{ "$schema": "https://botanai.app/schema/species-v1.json", "schema_version": 1, "url": "https://botanai.app/plants/acorus-calamus/", "last_modified": "2025-12-15", "id": { "slug": "acorus-calamus", "wfo": "wfo-0000350733", "inat_taxon_id": 82306 }, "name": { "scientific": "Acorus calamus", "authorship": "L.", "genus": "Acorus", "epithet": "calamus", "family": "Acoraceae", "rank": "species", "taxonomic_status": "accepted", "accepted_according_to": "World Flora Online Plant List, 2026-06", "is_homonym": false, "published_in": "Sp. Pl. : 324 (1753)", "protologue_url": "https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:84009-1", "common": { "preferred": "Sweet Flag", "english": [ "Sweet Flag", "Sweetflag", "beewort", "calamus", "calamus root", "calamus-root", "flag root", "muskrat root", "pine root", "rat root", "sweet calomel", "sweet cane", "sweet flag", "sweet myrtle", "sweet rush", "sweet sedge", "sweet-flag" ], "source": "wikidata" }, "synonyms": [ { "name": "Acorus americanus", "authorship": "(Raf.) Raf." }, { "name": "Acorus angustatus", "authorship": "Raf." }, { "name": "Acorus angustifolius", "authorship": "Schott" }, { "name": "Acorus aromaticus", "authorship": "Gilib." }, { "name": "Acorus asiaticus", "authorship": "Nakai" }, { "name": "Acorus belangeri", "authorship": "Schott" }, { "name": "Acorus calamus f. submersa", "authorship": "Glück" }, { "name": "Acorus calamus subsp. vulgaris", "authorship": "(L.) Ehrh." }, { "name": "Acorus calamus var. angustifolius", "authorship": "(Schott) Engl." }, { "name": "Acorus calamus var. belangeri", "authorship": "(Schott) Engl." }, { "name": "Acorus calamus var. europeus", "authorship": "Raf." }, { "name": "Acorus calamus var. spurius", "authorship": "(Schott) Engl." }, { "name": "Acorus calamus var. verus", "authorship": "L." }, { "name": "Acorus calamus var. vulgaris", "authorship": "L." }, { "name": "Acorus calamus-aromaticus", "authorship": "Clairv." }, { "name": "Acorus casia", "authorship": "Bertol." }, { "name": "Acorus cochinchinensis", "authorship": "(Lour.) Schott" }, { "name": "Acorus commersonii", "authorship": "Schott" }, { "name": "Acorus commutatus", "authorship": "Schott" }, { "name": "Acorus elatus", "authorship": "Salisb." }, { "name": "Acorus europaeus", "authorship": "Dumort." }, { "name": "Acorus flexuosus", "authorship": "Raf." }, { "name": "Acorus floridanus", "authorship": "Raf." }, { "name": "Acorus gramineus var. crassispadix", "authorship": "Lingelsh." }, { "name": "Acorus griffithii", "authorship": "Schott" }, { "name": "Acorus latifolius", "authorship": "Z.Y.Zhu" }, { "name": "Acorus nilaghirensis", "authorship": "Schott" }, { "name": "Acorus odoratus", "authorship": "Lam." }, { "name": "Acorus rumphianus", "authorship": "S.Y.Hu" }, { "name": "Acorus spurius", "authorship": "Schott" }, { "name": "Acorus tatarinowii", "authorship": "Schott" }, { "name": "Acorus terrestris", "authorship": "Rumph. ex Schott" }, { "name": "Acorus terrestris", "authorship": "Spreng." }, { "name": "Acorus triqueter", "authorship": "Turcz. ex Schott" }, { "name": "Acorus undulatus", "authorship": "Stokes" }, { "name": "Acorus verus", "authorship": "Garsault" }, { "name": "Acorus verus", "authorship": "(L.) Raf." }, { "name": "Calamus aromaticus", "authorship": "Garsault" }, { "name": "Orontium cochinchinense", "authorship": "Lour." } ], "wikipedia": "https://en.wikipedia.org/wiki/Acorus_calamus" }, "photographs": { "shown": 8, "usable_found": 181, "licences": [ "CC0", "CC-BY", "CC-BY-SA" ], "noncommercial_excluded": true, "items": [ { "photo_id": 155071139, "license": "CC-BY", "license_name": "CC BY 4.0", "license_url": "https://creativecommons.org/licenses/by/4.0/", "derivatives_restricted": false, "creator": "Alexander Dubynin", "creator_url": "https://www.inaturalist.org/people/alexanderdubynin", "source_url": "https://www.inaturalist.org/observations/20708b8d-2874-4cd6-8aac-347dd2b87a2d", "observed_on": "2021-08-11", "lat": 54.124, "lon": 81.611, "original": { "width": 1024, "height": 681 }, "widths": [ 400, 800 ], "urls": { "avif": { "400": "https://img.botanai.app/p/155071139/r1/400.avif", "800": "https://img.botanai.app/p/155071139/r1/800.avif" }, "jpeg": { "400": 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"Nova Scotia", "continent": "NORTHERN AMERICA", "region": "Eastern Canada" }, { "code": "NUN", "name": "Nunavut", "continent": "NORTHERN AMERICA", "region": "Subarctic America" }, { "code": "OHI", "name": "Ohio", "continent": "NORTHERN AMERICA", "region": "Northeastern U.S.A." }, { "code": "ONT", "name": "Ontario", "continent": "NORTHERN AMERICA", "region": "Eastern Canada" }, { "code": "PEN", "name": "Pennsylvania", "continent": "NORTHERN AMERICA", "region": "Northeastern U.S.A." }, { "code": "PEI", "name": "Prince Edward I.", "continent": "NORTHERN AMERICA", "region": "Eastern Canada" }, { "code": "QUE", "name": "Québec", "continent": "NORTHERN AMERICA", "region": "Eastern Canada" }, { "code": "SAS", "name": "Saskatchewan", "continent": "NORTHERN AMERICA", "region": "Western Canada" }, { "code": "SDA", "name": "South Dakota", "continent": "NORTHERN AMERICA", "region": "North-Central U.S.A." }, { "code": "VER", "name": "Vermont", "continent": "NORTHERN AMERICA", "region": "Northeastern U.S.A." }, { "code": "WAS", "name": "Washington", "continent": "NORTHERN AMERICA", "region": "Northwestern U.S.A." }, { "code": "WIS", "name": "Wisconsin", "continent": "NORTHERN AMERICA", "region": "North-Central U.S.A." }, { "code": "YUK", "name": "Yukon", "continent": "NORTHERN AMERICA", "region": "Subarctic America" } ] }, "phenology": { "n": 66, "n_annotated": 171, "sufficient": true, "by_month": [ 0, 0, 0, 2, 10, 31, 13, 9, 1, 0, 0, 0 ], "annotated_by_month": [ 0, 0, 1, 3, 17, 50, 46, 37, 12, 4, 1, 0 ], "share": [ null, null, null, null, 0.5882, 0.62, 0.2826, 0.2432, 0.0833, null, null, null ], "ci": [ null, null, null, null, [ 0.3601, 0.7839 ], [ 0.4815, 0.7414 ], [ 0.1732, 0.4255 ], [ 0.1336, 0.4012 ], [ 0.0149, 0.3539 ], null, null, null ], "peak_month": 6, "peak_basis": "share", "min_month_n": 5, "fruiting": { "n": 89, "by_month": [ 0, 0, 1, 1, 0, 14, 34, 25, 10, 4, 0, 0 ], "share": [ null, null, null, null, 0, 0.28, 0.7391, 0.6757, 0.8333, null, null, null ], "ci": [ null, null, null, null, [ 0, 0.1843 ], [ 0.1747, 0.4167 ], [ 0.5974, 0.844 ], [ 0.5146, 0.8037 ], [ 0.552, 0.953 ], null, null, null ], "peak_month": 9 }, "doi": "10.15468/dl.cgje2x", "source": "GBIF SQL download of iNaturalist Research-grade Observations", "quality_grade": "research (guaranteed upstream by iNaturalist at export)", "fields": { "by_month": "observations found IN FLOWER, by month (Jan..Dec)", "annotated_by_month": "observations in which a human recorded the reproductive state at all, by month. This is the denominator, and it includes the records that said \"no flowers or fruits\".", "share": "by_month / annotated_by_month. null where too few plants were examined to state a proportion.", "ci": "95% Wilson score interval on share.", "peak_month": "the month with the highest SHARE, not the highest count." } }, "traits": { "lifeform": "rhizomatous geophyte or helophyte", "climate": "temperate" }, "climate_envelope": { "mean_annual_temp_c": { "p5": 3, "median": 7.9, "p95": 13.7 }, "temp_seasonality": { "p5": 466.7, "median": 862, "p95": 1291 }, "max_temp_warmest_month_c": { "p5": 20.3, "median": 23.3, "p95": 30 }, "min_temp_coldest_month_c": { "p5": -19, "median": -6.5, "p95": 1.6 }, "annual_precip_mm": { "p5": 452.3, "median": 683.6, "p95": 1255 }, "precip_seasonality": { "p5": 11.9, "median": 28.6, "p95": 41.7 }, "precip_driest_quarter_mm": { "p5": 53.6, "median": 116.3, "p95": 259 }, "n": 1704, "units": { "mean_annual_temp_c": "degrees Celsius", "min_temp_coldest_month_c": "degrees Celsius (mean daily MINIMUM of the coldest month)", "max_temp_warmest_month_c": "degrees Celsius (mean daily MAXIMUM of the warmest month)", "annual_precip_mm": "millimetres per year", "precip_driest_quarter_mm": "millimetres in the driest quarter" }, "source": "CHELSA V2.1 climatologies 1981-2010, 30 arcsec", "citation": "Karger, D.N. et al. (2017) Climatologies at high resolution for the earth's land surface areas. Scientific Data 4, 170122.", "occurrences": "iNaturalist Research-grade Observations", "occurrences_doi": "10.15468/dl.cgje2x", "method": "Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 1704 of them. Species with fewer than 30 georeferenced observations get no envelope.", "is_hardiness_zone": false, "hardiness_zone_note": "min_temp_coldest_month_c is NOT a USDA hardiness zone. A USDA zone is the average annual EXTREME minimum temperature; this is the mean daily minimum of the coldest month, which is typically about 16 C warmer. Do not present one as the other." }, "identification": { "on_device_model": { "model": "Google AIY plants V1 (TFLite, 2,102 classes)", "identifies_this_species": false }, "in_accuracy_benchmark": false, "benchmark_url": "https://botanai.app/accuracy/", "confused_with": [] }, "sources": [ { "name": "World Flora Online Plant List", "note": "accepted name, authority, classification", "license": "CC0", "url": "https://www.worldfloraonline.org/", "retrieved": "2026-07-12" }, { "name": "iNaturalist", "note": "photographs and flowering annotations, CC0 / CC BY / CC BY-SA only", "license": "per photograph", "url": "https://www.inaturalist.org/", "retrieved": "2026-06-27" }, { "name": "Wikidata", "note": "common name (P1843), joined on the World Flora Online identifier (P7715)", "license": "CC0", "url": "https://www.wikidata.org/", "retrieved": "2026-07-13" }, { "name": "Kew, World Checklist of Vascular Plants (WCVP v16)", "note": "native distribution by TDWG level-3 botanical country, and life form", "license": "CC BY 3.0", "url": "https://doi.org/10.15468/6h8ucr", "retrieved": "2026-06-04" } ], "gaps": [ { "field": "care", "status": "not_published", "reason": "Not published anywhere on this site. Every care claim we could make cheaply would be an unsourced enum, which is what the previous version of this site did and why it was deleted." }, { "field": "toxicity", "status": "not_published", "reason": "Not published. The widely copied list is a copyrighted compilation restricted to noncommercial use, and we will not scrape it. A sourced toxicity dataset is being built from primary literature and is not ready." }, { "field": "botanical_review", "status": "not_sourced", "reason": "No page on this site has been reviewed by a named botanist. The determination label says so, on every page." }, { "field": "hardiness_zone", "status": "not_published", "reason": "Not published for any species. A USDA hardiness zone is the average annual EXTREME minimum temperature, and we hold the mean daily minimum of the coldest month, which is a different quantity and typically about 16 C warmer. Presenting one as the other would place a plant several zones too warm, so we do not publish a zone at all." } ], "license": { "data": "CC BY 4.0", "attribution": "BotanAI, https://botanai.app/plants/acorus-calamus/", "note": "This document is licensed CC BY 4.0. The PHOTOGRAPHS it links are licensed individually and separately: each carries its own license and license_url, and those terms govern. Underlying taxonomy is CC0 (World Flora Online); native range is CC BY 3.0 (Kew)." } }