf p1.69 mg/g
Photosynthetic pathwayC3
Specific leaf area (SLA)15.76 mm²/mg
⚠ sources differ — TRY: 15.76 mm²/mg · LEDA: 19.34 mm²/mg · GIFT: 19.34 mm²/mg
Wood density266 mg/cm³
Other traits1
Diaspore typefruit with appendage
03Chemical composition31 compounds
Compounds documented for Ambrosia psilostachya across natural-product and food-composition databases — not just the ~150 nutrients on a classic label ("nutritional dark matter").
Compound class profile5 classes
Pseudoguaiane sesquiterpenoids14
Guaiane sesquiterpenoids9
Cinnamic acids and derivatives2
Germacrane sesquiterpenoids1
Cinnamic acids and derivatives $ Simple phenolic acids1
Documented compounds31 total
| Compound | Class | Amount | Source |
|---|---|---|---|
| (1aR,4S,4aS,7R,7aS,7bR)-1,1,4,7-Tetramethyldecahydro-1H-cyclopropa(e)azulene-4,7-diol | present | LOTUS | |
| (1R,2R,6R,9R,10S)-1,9-dimethyl-5-methylidene-3,14-dioxatricyclo[8.4.0.02,6]tetradecane-4,13-dione | present | LOTUS | |
| (1R,2R,6S,8E)-8-methyl-3-methylidene-5,14-dioxatricyclo[10.2.1.02,6]pentadeca-8,12(15)-diene-4,13-dione | present | LOTUS | |
| (1R,2S,6S)-1,9-dimethyl-5-methylidene-3,14-dioxatricyclo[8.4.0.02,6]tetradec-9-ene-4,13-dione | present | LOTUS | |
| (1S,3S,6S,10R,11S)-3,11-dimethyl-7-methylidene-2,9,12-trioxatetracyclo[9.4.0.01,3.06,10]pentadec-14-ene-8,13-dione | present | LOTUS | |
| (3aR,4S,6R,6aS,9aR,9bR)-4,6-dihydroxy-6,9-dimethyl-3-methylidene-4,5,6a,7,9a,9b-hexahydro-3aH-azuleno[4,5-b]furan-2-one | present | LOTUS | |
| (3aR,5S,5aS,7S,8R,8aS,9aR)-7,8-dihydroxy-5,8a-dimethyl-1-methylidene-4,5,5a,6,7,8,9,9a-octahydro-3aH-azuleno[6,5-b]furan-2-one | present | LOTUS | |
| (3aS,5R,5aS,7R,8R,8aS,9aS)-7,8-dihydroxy-5,8a-dimethyl-1-methylidene-4,5,5a,6,7,8,9,9a-octahydro-3aH-azuleno[6,5-b]furan-2-one | present | LOTUS | |
| (3aS,6S,6aS,8R,9S,9aS,9bS)-8,9-dihydroxy-6,9a-dimethyl-3-methylidene-4,5,6,6a,7,8,9,9b-octahydro-3aH-azuleno[4,5-b]furan-2-one | present | LOTUS | |
| (3aS,6S,6aS,9aR,9bR)-6,9a-dimethyl-3-methylidene-3a,4,5,6,6a,9b-hexahydroazuleno[8,7-b]furan-2,9-dione | present | LOTUS |
05DNA & barcoding25 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 Ambrosia psilostachya has left across the world's sequence archives.
At a glance
DNA specimens25
Marker genes5
eDNA detections13
Countries8
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.
★matK★rbcL★rbcLa★ITS★ITS2
plant barcodefungal barcode
06Genome at a glanceCCDB · GoaT
The complete instruction manual Ambrosia psilostachya 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
Genome size1 867 980 000 bp
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).
BACTERIUM Carsonella ruddii0.00016 Gb
FUNGUS0.04 Gb
INSECT0.25 Gb
THIS GENOME Ambrosia psilostachya1.87 Gb
HUMAN3.2 Gb
WHEAT17 Gb
FERN Tmesipteris160.45 Gb
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 = 72 n = 36
Ploidypolyploid inferred
Chromosome records36–722n range72median72mode6records
Chromosome-count records — grouped by value · 2n = full set, n = gamete · click a value for sources & references
2n 725×GoaT · Kew Plant DNA C-values Database · CCDB · ipcn-api-dl · CCDB · Cave1957 +1
GoaT · Kew Plant DNA C-values Database — ↗
CCDB · ipcn-api-dl — Love, A. & D. Love. 1982. In: IOPB chromosome number reports LXXVI. Taxon 31: 583–587.
CCDB · ipcn-api-dl — Hommel, P. W. F. M. & J. H. Wieffering. 1979. In IOPB chromosome number reports LXIII. Taxon 28: 277–278.
CCDB · Cave1957 — Mulligan
CCDB · Cave1958 — Wagner & Beals 1958
2n 361×CCDB · book-ipcn67-71
CCDB · book-ipcn67-71 — MILLER, H.E., T.J. MABRY, B.L. TURNER, & W.W. PAYNE. 1968. Infraspecific variation of sesquiterpene lactones in Ambrosia psilostachya (Compositael. Amer. J. Bot. 55: 316-324.
n 182×CCDB · ipcn-api-dl · CCDB · book-ipcn67-71
CCDB · ipcn-api-dl — Keil, D. J. & T. F. Stuessy. 1975. Chromosome counts of Compositae from the United States, Mexico and Guatemala. Rhodora 77: 171–195.
CCDB · book-ipcn67-71 — MILLER, H.E., T.J. MABRY, B.L. TURNER, & W.W. PAYNE. 1968. Infraspecific variation of sesquiterpene lactones in Ambrosia psilostachya (Compositael. Amer. J. Bot. 55: 316-324.
n 361×CCDB · Cave1962
CCDB · Cave1962 — Payne in Gebben et al. 1962
n 541×CCDB · ipcn-api-dl
CCDB · ipcn-api-dl — Keil, D. J. & T. F. Stuessy. 1975. Chromosome counts of Compositae from the United States, Mexico and Guatemala. Rhodora 77: 171–195.
Ploidy records — measured levels and diploid/polyploid inferences · click for sources
polyploid inferred1×PloiDB · genus-scale
PloiDB · genus-scale — chromEvol; reliability=1.000 ↗
08Occurrence & distribution
Record type18 272 records
Wild obs. + sensor13 909
Museum / vouchered4 260
Other103
Origin
Native60
Introduced106
Range
Area of Occupancy AOO34 768 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 8 513≤1 km 1 128≤10 km 1 302>10 km 367
11 310 georeferenced · 2 599 without coordinates
Open the mapobservation + sensor13 909
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 accuracy51% within 1 km
≤100 m 424≤1 km 657≤10 km 890>10 km 162
2 133 georeferenced · 2 127 without coordinates
Open the institutions mapphysical evidence4 260
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 institutions139 of 227 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 | 403 |
| San Diego, US | 297 |
| Austin, US | 214 |
| Bronx, US | 152 |
| Fort Worth, US | 142 |
| Riverside, US | 136 |
| Claremont, US | 123 |
| ASUlocation not on record | 110 |
| Madison, US | 103 |
| St. Paul, US | 103 |
| Chadron, US | 92 |
| Denver, US | 88 |
| Albuquerque, US | 73 |
| Durango, MX | 72 |
| BIO-UNIPIlocation not on record | 65 |
| Flagstaff, US | 63 |
| Jena Microbial Resource Collectionlocation not on record | 63 |
| DOI/NPS, Greenbelt Parklocation not on record | 61 |
| Saint Louis, US | 55 |
| Santa Barbara, US | 51 |
| San Luis Obispo, US | 49 |
| Ann Arbor, US | 48 |
| Musee des Dinosaures d'Esperaza (Aude)location not on record | 45 |
| DOI/NPS, Little Rock Central High School National Historic Sitelocation not on record | 43 |
| WINlocation not on record | 39 |
| Canadian Department of Agriculturelocation not on record | 37 |
| Mount Annan, AU | 37 |
| Lubbock, US | 36 |
| Mexico City, MX | 34 |
| LDlocation not on record | 34 |
| Davis, US | 33 |
| US | 32 |
| Bloomington, US | 30 |
| Lincoln, US | 29 |
| Logan, US | 28 |
| Los Angeles, US | 28 |
| BDBClocation not on record | 25 |
| Adelaide, AU | 24 |
| Emporia, US | 23 |
| EL PASO, US | 21 |
| Görlitz, DE | 21 |
| Chongqing Museumlocation not on record | 21 |
| Irvine, US | 20 |
| CASlocation not on record | 19 |
| Phoenix, US | 18 |
| Severin-McDaniel Insect Collectionlocation not on record | 17 |
| Green Bay, US | 17 |
| Spearfish, US | 17 |
| Texas Lutheran Universitylocation not on record | 17 |
| DOI/NPS, Colonial National Historical Parklocation not on record | 16 |
| Pittsburg, US | 16 |
| Provo, US | 15 |
| Brisbane, AU | 15 |
| US | 15 |
| Denton, US | 14 |
| Pullman, US | 14 |
| Pretoria, ZA | 12 |
| Adam Mickiewicz University in Poznańlocation not on record | 12 |
| University of Wisconsinlocation not on record | 11 |
| Missoula, US | 11 |
| Guasave, MX | 11 |
| Bangkok, TH | 11 |
| Bozeman, US | 10 |
| Burlington, US | 10 |
| Philadelphia, US | 9 |
| Tokushima, JP | 9 |
| Moscow State Universitylocation not on record | 9 |
| Canberra, AU | 9 |
| Uniwersytet Wrocławskilocation not on record | 9 |
| Little Rock, US | 9 |
| Boise, US | 9 |
| SLU Artdatabankenlocation not on record | 9 |
| Corvallis, US | 8 |
| Québec, CA | 8 |
| Jackson, US | 8 |
| University of Stellenboschlocation not on record | 8 |
| Florida Museum of Natural History- Zoology, Paleontology & Paleobotanylocation not on record | 7 |
| Mexico City, MX | 7 |
| BAYLUlocation not on record | 7 |
| Museo Entomologico de Leonlocation not on record | 7 |
| Chapel Hill, US | 7 |
| University of New Hampshirelocation not on record | 7 |
| Brussel, BE | 7 |
| Moscow, US | 7 |
| Paris, FR | 7 |
| South Kensington, GB | 7 |
| Tuscaloosa, US | 7 |
| WTUlocation not on record | 7 |
| Chapingo, MX | 7 |
| Tempe, US | 6 |
| BClocation not on record | 6 |
| Pomona Collegelocation not on record | 6 |
| Durango, US | 6 |
| Montréal, CA | 6 |
| Cambridge, US | 6 |
| Puebla, MX | 6 |
| Natural History Museum Rotterdamlocation not on record | 5 |
| Angwin, US | 5 |
| Kew, GB | 5 |
| Dekalb, US | 5 |
| Hermosillo, MX | 5 |
| USFSlocation not on record | 5 |
| Mississippi State, US | 4 |
| Staatliches Museum fuer Naturkunde Karlsruhe (State Museum of Natural History)location not on record | 4 |
| AUAlocation not on record | 4 |
| GBS RAN - Glavny Botanichesky Sad Rossijskoj Akademii Nauklocation not on record | 4 |
| Long Beach, US | 4 |
| Olocation not on record | 4 |
| Philadelphia, US | 4 |
| Stephenville, US | 4 |
| New Haven, US | 4 |
| Catalina Island Conservancylocation not on record | 4 |
| Naturalis Biodiversity Centerlocation not on record | 4 |
| Mlocation not on record | 4 |
| Juriquilla, MX | 4 |
| Provincia di Livornolocation not on record | 4 |
| Durban, ZA | 4 |
| Henderson State Universitylocation not on record | 4 |
| Davenport, US | 4 |
| Austin, US | 4 |
| Northridge, US | 4 |
| Odawara, JP | 4 |
| Valdosta State Universitylocation not on record | 4 |
| James F. Matthews Center for Biodiversity Studieslocation not on record | 3 |
| San Angelo, US | 3 |
| University of Guelph, OAC Herbariumlocation not on record | 3 |
| Ensenada, MX | 3 |
| GAlocation not on record | 3 |
| Cape Town, ZA | 3 |
| Vancouver, CA | 3 |
| Kensington, AU | 3 |
| Fargo, US | 3 |
| GB | 3 |
| Orem, US | 3 |
| Grand Junction, US | 3 |
| IDElocation not on record | 3 |
| Acadia Universitylocation not on record | 3 |
| Oskarshamn, SE | 3 |
| Uniwersytet Warszawskilocation not on record | 3 |
| Arcata, US | 3 |
| San Jose, US | 3 |
| Dresden, DE | 3 |
| US | 3 |
| Fayetteville, US | 3 |
| LINUlocation not on record | 2 |
| McWane Science Centerlocation not on record | 2 |
| Monastir, TN | 2 |
| Instituto de Investigaciones Biológicas, Universidad Veracruzana, Región Xalapalocation not on record | 2 |
| Weber State Universitylocation not on record | 2 |
| Museum of the Rockieslocation not on record | 2 |
| Chicago, US | 2 |
| Santa Cruz, US | 2 |
| Tampa, US | 2 |
| Linares, MX | 2 |
| The University of Arizonalocation not on record | 2 |
| Tall Timbers Research Stationlocation not on record | 2 |
| Facultad de Zootecnia y Ecología, Universidad Autónoma de Chihuahualocation not on record | 2 |
| Wlocation not on record | 2 |
| Nijmegen, NL | 2 |
| Uppsala, SE | 2 |
| Armidale, AU | 2 |
| Université Lavallocation not on record | 2 |
| Columbia, US | 2 |
| Loja, EC | 2 |
| Toronto, CA | 2 |
| Whitewater, US | 2 |
| Bergen, NO | 1 |
| Herbarium of South China Botanical Gardenlocation not on record | 1 |
| Museo Achille Folettolocation not on record | 1 |
| University of Lethbridgelocation not on record | 1 |
| Cheney, US | 1 |
| Mexico City, MX | 1 |
| Hobart, AU | 1 |
| MeiseBGlocation not on record | 1 |
| Fullerton, US | 1 |
| Oulu, FI | 1 |
| Zürich, CH | 1 |
| TROMlocation not on record | 1 |
| LPMMBHlocation not on record | 1 |
| Tomioka, JP | 1 |
| Mérida, MX | 1 |
| Tsukuba, JP | 1 |
| sonstHerblocation not on record | 1 |
| Museo de Historia Natural Alfredo Dugés, Universidad de Guanajuatolocation not on record | 1 |
| Frankfurt am Main | 1 |
| University of Southern Mississippilocation not on record | 1 |
| MEXUlocation not on record | 1 |
| John May Museum of Natural Historylocation not on record | 1 |
| Bureau of Land Management, Caliente Field Officelocation not on record | 1 |
| Clemson, US | 1 |
| Saint John, CA | 1 |
| Vitoria, ES | 1 |
| Anchorage, US | 1 |
| Institut und Museum fuer Geologie und Palaeontologielocation not on record | 1 |
| Tromso University Museumlocation not on record | 1 |
| València, ES | 1 |
| University of Alberta Museumslocation not on record | 1 |
| La Paz, MX | 1 |
| Nagano City, JP | 1 |
| Podgorica, ME | 1 |
| San Diego Natural History Museum, Herbariumlocation not on record | 1 |
| Waverly, US | 1 |
| GZUlocation not on record | 1 |
| Science Museum of Minnesotalocation not on record | 1 |
| Henderson, US | 1 |
| Macomb, US | 1 |
| New Mexico Museum of Natural History and Sciencelocation not on record | 1 |
| Stockholm, SE | 1 |
| Zacatecas, MX | 1 |
| San Diego Natural History Museumlocation not on record | 1 |
| Hudson, US | 1 |
| Kochi, JP | 1 |
| South African National Biodiversity Institute, Compton Herbariumlocation not on record | 1 |
| SIHUlocation not on record | 1 |
| Museo civico La Terra e l'Uomo di Crocetta del Montellolocation not on record | 1 |
| Hiratsuka City Museumlocation not on record | 1 |
| Instituto de Ecología Aplicada, Universidad Autónoma de Tamaulipaslocation not on record | 1 |
| KURAlocation not on record | 1 |
| Trondheim, NO | 1 |
| Meguro Parasitological Museumlocation not on record | 1 |
| CIIDIRlocation not on record | 1 |
| Uniwersytet Śląski w Katowicachlocation not on record | 1 |
| Miami, US | 1 |
| DULlocation not on record | 1 |
| Beijing, CN | 1 |
| Instituto Nacional de Biodiversidad Herbario, Costa Ricalocation not on record | 1 |
| Sociedad para el Estudio de los Recursos Bióticos de Oaxaca, A. C.location not on record | 1 |
227 institutions · 4 020 of 4 260 vouchered records shown · 234 without an institution code
09Environmental DNA13 detections
Where the DNA of Ambrosia psilostachya 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 found13
Studies independent surveys1
Countries5
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 13 detections have coordinates
Open the map5 countries0
Transition Zone GrasslandRiparian with Platanus racemosa, Quercus agr…
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.
Modelled climatemodelled
−15°Ctemperature across detection sites+40°C
Temperature median16.9 °C -7.50–20.4
Seasonal swing summer↔winter13.6 °C
Max temp (day)19.2 °C -3.80–25.4
Min temp (night)14.1 °C -10.8–15.9
Precipitation77.6 mm/mo 2.60–95.0
Air humidity63.4 % 57.4–68.1
Moisture balance-19.2 mm/mo
Vapour deficit707 Pa 128–1,006
Wind speed3.30 m/s
Cloud cover42.4 % 26.5–53.2
CHELSA 1981–2010, ~9 km grid, at location & month of 11 detection points · median with p10–p90 · reflects where sampling happened, not only the true niche
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.