Acorus calamus
speciesAt a glance
Occurrence records54 784
Data sources16
Biological traits124
DNA specimens91
eDNA detections164
Sources16 archives
Databases and archives Acorus calamus's data was compiled from.
WikipediaWikimedia Foundation20 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility54 784 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI164 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics91 specimens↗
dukesphytochemcompounds
LOTUSNatural Products (Wikidata)compounds↗
NPASSNat. Product Activity & Species Sourcecompounds↗
GRIN TaxonomyUSDA-ARSdistribution & uses↗
Open Tree of LifeOpenTreephylogeny backbone↗
CCDBChromosome Counts DB · Tel Aviv U.genome & karyotype↗
GoaTGenomes on a Tree · Sangergenome & karyotype↗
NCBIUS National Library of Medicinegenome & karyotype↗
Paleobiology DatabasePBDB consortiumfossil record↗
WikidataWikimedia Foundationstructured facts↗
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 sources124 traits
Chemical compositionDukesPhytochem · LOTUS · NPASS550 compounds
Occurrence & distributionGBIF54 784 records
Environmental DNA1 datasets · 10 countries164 detections
DNA & barcodingBOLD91 specimens
Genome at a glanceCCDB · GoaT · NCBI773 Mbp
01Narrative
Acorus calamus (also called sweet flag, sway or muskrat root, among many common names) is a species of flowering plant with psychoactive chemicals. It is a tall wetland monocot of the family Acoraceae, in the genus Acorus. Although used in traditional medicine over centuries to treat digestive disorders and pain, there is no clinical evidence for its safety or efficacy – and ingested calamus may be toxic – leading to its commercial ban in the United States.
No narrative description available for this taxon yet.
02Traits & measurements
SourcesGIFTLEDAUSDATRYWCVP
Size & morphology9
Leaf mass755 mg
Leaf size31 623 mm²
⚠ sources differ — TRY: 31 623 mm² · LEDA: 10 067 mm² · GIFT: 10 067 mm²
Plant height1.15 m
⚠ sources differ — GIFT: 1.15 m · LEDA: 0.9 m · USDA: 1.52 m · TRY: 1.22 m
Plant height generative0.9 m
Plant height max1.2 m
Plant height min0.6 m
Seed mass3.77 mg
⚠ sources differ — TRY: 3.77 mg · LEDA: 1.52 mg · GIFT: 2.05 mg
Seed mass max3.72 mg
Seed mass min3.72 mg
Life cycle & reproduction35
After harvest regrowth rateModerate
Bloom periodLate Spring
Coppice potentialNo
Deciduousnessdeciduous
Dehiscenceindehiscent
Dispersal typeself
Flower colouryellow
Flower conspicuousNo
Flowering endJul
Flowering startJun
Fruit seed period beginSummer
Fruit seed period endSummer
Growth rate USDAModerate
Life formperennial or rhizomatous geophyte
Life spanperennial
⚠ sources differ — TRY: perennial · LEDA: poly-annuals 5-50 years (medium-lived perennials) · GIFT: perennial
Lifespan categoryModerate
Pollination modebiotic
Pollination syndromeinsect
Propagated by bare rootYes
Propagated by bulbNo
Propagated by containerYes
Propagated by cormNo
Propagated by cuttingsNo
Propagated by seedNo
Propagated by sodNo
Propagated by sprigsYes
Propagated by tubersNo
Raunkiær life formcryptophyte
Reproduction asexualabsent
Resprout abilityNo
Seed number0
Seed spread rateNone
Seedling vigorLow
Sex typehermaphrodite
Vegetative spread rateModerate
Diet & foraging2
Carnivorynon-carnivorous
Parasiteindependent
Habitat & environment30
Active growth periodSpring and Summer
Adapted to coarse textured soilsYes
Adapted to fine textured soilsNo
Adapted to medium textured soilsYes
Aquaticterrestrial
BloatNone
Climatetemperate
Climberself-supporting
Elevation max2 800 m
Elevation mean1 800 m
Elevation min600 m
Epiphyteterrestrial
Foliage colorGreen
Foliage porosity summerDense
Foliage porosity winterPorous
Foliage textureCoarse
Fruit colourbrown
Fruit typeberry
Growth formherb
Growth form USDARhizomatous
Habitat GIFTlakes, rivers, shores, swamps
Hedge toleranceNone
Known allelopathNo
Leaf retentionNo
Low growing grassNo
Mycorrhiza typenon-mycorrhizal
Root depth min12 in
Shape and orientationSemi-Erect
Small grainNo
Woodinessnon-woody
Physiology & chemistry26
Anaerobic toleranceHigh
C:N ratioHigh
Caco3 toleranceMedium
Cold stratification requiredNo
Drought toleranceNone
Fertility requirementMedium
Fire resistantNo
Fire toleranceHigh
Frost free days min90 days
Leaf dry-matter content (LDMC)191 mg/g
⚠ sources differ — TRY: 191 mg/g · LEDA: 247 mg/g
Leaf n18 mg/g
Leaf p0.3 mg/g
Moisture useHigh
Nitrogen fixation levelNone
Nitrogen fixingnon_nitrogen_fixer
Photosynthetic pathwayC3
Precipitation max60 in
Precipitation min32 in
Protein potentialLow
Salinity toleranceLow
Seed longevity index0
Shade toleranceHigh
Soil pH max7.2 pH
Soil pH min5.2 pH
Specific leaf area (SLA)34.0 mm²/mg
⚠ sources differ — TRY: 34.0 mm²/mg · LEDA: 24.48 mm²/mg · GIFT: 25.56 mm²/mg
Temperature min-38 °F
Uses & economy15
Berry nut seed productNo
Christmas tree productNo
Commercial availabilityRoutinely Available
Fodder productNo
Lumber productNo
Naval store productNo
Nursery stock productYes
Palatable browse animalLow
Palatable graze animalLow
Palatable humanNo
Post productNo
Pulpwood productNo
Seeds per pound498 454 per lb
ToxicityNone
Veneer productNo
Other traits7
Diaspore typegenerative dispersule
Fall conspicuousNo
Fruit seed abundanceLow
Fruit seed conspicuousNo
Fruit seed persistenceNo
Planting density max4 850 per acre
Planting density min2 700 per acre
03Chemical composition550 compounds
Compounds documented for Acorus calamus across natural-product and food-composition databases — not just the ~150 nutrients on a classic label ("nutritional dark matter").
💊 Medicinal use documented
Compound class profile5 classes
Cadinane sesquiterpenoids48
Acorane sesquiterpenoids28
Aromadendrane sesquiterpenoids24
Acyclic monoterpenoids20
Cinnamic acids and derivatives19
Documented compounds550 total
| Compound | Class | Amount | Source |
|---|---|---|---|
| STARCH | 400,000 ppm | DukesPhytochem | |
| EO | 100,000 ppm | DukesPhytochem | |
| BETA-ASARONE | 80,000 ppm | DukesPhytochem | |
| ASARONE | 48,000 ppm | DukesPhytochem | |
| RESIN | 25,000 ppm | DukesPhytochem | |
| POTASSIUM | 16,000 ppm | DukesPhytochem | |
| TANNIN | 15,000 ppm | DukesPhytochem | |
| ISOEUGENOL | 12,510 ppm | DukesPhytochem | |
| MUCILAGE | 8,000 ppm | DukesPhytochem | |
| CALCIUM | 7,040 ppm | DukesPhytochem |
05DNA & barcoding91 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 Acorus calamus has left across the world's sequence archives.
At a glance
DNA specimens91
Marker genes8
eDNA detections164
Countries10
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.
★COI-5P★matK★rbcL★rbcLa★ITS★ITS1★ITS2trnH-psbA
animal barcodeplant barcodefungal barcodemarker
06Genome at a glanceCCDB · GoaT · NCBI
The complete instruction manual Acorus calamus 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 size772 620 000 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 Acorus calamus0.77 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 = 36 n = 18
Ploidy4× tetraploid · measured
Chromosome records18–482n range36median36mode51records
Chromosome-count records — grouped by value · 2n = full set, n = gamete · click a value for sources & references
2n 3621×GoaT · Kew Plant DNA C-values Database · CCDB · slov-fl · CCDB · iapt +6
GoaT · Kew Plant DNA C-values Database — ↗
CCDB · slov-fl — Murín A. & Májovský J., 1976: [Report], pp. 487-488. - In: Löve Á. (ed.), IOPB Chromosome number reports LIII, Taxon 25 /4.
CCDB · iapt — IAPT/IOPB Chromosome Data 14
CCDB · poland — Skali?ska M., Piotrowicz M., Soko?owska-Kulczycka A. et al. 1961. Further additions to chromosome numbers of Polish Angiosperms. Acta Soc. Bot. Pol. 30, 463-489.
CCDB · book-ipcn65 — Love & Dive 1957a, b
CCDB · ipcn-api-dl — Dmitrieva, S. A. & V. I. Parfenov. 1985. Kariologicheskaja kharakteristika nekotorykh vidov poleznykh rastenij flory Belorussii. Izv. Akad. Nauk Belorussk. SSR, Ser. Biol. Nauk 6: 3–8.
CCDB · ipcn-api-dl — Packer, J. & G. Ringius. 1984. The distribution and status of Acorus (Araceae) in Canada. Canad. J. Bot. 62: 2248–2252.
CCDB · ipcn-api-dl — Sokolovskaya, A. P. & N. S. Probatova. 1985. Chromosome numbers in the vascular plants from the Primorye territory, Kamchatka, region, Amur valley and Sakhalin. Bot. Zhurn. SSSR 70(7): 997–999.
CCDB · ipcn-api-dl — Baytop, A. 1979. Acorus calamus in Turkey. J. Fac. Pharm. Ankara Univ. 9: 12–17.
CCDB · ipcn-api-dl — Okada, H. 1989. Chromosome counts of some plants collected from west Sumatra. In M. Hotta (editor), Diversity and Plant--Animal Interaction in Equatorial Rain Forests, Report of the 1987--1988 Sumatra Research. Occas. Pap. Kagoshima Univ. Res. Center S. Pacific 16: 11–14.
CCDB · ipcn-api-dl — Rudyka, E. G. 1990. Chromosome numbers of vascular plants from the various regions of the USSR. Bot. Žhurn. (Moscow & Leningrad) 75: 1783–1786.
CCDB · ipcn-api-dl — Murin, A. 1976. In: Index of chromosome numbers of Slovian flora. Part 4. Acta Fac. Rerum Nat. Univ. Comenianae, Bot. 25: 1–18.
CCDB · ipcn-api-dl — Probatova. 2006. Chromosome numbers of plants of the Primorsky Territory, the Amur River basin and Magadan region. Bot. Žhurn. (Moscow & Leningrad) 91(3): 491–509.
CCDB · book-indian_vol2 — Wulff, H. D. 193 9b ; Jones, G.B. 1957 ; Love, A. & lOve, D. 1957 ; Sokolowska-Kulczycka, A. (Skalinska, M. et al. 1961) ; Murin, A. & Majovsky, J. 1976
CCDB · book-fedorov — Wulff 1939b
CCDB · book-fedorov — Jones G. E. 1957
CCDB · book-fedorov — Love A., Love D. 1957c
CCDB · book-fedorov — Sokolowska-Kulczycka (Skalinska ct al. 1961)
CCDB · CromoCat 2015 — Chepinoga, V. V., Gnutikov, A. A., Lubogoschinsky, P. I. & Fleckenstein, K. M. (2012). IAPT/IOPB Chromosome Data 13 Taxon 61:889-891
CCDB · CromoCat 2015 — Probatova, N. S., Seledets, V. P., Gnutikov, A. A. & Shatokhina, A. V. (2008). IAPT/IOPB Chromosome Data 6 Taxon 57(4): 1267-1273
CCDB · CromoCat 2015 — Rudyka, E. G. (1990). Chromosome numbers of vascular plants from the various regions of the USSR. Bot. Zurn. 75:1783-1786
2n 2418×CCDB · iapt · CCDB · book-ipcn65 · CCDB · ipcn-api-dl +4
CCDB · iapt — IAPT/IOPB Chromosome Data 6
CCDB · iapt
CCDB · book-ipcn65 — Love & Ltive 1957a, b
CCDB · book-ipcn65 — Love & Love 1957a, b
CCDB · ipcn-api-dl — Packer, J. & G. Ringius. 1984. The distribution and status of Acorus (Araceae) in Canada. Canad. J. Bot. 62: 2248–2252.
CCDB · ipcn-api-dl — Love, A. & D. Love. 1980b. In Chromosome number reports LXIX. Taxon 29: 707–709.
CCDB · ipcn-api-dl — Subramanian, D. & M. Munian. 1988. Cytotaxonomical studies in south Indian Araceae. Cytologia 53: 59–66.
CCDB · ipcn-api-dl — Wang, H., W. L. Li, Z. j. Gu & Y. y. Chen. 2001. Cytological study on Acorus L. in southwestern China, with some cytogeographical notes on A. calamus. Acta Bot. Sin. 43(4): 354–358.
CCDB · book-indian_vol2 — Vaarama Love, A. & Love, D. 1948) ; Wieffering, J.H. 1972
CCDB · book-indian_vol2 — Larsen, K. 1969
CCDB · eflora
CCDB · book-fedorov — Love A., Love D.
CCDB · book-fedorov — C. n. I. 1964)
CCDB · book-fedorov — Vaarama (Love A., LOve D. 1948)
CCDB · CromoCat 2015 — Chepinoga, V. V., Gnutikov, A. A., Enushchenko, I. V. & Chepinoga, A. V. (2008). IAPT/IOPB Chromosome Data 6 Taxon 57(4): 1267-1273
CCDB · iapt — IAPT/IOPB Chromosome Data 20
CCDB · iapt — IAPT/IOPB Chromosome Data 22
2n 185×CCDB · book-indian_vol2 · CCDB · book-fedorov · CCDB · book-atlas-flowering-plants
CCDB · book-indian_vol2 — Dudley, M.G. 1937 ; Malvesin-Fabre, G. 1945 (Delay, C. 1951)
CCDB · book-fedorov — Dudley 1937
CCDB · book-fedorov — Malvesin-Fabre Hl4!i
CCDB · book-fedorov — Delay 1951) 'ln
CCDB · book-atlas-flowering-plants — D. 1951
2n 445×CCDB · book-indian_vol2 · CCDB · book-fedorov
CCDB · book-indian_vol2 — Kurakubo, Y. 1940; Larsen, K. 1969 ; Hotta, M. 1971
CCDB · book-indian_vol2 — Ito, T. 1942
CCDB · book-fedorov — Ito 1942
CCDB · book-fedorov — Kurakubo 1940
CCDB · book-fedorov — D. 1955)
2n 452×CCDB · ipcn-api-dl · CCDB · book-indian_vol2
CCDB · ipcn-api-dl — Ramachandran, K. 1978. Cytological studies on South Indian Araceae. Cytologia 43: 289–303.
CCDB · book-indian_vol2 — Ramachandran, K. 1978
2n 351×CCDB · ipcn-api-dl
CCDB · ipcn-api-dl — Krahulcová, A. 2003. Chromosome numbers in selected monocotyledons (Czech Republic, Hungary, and Slovakia). Preslia 75: 97–113.
2n 421×CCDB · ipcn-api-dl
CCDB · ipcn-api-dl — Sharma, A. K. 1970. Annual report, 1967-1968. Res. Bull. Univ. Calcutta Cytogenetics Lab. 2: 1–50.
2n 481×CCDB · book-ipcn65
CCDB · book-ipcn65 — Love & Love 1957a, b
n 01×CCDB · CromoCat 2015
CCDB · CromoCat 2015 — Chepinoga, V. V., Gnutikov, A. A., Lubogoschinsky, P. I. & Fleckenstein, K. M. (2012). IAPT/IOPB Chromosome Data 13 Taxon 61:889-891
Ploidy records — measured levels and diploid/polyploid inferences · click for sources
tetraploid1×GoaT · Kew Plant DNA C-values Database
GoaT · Kew Plant DNA C-values Database
Sequencing statusassembly quality — how far to trust these numbers
Assembly level tells you how finished the sequence is — from fragmented contigs, through scaffolds, up to a full chromosome-level assembly. BUSCO % estimates completeness: the share of genes expected to be present that were actually found. These describe the data quality, not the organism.
Assembly levelChromosome
07Deep time~0.1 Ma lineage
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
DNA clock origin0.1 Ma TimeTree
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.
DNA clock origin
How it livedPBDB
Dietphotoautotroph
08Occurrence & distribution
Record type54 784 records
Wild obs. + sensor48 781
Museum / vouchered5 852
Cultivated / captive22
Other129
Origin
Native9
Introduced2 090
Range
Area of Occupancy AOO81 648 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 accuracy53% within 1 km
≤100 m 11 567≤1 km 6 491≤10 km 15 320>10 km 613
33 991 georeferenced · 14 790 without coordinates
Open the mapobservation + sensor48 781
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 accuracy32% within 1 km
≤100 m 159≤1 km 920≤10 km 1 962>10 km 355
3 396 georeferenced · 2 456 without coordinates
Open the institutions mapphysical evidence5 852
Cultivated / Captivenot free-living
A living individual in a botanical garden, zoo or nursery — cultivated or kept, not free-living.
Coordinate accuracy0% within 1 km
≤10 km 3>10 km 17
20 georeferenced · 2 without coordinates
Open the mapnot free-living22
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 institutions161 of 291 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
| Institution | Specimens |
|---|---|
| Uniwersytet Wrocławskilocation not on record | 1 454 |
| Helsinki, FI | 224 |
| LDlocation not on record | 216 |
| Chongqing Museumlocation not on record | 161 |
| Moscow State Universitylocation not on record | 157 |
| Olocation not on record | 146 |
| Uppsala, SE | 128 |
| MeiseBGlocation not on record | 117 |
| Beijing, CN | 112 |
| BFLlocation not on record | 101 |
| Philadelphia, US | 89 |
| SLU Artdatabankenlocation not on record | 81 |
| South Kensington, GB | 70 |
| Irkutsk State Universitylocation not on record | 67 |
| Turku, FI | 56 |
| Tartu, EE | 52 |
| Salzburg, AT | 51 |
| Oskarshamn, SE | 46 |
| Bern, CH | 46 |
| Adam Mickiewicz University in Poznańlocation not on record | 45 |
| Tsukuba, JP | 45 |
| Yangling, CN | 45 |
| Chicago, US | 43 |
| Museo civico La Terra e l'Uomo di Crocetta del Montellolocation not on record | 42 |
| Wuzhou, CN | 37 |
| Sanda, JP | 35 |
| Bloomington, US | 32 |
| Bangkok, TH | 29 |
| Institute of Applied Ecology, Academia Sinicalocation not on record | 29 |
| TUR-Alocation not on record | 29 |
| Görlitz, DE | 29 |
| Guangzhou, CN | 28 |
| Museum Ludovicae Ulricae, Zoology Institute of the University of Uppsalalocation not on record | 27 |
| Bergen, NO | 27 |
| Université Lavallocation not on record | 26 |
| IFR-DNFlocation not on record | 26 |
| Kuopio, FI | 26 |
| Nanjing, CN | 25 |
| Kunming, CN | 25 |
| Oulu, FI | 25 |
| University of New Hampshirelocation not on record | 24 |
| Québec, CA | 24 |
| GBS RAN - Glavny Botanichesky Sad Rossijskoj Akademii Nauklocation not on record | 23 |
| University of Stellenboschlocation not on record | 23 |
| Tallinn, EE | 22 |
| Bando, JP | 22 |
| New Haven, US | 22 |
| Shinshu Universitylocation not on record | 22 |
| Green Bay, US | 22 |
| Saint Louis, US | 22 |
| Chiba, JP | 19 |
| Provincia di Livornolocation not on record | 18 |
| inatura Erlebnis Naturschau GmbHlocation not on record | 18 |
| Longwood Universitylocation not on record | 17 |
| Lanzhou, CN | 17 |
| Wuhan, CN | 16 |
| Trondheim, NO | 16 |
| Zürich, CH | 16 |
| Fukushima Universitylocation not on record | 15 |
| Uniwersytet Warszawskilocation not on record | 15 |
| Mlocation not on record | 14 |
| International Salmonella Centre (W.H.O.)location not on record | 13 |
| Dresden, DE | 13 |
| Vancouver, CA | 13 |
| Tomioka, JP | 12 |
| FJIDClocation not on record | 12 |
| Guilin, CN | 11 |
| Xian, CN | 11 |
| Porrentruy, CH | 11 |
| Chadron, US | 11 |
| Saint John, CA | 10 |
| University of Wisconsinlocation not on record | 10 |
| College Park, US | 10 |
| Montréal, CA | 10 |
| BRNUlocation not on record | 10 |
| Williamsburg, US | 10 |
| KMNlocation not on record | 10 |
| Madison, US | 10 |
| Toronto, CA | 10 |
| LfUlocation not on record | 9 |
| National Institute of Biological Resourceslocation not on record | 9 |
| Millersville, US | 9 |
| Ernst-Moritz-Arndt-Universitat Greifswaldlocation not on record | 9 |
| KR | 9 |
| Dover, US | 9 |
| Pullman, US | 9 |
| Tula State Lev Tolstoy Pedagogical Universitylocation not on record | 8 |
| Nagano City, JP | 8 |
| Knoxville, US | 8 |
| Zhengzhou, CN | 8 |
| GJOlocation not on record | 8 |
| Durban, ZA | 8 |
| Kew, GB | 8 |
| Staten Island, US | 7 |
| Denver, US | 7 |
| Morgantown, US | 7 |
| Tampa, US | 7 |
| NMBU:MINAlocation not on record | 7 |
| Strecker Museum, Baylor Universitylocation not on record | 7 |
| University of Alberta Museumslocation not on record | 7 |
| Northeast Institute of Geography and Agroecology, Chinese Academy of Scienceslocation not on record | 6 |
| Seoul, KR | 6 |
| Dekalb, US | 6 |
| Central China Normal Universitylocation not on record | 6 |
| Chengdu, CN | 6 |
| Logan, US | 6 |
| Wlocation not on record | 6 |
| Bronx, US | 6 |
| Forest Survey and Design Institute, Forestry Administrative Bureau of Daxinganlinglocation not on record | 6 |
| TROMlocation not on record | 6 |
| CZE061location not on record | 6 |
| CASlocation not on record | 6 |
| ENTClocation not on record | 6 |
| Davenport, US | 5 |
| Staatliches Museum fuer Naturkunde Karlsruhe (State Museum of Natural History)location not on record | 5 |
| Tokushima, JP | 5 |
| Natural History Museum Rotterdamlocation not on record | 5 |
| Zhejiang Museum of Natural Historylocation not on record | 5 |
| Philadelphia, US | 5 |
| Jyväskylä, FI | 5 |
| Mexico City, MX | 5 |
| Kyoto Universitylocation not on record | 5 |
| Berlin, DE | 5 |
| San Jose State University, Museum of Birds and Mammalslocation not on record | 5 |
| Fayetteville, US | 5 |
| Columbia, US | 5 |
| UGentlocation not on record | 5 |
| Chengdu, CN | 5 |
| Musee des Dinosaures d'Esperaza (Aude)location not on record | 5 |
| Moscow, US | 5 |
| Corvallis, US | 5 |
| 黔东南州民族医药研究所标本室location not on record | 5 |
| Zürich, CH | 5 |
| Herbarium of the Department of Botany, University of Tokyolocation not on record | 4 |
| FJFClocation not on record | 4 |
| Keene State Universitylocation not on record | 4 |
| University of Guelph, OAC Herbariumlocation not on record | 4 |
| 云南省思茅市民族传统医药研究所location not on record | 4 |
| Changsha, CN | 4 |
| Northeastern Forestry Universitylocation not on record | 4 |
| Frankfurt am Main | 4 |
| Xiamen, CN | 4 |
| Taipei, TW | 4 |
| GMBAlocation not on record | 4 |
| Yunnan Universitylocation not on record | 4 |
| Allentown, US | 4 |
| Xining, CN | 4 |
| Flagstaff, US | 4 |
| WTUlocation not on record | 4 |
| Philadelphia, US | 4 |
| PrivatHerblocation not on record | 4 |
| Tilburg, NL | 3 |
| FLADlocation not on record | 3 |
| Institut und Museum fuer Geologie und Palaeontologielocation not on record | 3 |
| Mount Pleasant, US | 3 |
| Ischia Marine Centrelocation not on record | 3 |
| Ann Arbor, US | 3 |
| KURAlocation not on record | 3 |
| Xinxiang, CN | 3 |
| Boise, US | 3 |
| Paris, FR | 3 |
| SIHUlocation not on record | 3 |
| Auckland, NZ | 3 |
| Metsähallituslocation not on record | 3 |
| Hangzhou, CN | 3 |
| Servico de Microbiologia e Imunologialocation not on record | 3 |
| Cambridge, US | 3 |
| Whitewater, US | 3 |
| Lincoln, US | 3 |
| Porvoo, FI | 3 |
| Tianjin Natural History Museumlocation not on record | 3 |
| Frauenfeld, CH | 3 |
| Nagatoro-machi, Chichibu-gun, JP | 3 |
| Taipei, TW | 3 |
| Russellville, US | 3 |
| St. Paul, US | 3 |
| Bourges, FR | 2 |
| Osaka, JP | 2 |
| Cambridge, US | 2 |
| Conway, US | 2 |
| Nishihara, JP | 2 |
| Naturalis Biodiversity Centerlocation not on record | 2 |
| Finnish Museum of Natural History, Botanical Museumlocation not on record | 2 |
| Sendai, JP | 2 |
| Uniwersytet Śląski w Katowicachlocation not on record | 2 |
| Karlsruhe, DE | 2 |
| Fairfax, US | 2 |
| Beijing, CN | 2 |
| Norfolk, US | 2 |
| BIO-UNIPIlocation not on record | 2 |
| Ishikawa Museum of Natural Historylocation not on record | 2 |
| Namur, BE | 2 |
| Xinjiang Institute of Ecology and Geography, Chinese Academy of Scienceslocation not on record | 2 |
| No collectionlocation not on record | 2 |
| Toyama, JP | 2 |
| Tuscaloosa, US | 2 |
| Jackson, US | 2 |
| University of Winnipeglocation not on record | 2 |
| Pretoria, ZA | 2 |
| University of Wisconsinlocation not on record | 2 |
| Miami, US | 2 |
| Durham, US | 2 |
| Hokkaido University Museumlocation not on record | 2 |
| Nagasaki University - Fisherieslocation not on record | 2 |
| James F. Matthews Center for Biodiversity Studieslocation not on record | 2 |
| CJBGlocation not on record | 2 |
| Chengdu, CN | 2 |
| Uniwersytet Rolniczy im. Hugona Kołłątaja w Krakowielocation not on record | 2 |
| Institute for Agricultural Bacteriology and Fermentation Biologylocation not on record | 2 |
| Edinburgh, GB | 2 |
| University of Southern Mississippilocation not on record | 2 |
| Mississippi State, US | 2 |
| Elikins, US | 2 |
| GAlocation not on record | 2 |
| JP | 2 |
| Lord Fairfax Community Collegelocation not on record | 2 |
| DBF-NHMDlocation not on record | 2 |
| GZUlocation not on record | 1 |
| Hudson, US | 1 |
| Edmonton, CA | 1 |
| PRClocation not on record | 1 |
| New Brunswick, US | 1 |
| Iwate Prefectural Museumlocation not on record | 1 |
| Fulda, DE | 1 |
| Palacký University in Olomouclocation not on record | 1 |
| Jinghong, CN | 1 |
| Riverside, US | 1 |
| Ivano-Frankove, UA | 1 |
| ASUlocation not on record | 1 |
| ifplocation not on record | 1 |
| Cape Town, ZA | 1 |
| San Angelo, US | 1 |
| The State Museum-Preserve "The Kulikovo pole"location not on record | 1 |
| Stockholm, SE | 1 |
| The Tula Region State Institution of Culture "Tula Museum Association"location not on record | 1 |
| Austin, US | 1 |
| Göteborg, SE | 1 |
| Cincinnati, US | 1 |
| Emporia, US | 1 |
| Cheney, US | 1 |
| SZUlocation not on record | 1 |
| Davis, US | 1 |
| Chapel Hill, US | 1 |
| Canadian Department of Agriculturelocation not on record | 1 |
| US | 1 |
| DOI/NPS, Little Rock Central High School National Historic Sitelocation not on record | 1 |
| Natural History Museum, Tribhuvan Universitylocation not on record | 1 |
| MAlocation not on record | 1 |
| Centre for Medicinal Plants Research-Arya Vaidya Salalocation not on record | 1 |
| H-Schuhwlocation not on record | 1 |
| EL PASO, US | 1 |
| Ypsilanti, US | 1 |
| Omachi Alpine Museumlocation not on record | 1 |
| Brussel, BE | 1 |
| Instytut Ochrony Przyrody Polskiej Akademii Nauklocation not on record | 1 |
| BSBIlocation not on record | 1 |
| NTNU University Museum, Department of Natural Historylocation not on record | 1 |
| Tromso University Museumlocation not on record | 1 |
| H-Adlerlocation not on record | 1 |
| Tampere, FI | 1 |
| NMWlocation not on record | 1 |
| Royal Botanic Gardens, Kewlocation not on record | 1 |
| AUAlocation not on record | 1 |
| GB | 1 |
| Nijmegen, NL | 1 |
| Barcelona, ES | 1 |
| Sede di Via Giorgio La Pira del Museo di Storia naturale di Firenze | Via Giorgio La Pira headquarter of the Natural History Museum in Florencelocation not on record | 1 |
| DOI/NPS, Mississippi National River & Recreation Arealocation not on record | 1 |
| Central Botanical Gardenlocation not on record | 1 |
| Turlock, US | 1 |
| Otaru, JP | 1 |
| Plocation not on record | 1 |
| Royal Botanic Garden Edinburghlocation not on record | 1 |
| Cambridge, US | 1 |
| Central China Agricultural Universitylocation not on record | 1 |
| Fredericton Stock Culture Collectionlocation not on record | 1 |
| DOI/NPS, Greenbelt Parklocation not on record | 1 |
| WINlocation not on record | 1 |
| Department of Plant Resources, National Herbarium and Plant Laboratorieslocation not on record | 1 |
| Jefferson City, US | 1 |
| Kirksville, US | 1 |
| Guangzhou, CN | 1 |
| San Luis Obispo, US | 1 |
| Pondicherry, IN | 1 |
| Hazara Universitylocation not on record | 1 |
| US | 1 |
| Awka, NG | 1 |
| Lanzhou Institute of Desert Research, Academia Sinicalocation not on record | 1 |
| BClocation not on record | 1 |
| Fujian Institute of Subtropical Botanylocation not on record | 1 |
| Forssa, FI | 1 |
291 institutions · 5 302 of 5 852 vouchered records shown · 469 without an institution code
Cultivated / Captivenot free-living
A living individual in a botanical garden, zoo or nursery — cultivated or kept, not free-living.
09Environmental DNA164 detections
Where the DNA of Acorus calamus 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 found164
Studies independent surveys1
Countries10
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 164 detections have coordinates
Open the map10 countries0
lakeshoreShallow Calamagrostis-Carex marsh over marblecanal bankcanal
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 median10.0 °C 10.0–17.8
Seasonal swing summer↔winter31.5 °C
Max temp (day)15.7 °C 15.7–21.8
Min temp (night)3.10 °C 3.10–14.1
Precipitation13.8 mm/mo 13.8–82.0
Air humidity45.7 % 45.7–60.6
Moisture balance-95.2 mm/mo -95.2–-28.0
Vapour deficit827 Pa 691–830
Wind speed4.50 m/s 2.40–5.80
Cloud cover24.1 % 24.1–44.1
CHELSA 1981–2010, ~9 km grid, at location & month of 50 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.