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  "url": "https://botanai.app/plants/cyperus-flavidus/",
  "last_modified": "2025-12-15",
  "id": {
    "slug": "cyperus-flavidus",
    "wfo": "wfo-0000373599",
    "inat_taxon_id": 716973
  },
  "name": {
    "scientific": "Cyperus flavidus",
    "authorship": "Retz.",
    "genus": "Cyperus",
    "epithet": "flavidus",
    "family": "Cyperaceae",
    "rank": "species",
    "taxonomic_status": "accepted",
    "accepted_according_to": "World Flora Online Plant List, 2026-06",
    "is_homonym": false,
    "published_in": "Observ. Bot. 5: 13 (1788)",
    "protologue_url": "https://www.cyperaceae.org/aphia.php?p=taxdetails&id=1680798",
    "common": {
      "preferred": "yellow flatsedge",
      "english": [
        "yellow flatsedge"
      ],
      "source": "usda"
    },
    "synonyms": [
      {
        "name": "Chlorocyperus globosus",
        "authorship": "(Rchb.) Palla"
      },
      {
        "name": "Chlorocyperus nilagiricus",
        "authorship": "(Hochst. ex Steud.) Rikli"
      },
      {
        "name": "Cyperus ater",
        "authorship": "Dalzell & A.Gibson"
      },
      {
        "name": "Cyperus atroferrugineus",
        "authorship": "Steud."
      },
      {
        "name": "Cyperus capillaris",
        "authorship": "J.Koenig ex Roxb."
      },
      {
        "name": "Cyperus complanatus",
        "authorship": "C.Presl"
      },
      {
        "name": "Cyperus confertus",
        "authorship": "Lam."
      },
      {
        "name": "Cyperus curvatus",
        "authorship": "Vahl"
      },
      {
        "name": "Cyperus divaricatus",
        "authorship": "Lam."
      },
      {
        "name": "Cyperus fascicularis",
        "authorship": "DC."
      },
      {
        "name": "Cyperus flavidus var. erectus",
        "authorship": "(C.B.Clarke) Korlah."
      },
      {
        "name": "Cyperus flavidus var. khasianus",
        "authorship": "(C.B.Clarke) Korlah."
      },
      {
        "name": "Cyperus flavidus var. nilagiricus",
        "authorship": "(Hochst. ex Steud.) Korlah."
      },
      {
        "name": "Cyperus flavidus var. strictus",
        "authorship": "(C.B.Clarke) Korlah."
      },
      {
        "name": "Cyperus fuscoater",
        "authorship": "Meinsh. ex Korsh."
      },
      {
        "name": "Cyperus globosus",
        "authorship": "All."
      },
      {
        "name": "Cyperus globosus f. brevifolius",
        "authorship": "Marcet"
      },
      {
        "name": "Cyperus globosus f. cinnamomeus",
        "authorship": "C.B.Clarke"
      },
      {
        "name": "Cyperus globosus f. depauperatus",
        "authorship": "Kük."
      },
      {
        "name": "Cyperus globosus f. fuscoater",
        "authorship": "(Meinsh. ex Korsh.) Kük."
      },
      {
        "name": "Cyperus globosus f. khasianus",
        "authorship": "C.B.Clarke"
      },
      {
        "name": "Cyperus globosus f. minimus",
        "authorship": "Kük."
      },
      {
        "name": "Cyperus globosus f. pauperior",
        "authorship": "(Boeckeler) Kük."
      },
      {
        "name": "Cyperus globosus f. tortuosus",
        "authorship": "(J.Koenig ex Roxb.) C.B.Clarke"
      },
      {
        "name": "Cyperus globosus prol. bubanii",
        "authorship": "(Debeaux) Rouy"
      },
      {
        "name": "Cyperus globosus subsp. cymosus",
        "authorship": "(Willk.) K.Richt."
      },
      {
        "name": "Cyperus globosus subsp. humifusus",
        "authorship": "(Clemente) K.Richt."
      },
      {
        "name": "Cyperus globosus var. bubanii",
        "authorship": "Debeaux"
      },
      {
        "name": "Cyperus globosus var. cymosus",
        "authorship": "Willk."
      },
      {
        "name": "Cyperus globosus var. erectus",
        "authorship": "(C.B.Clarke) Kük."
      },
      {
        "name": "Cyperus globosus var. genuinus",
        "authorship": "Willk."
      },
      {
        "name": "Cyperus globosus var. humifusus",
        "authorship": "(Clemente) Roem. & Schult."
      },
      {
        "name": "Cyperus globosus var. khasianus",
        "authorship": "(C.B.Clarke) Kük."
      },
      {
        "name": "Cyperus globosus var. nilagiricus",
        "authorship": "(Hochst. ex Steud.) C.B.Clarke"
      },
      {
        "name": "Cyperus globosus var. strictus",
        "authorship": "C.B.Clarke"
      },
      {
        "name": "Cyperus globosus var. submonocephalus",
        "authorship": "Boeckeler"
      },
      {
        "name": "Cyperus globosus var. tortuosa",
        "authorship": "(J.Koenig ex Roxb.) C.B.Clarke"
      },
      {
        "name": "Cyperus horizontalis",
        "authorship": "Willd. ex Kunth"
      },
      {
        "name": "Cyperus humifusus",
        "authorship": "Clemente"
      },
      {
        "name": "Cyperus jungendus",
        "authorship": "Steud."
      },
      {
        "name": "Cyperus junghuhnii",
        "authorship": "Miq."
      },
      {
        "name": "Cyperus lamarckianus",
        "authorship": "Schult."
      },
      {
        "name": "Cyperus linnaeanus",
        "authorship": "Kunth"
      },
      {
        "name": "Cyperus mucronatus",
        "authorship": "Steud."
      },
      {
        "name": "Cyperus nilagiricus",
        "authorship": "Hochst. ex Steud."
      },
      {
        "name": "Cyperus nilagiricus var. pauperior",
        "authorship": "Boeckeler"
      },
      {
        "name": "Cyperus semiteres",
        "authorship": "B.Heyne ex C.B.Clarke"
      },
      {
        "name": "Cyperus strictus",
        "authorship": "Lam."
      },
      {
        "name": "Cyperus strictus",
        "authorship": "Roxb."
      },
      {
        "name": "Cyperus tortuosus",
        "authorship": "J.Koenig ex Roxb."
      },
      {
        "name": "Cyperus trachyrhachis",
        "authorship": "Steud."
      },
      {
        "name": "Cyperus vulgaris",
        "authorship": "Sieber ex Kunth"
      },
      {
        "name": "Pycreus capillaris",
        "authorship": "(J.Koenig ex Roxb.) Nees ex C.B.Clarke"
      },
      {
        "name": "Pycreus capillaris var. nilagiricus",
        "authorship": "(Hochst. ex Steud.) C.B.Clarke"
      },
      {
        "name": "Pycreus capillaris var. strictus",
        "authorship": "(C.B.Clarke) C.B.Clarke"
      },
      {
        "name": "Pycreus flavidus",
        "authorship": "(Retz.) T.Koyama"
      },
      {
        "name": "Pycreus flavidus var. erectus",
        "authorship": "(C.B.Clarke) Karthik."
      },
      {
        "name": "Pycreus flavidus var. khasianus",
        "authorship": "(C.B.Clarke) Karthik."
      },
      {
        "name": "Pycreus flavidus var. minimus",
        "authorship": "(Kük.) L.K.Dai"
      },
      {
        "name": "Pycreus flavidus var. nilagiricus",
        "authorship": "(Hochst. ex Steud.) Karthik."
      },
      {
        "name": "Pycreus flavidus var. strictus",
        "authorship": "(C.B.Clarke) Karthik."
      },
      {
        "name": "Pycreus globosus",
        "authorship": "Rchb."
      },
      {
        "name": "Pycreus globosus var. erectus",
        "authorship": "C.B.Clarke"
      },
      {
        "name": "Pycreus globosus var. minimus",
        "authorship": "(Kük.) Tang & F.T.Wang"
      },
      {
        "name": "Pycreus globosus var. nilagiricus",
        "authorship": "(Hochst. ex Steud.) C.B.Clarke"
      },
      {
        "name": "Pycreus globosus var. strictus",
        "authorship": "(C.B.Clarke) C.B.Clarke"
      },
      {
        "name": "Pycreus globosus var. typicus",
        "authorship": "Domin"
      },
      {
        "name": "Pycreus lamarckianus",
        "authorship": "(Schult.) M.R.Almeida"
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      {
        "name": "Pycreus lamarckianus var. strictus",
        "authorship": "(Lam.) M.R.Almeida"
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      {
        "name": "Pycreus nilagiricus",
        "authorship": "(Hochst. ex Steud.) E.G.Camus"
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      {
        "name": "Pycreus nilagiricus",
        "authorship": "(Hochst. ex Steud.) Schischk."
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      {
        "name": "Pycreus reductus",
        "authorship": "Cherm."
      },
      {
        "name": "Pycreus strictus",
        "authorship": "(C.B.Clarke) Alston"
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        "region": "Russian Far East"
      },
      {
        "code": "CHN",
        "name": "China North-Central",
        "continent": "ASIA-TEMPERATE",
        "region": "China"
      },
      {
        "code": "CHC",
        "name": "China South-Central",
        "continent": "ASIA-TEMPERATE",
        "region": "China"
      },
      {
        "code": "CHS",
        "name": "China Southeast",
        "continent": "ASIA-TEMPERATE",
        "region": "China"
      },
      {
        "code": "EAI",
        "name": "East Aegean Is.",
        "continent": "ASIA-TEMPERATE",
        "region": "Western Asia"
      },
      {
        "code": "CHH",
        "name": "Hainan",
        "continent": "ASIA-TEMPERATE",
        "region": "China"
      },
      {
        "code": "CHI",
        "name": "Inner Mongolia",
        "continent": "ASIA-TEMPERATE",
        "region": "China"
      },
      {
        "code": "IRN",
        "name": "Iran",
        "continent": "ASIA-TEMPERATE",
        "region": "Western Asia"
      },
      {
        "code": "IRQ",
        "name": "Iraq",
        "continent": "ASIA-TEMPERATE",
        "region": "Western Asia"
      },
      {
        "code": "JAP",
        "name": "Japan",
        "continent": "ASIA-TEMPERATE",
        "region": "Eastern Asia"
      },
      {
        "code": "KAZ",
        "name": "Kazakhstan",
        "continent": "ASIA-TEMPERATE",
        "region": "Central Asia"
      },
      {
        "code": "KZN",
        "name": "Kazan-retto",
        "continent": "ASIA-TEMPERATE",
        "region": "Eastern Asia"
      },
      {
        "code": "KGZ",
        "name": "Kirgizstan",
        "continent": "ASIA-TEMPERATE",
        "region": "Central Asia"
      },
      {
        "code": "KOR",
        "name": "Korea",
        "continent": "ASIA-TEMPERATE",
        "region": "Eastern Asia"
      },
      {
        "code": "LBS",
        "name": "Lebanon-Syria",
        "continent": "ASIA-TEMPERATE",
        "region": "Western Asia"
      },
      {
        "code": "CHM",
        "name": "Manchuria",
        "continent": "ASIA-TEMPERATE",
        "region": "China"
      },
      {
        "code": "NNS",
        "name": "Nansei-shoto",
        "continent": "ASIA-TEMPERATE",
        "region": "Eastern Asia"
      },
      {
        "code": "NCS",
        "name": "North Caucasus",
        "continent": "ASIA-TEMPERATE",
        "region": "Caucasus"
      },
      {
        "code": "OGA",
        "name": "Ogasawara-shoto",
        "continent": "ASIA-TEMPERATE",
        "region": "Eastern Asia"
      },
      {
        "code": "PAL",
        "name": "Palestine",
        "continent": "ASIA-TEMPERATE",
        "region": "Western Asia"
      },
      {
        "code": "PRM",
        "name": "Primorye",
        "continent": "ASIA-TEMPERATE",
        "region": "Russian Far East"
      },
      {
        "code": "CHQ",
        "name": "Qinghai",
        "continent": "ASIA-TEMPERATE",
        "region": "China"
      },
      {
        "code": "TZK",
        "name": "Tadzhikistan",
        "continent": "ASIA-TEMPERATE",
        "region": "Central Asia"
      },
      {
        "code": "TAI",
        "name": "Taiwan",
        "continent": "ASIA-TEMPERATE",
        "region": "Eastern Asia"
      },
      {
        "code": "CHT",
        "name": "Tibet",
        "continent": "ASIA-TEMPERATE",
        "region": "China"
      },
      {
        "code": "TCS",
        "name": "Transcaucasus",
        "continent": "ASIA-TEMPERATE",
        "region": "Caucasus"
      },
      {
        "code": "TKM",
        "name": "Turkmenistan",
        "continent": "ASIA-TEMPERATE",
        "region": "Central Asia"
      },
      {
        "code": "TUR",
        "name": "Türkiye",
        "continent": "ASIA-TEMPERATE",
        "region": "Western Asia"
      },
      {
        "code": "UZB",
        "name": "Uzbekistan",
        "continent": "ASIA-TEMPERATE",
        "region": "Central Asia"
      },
      {
        "code": "CHX",
        "name": "Xinjiang",
        "continent": "ASIA-TEMPERATE",
        "region": "China"
      },
      {
        "code": "ASS",
        "name": "Assam",
        "continent": "ASIA-TROPICAL",
        "region": "Indian Subcontinent"
      },
      {
        "code": "BAN",
        "name": "Bangladesh",
        "continent": "ASIA-TROPICAL",
        "region": "Indian Subcontinent"
      },
      {
        "code": "BOR",
        "name": "Borneo",
        "continent": "ASIA-TROPICAL",
        "region": "Malesia"
      },
      {
        "code": "CBD",
        "name": "Cambodia",
        "continent": "ASIA-TROPICAL",
        "region": "Indo-China"
      },
      {
        "code": "EHM",
        "name": "East Himalaya",
        "continent": "ASIA-TROPICAL",
        "region": "Indian Subcontinent"
      },
      {
        "code": "IND",
        "name": "India",
        "continent": "ASIA-TROPICAL",
        "region": "Indian Subcontinent"
      },
      {
        "code": "JAW",
        "name": "Jawa",
        "continent": "ASIA-TROPICAL",
        "region": "Malesia"
      },
      {
        "code": "LAO",
        "name": "Laos",
        "continent": "ASIA-TROPICAL",
        "region": "Indo-China"
      },
      {
        "code": "LSI",
        "name": "Lesser Sunda Is.",
        "continent": "ASIA-TROPICAL",
        "region": "Malesia"
      },
      {
        "code": "MLY",
        "name": "Malaya",
        "continent": "ASIA-TROPICAL",
        "region": "Malesia"
      },
      {
        "code": "MOL",
        "name": "Maluku",
        "continent": "ASIA-TROPICAL",
        "region": "Malesia"
      },
      {
        "code": "MYA",
        "name": "Myanmar",
        "continent": "ASIA-TROPICAL",
        "region": "Indo-China"
      },
      {
        "code": "NEP",
        "name": "Nepal",
        "continent": "ASIA-TROPICAL",
        "region": "Indian Subcontinent"
      },
      {
        "code": "NWG",
        "name": "New Guinea",
        "continent": "ASIA-TROPICAL",
        "region": "Papuasia"
      },
      {
        "code": "PAK",
        "name": "Pakistan",
        "continent": "ASIA-TROPICAL",
        "region": "Indian Subcontinent"
      },
      {
        "code": "PHI",
        "name": "Philippines",
        "continent": "ASIA-TROPICAL",
        "region": "Malesia"
      },
      {
        "code": "SRL",
        "name": "Sri Lanka",
        "continent": "ASIA-TROPICAL",
        "region": "Indian Subcontinent"
      },
      {
        "code": "SUL",
        "name": "Sulawesi",
        "continent": "ASIA-TROPICAL",
        "region": "Malesia"
      },
      {
        "code": "SUM",
        "name": "Sumatera",
        "continent": "ASIA-TROPICAL",
        "region": "Malesia"
      },
      {
        "code": "THA",
        "name": "Thailand",
        "continent": "ASIA-TROPICAL",
        "region": "Indo-China"
      },
      {
        "code": "VIE",
        "name": "Vietnam",
        "continent": "ASIA-TROPICAL",
        "region": "Indo-China"
      },
      {
        "code": "WHM",
        "name": "West Himalaya",
        "continent": "ASIA-TROPICAL",
        "region": "Indian Subcontinent"
      },
      {
        "code": "NSW",
        "name": "New South Wales",
        "continent": "AUSTRALASIA",
        "region": "Australia"
      },
      {
        "code": "QLD",
        "name": "Queensland",
        "continent": "AUSTRALASIA",
        "region": "Australia"
      },
      {
        "code": "VIC",
        "name": "Victoria",
        "continent": "AUSTRALASIA",
        "region": "Australia"
      },
      {
        "code": "BUL",
        "name": "Bulgaria",
        "continent": "EUROPE",
        "region": "Southeastern Europe"
      },
      {
        "code": "FRA",
        "name": "France",
        "continent": "EUROPE",
        "region": "Southwestern Europe"
      },
      {
        "code": "GRC",
        "name": "Greece",
        "continent": "EUROPE",
        "region": "Southeastern Europe"
      },
      {
        "code": "ITA",
        "name": "Italy",
        "continent": "EUROPE",
        "region": "Southeastern Europe"
      },
      {
        "code": "KRI",
        "name": "Kriti",
        "continent": "EUROPE",
        "region": "Southeastern Europe"
      },
      {
        "code": "SPA",
        "name": "Spain",
        "continent": "EUROPE",
        "region": "Southwestern Europe"
      }
    ]
  },
  "phenology": {
    "n": 33,
    "n_annotated": 37,
    "sufficient": true,
    "by_month": [
      0,
      0,
      1,
      7,
      11,
      6,
      2,
      1,
      2,
      3,
      0,
      0
    ],
    "annotated_by_month": [
      0,
      0,
      1,
      8,
      11,
      6,
      2,
      1,
      2,
      4,
      1,
      1
    ],
    "share": [
      null,
      null,
      null,
      0.875,
      1,
      1,
      null,
      null,
      null,
      null,
      null,
      null
    ],
    "ci": [
      null,
      null,
      null,
      [
        0.5291,
        0.9776
      ],
      [
        0.7412,
        1
      ],
      [
        0.6097,
        1
      ],
      null,
      null,
      null,
      null,
      null,
      null
    ],
    "peak_month": 5,
    "peak_basis": "share",
    "min_month_n": 5,
    "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": "annual or perennial",
    "climate": "subtropical"
  },
  "climate_envelope": {
    "mean_annual_temp_c": {
      "p5": 13.2,
      "median": 22.7,
      "p95": 24.7
    },
    "temp_seasonality": {
      "p5": 214,
      "median": 397.2,
      "p95": 868.6
    },
    "max_temp_warmest_month_c": {
      "p5": 24.2,
      "median": 29.7,
      "p95": 31.9
    },
    "min_temp_coldest_month_c": {
      "p5": -2.5,
      "median": 12.4,
      "p95": 19.4
    },
    "annual_precip_mm": {
      "p5": 614.6,
      "median": 2784.9,
      "p95": 4051.3
    },
    "precip_seasonality": {
      "p5": 34.4,
      "median": 62.9,
      "p95": 100
    },
    "precip_driest_quarter_mm": {
      "p5": 12.4,
      "median": 177,
      "p95": 543.4
    },
    "n": 122,
    "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 122 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": "USDA PLANTS Database",
      "note": "common name, checklist symbol CYFL11",
      "license": "public domain",
      "url": "https://plants.usda.gov/",
      "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/cyperus-flavidus/",
    "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)."
  }
}