{
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  "last_modified": "2025-12-15",
  "id": {
    "slug": "ceratophyllum-muricatum",
    "wfo": "wfo-0000832128",
    "inat_taxon_id": 160355
  },
  "name": {
    "scientific": "Ceratophyllum muricatum",
    "authorship": "Cham.",
    "genus": "Ceratophyllum",
    "epithet": "muricatum",
    "family": "Ceratophyllaceae",
    "rank": "species",
    "taxonomic_status": "accepted",
    "accepted_according_to": "World Flora Online Plant List, 2026-06",
    "is_homonym": false,
    "published_in": "Linnaea 4: 504 (1829)",
    "protologue_url": "https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:163079-1",
    "common": {
      "preferred": "Prickly Hornwort",
      "english": [
        "Prickly Hornwort",
        "prickly hornwort"
      ],
      "source": "wikidata"
    },
    "synonyms": [
      {
        "name": "Ceratophyllum cristatum",
        "authorship": "Guill. & Perr."
      },
      {
        "name": "Ceratophyllum demersum subsp. muricatum",
        "authorship": "(Cham.) Wilmot-Dear"
      },
      {
        "name": "Ceratophyllum demersum var. muricatum",
        "authorship": "(Cham.) K.Schum."
      },
      {
        "name": "Ceratophyllum demersum var. oxycarpum",
        "authorship": "Kuntze"
      },
      {
        "name": "Ceratophyllum inflatum",
        "authorship": "C.C.Jao ex K.C.Kuan"
      },
      {
        "name": "Ceratophyllum kossinskyi",
        "authorship": "Kuzen."
      },
      {
        "name": "Ceratophyllum manschuricum",
        "authorship": "(Miki) Kitag."
      },
      {
        "name": "Ceratophyllum polyacanthum",
        "authorship": "Schur"
      },
      {
        "name": "Ceratophyllum submersum subsp. muricatum",
        "authorship": "(Cham.) Wilmot-Dear"
      },
      {
        "name": "Ceratophyllum submersum var. manschuricum",
        "authorship": "Miki"
      },
      {
        "name": "Ceratophyllum submersum var. squamosum",
        "authorship": "Wilmot-Dear"
      }
    ],
    "wikipedia": "https://en.wikipedia.org/wiki/Ceratophyllum_muricatum"
  },
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    "usable_found": 7,
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    "noncommercial_excluded": true,
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    "scheme": "TDWG World Geographical Scheme for Recording Plant Distributions, level 3",
    "source": "Kew, World Checklist of Vascular Plants (WCVP v16)",
    "license": "CC BY 3.0",
    "excludes": [
      "introduced",
      "extinct",
      "location_doubtful"
    ],
    "codes": [
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      "BOT",
      "CMN",
      "CHA",
      "EGY",
      "ERI",
      "ETH",
      "GHA",
      "LBY",
      "MLW",
      "MOZ",
      "NGA",
      "TVL",
      "SEN",
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      "CHN",
      "CHC",
      "CHS",
      "CHI",
      "KAZ",
      "CHM",
      "MON",
      "TAI",
      "IND",
      "JAW",
      "NWG",
      "PHI",
      "SOL",
      "SUL",
      "SUM",
      "THA",
      "RUS",
      "FIJ",
      "NWC",
      "VAN"
    ],
    "regions": [
      {
        "code": "ANG",
        "name": "Angola",
        "continent": "AFRICA",
        "region": "South Tropical Africa"
      },
      {
        "code": "BOT",
        "name": "Botswana",
        "continent": "AFRICA",
        "region": "Southern Africa"
      },
      {
        "code": "CMN",
        "name": "Cameroon",
        "continent": "AFRICA",
        "region": "West-Central Tropical Africa"
      },
      {
        "code": "CHA",
        "name": "Chad",
        "continent": "AFRICA",
        "region": "Northeast Tropical Africa"
      },
      {
        "code": "EGY",
        "name": "Egypt",
        "continent": "AFRICA",
        "region": "Northern Africa"
      },
      {
        "code": "ERI",
        "name": "Eritrea",
        "continent": "AFRICA",
        "region": "Northeast Tropical Africa"
      },
      {
        "code": "ETH",
        "name": "Ethiopia",
        "continent": "AFRICA",
        "region": "Northeast Tropical Africa"
      },
      {
        "code": "GHA",
        "name": "Ghana",
        "continent": "AFRICA",
        "region": "West Tropical Africa"
      },
      {
        "code": "LBY",
        "name": "Libya",
        "continent": "AFRICA",
        "region": "Northern Africa"
      },
      {
        "code": "MLW",
        "name": "Malawi",
        "continent": "AFRICA",
        "region": "South Tropical Africa"
      },
      {
        "code": "MOZ",
        "name": "Mozambique",
        "continent": "AFRICA",
        "region": "South Tropical Africa"
      },
      {
        "code": "NGA",
        "name": "Nigeria",
        "continent": "AFRICA",
        "region": "West Tropical Africa"
      },
      {
        "code": "TVL",
        "name": "Northern Provinces",
        "continent": "AFRICA",
        "region": "Southern Africa"
      },
      {
        "code": "SEN",
        "name": "Senegal",
        "continent": "AFRICA",
        "region": "West Tropical Africa"
      },
      {
        "code": "SUD",
        "name": "Sudan-South Sudan",
        "continent": "AFRICA",
        "region": "Northeast Tropical Africa"
      },
      {
        "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": "CHI",
        "name": "Inner Mongolia",
        "continent": "ASIA-TEMPERATE",
        "region": "China"
      },
      {
        "code": "KAZ",
        "name": "Kazakhstan",
        "continent": "ASIA-TEMPERATE",
        "region": "Central Asia"
      },
      {
        "code": "CHM",
        "name": "Manchuria",
        "continent": "ASIA-TEMPERATE",
        "region": "China"
      },
      {
        "code": "MON",
        "name": "Mongolia",
        "continent": "ASIA-TEMPERATE",
        "region": "Mongolia"
      },
      {
        "code": "TAI",
        "name": "Taiwan",
        "continent": "ASIA-TEMPERATE",
        "region": "Eastern Asia"
      },
      {
        "code": "IND",
        "name": "India",
        "continent": "ASIA-TROPICAL",
        "region": "Indian Subcontinent"
      },
      {
        "code": "JAW",
        "name": "Jawa",
        "continent": "ASIA-TROPICAL",
        "region": "Malesia"
      },
      {
        "code": "NWG",
        "name": "New Guinea",
        "continent": "ASIA-TROPICAL",
        "region": "Papuasia"
      },
      {
        "code": "PHI",
        "name": "Philippines",
        "continent": "ASIA-TROPICAL",
        "region": "Malesia"
      },
      {
        "code": "SOL",
        "name": "Solomon Is.",
        "continent": "ASIA-TROPICAL",
        "region": "Papuasia"
      },
      {
        "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": "RUS",
        "name": "South European Russia",
        "continent": "EUROPE",
        "region": "Eastern Europe"
      },
      {
        "code": "FIJ",
        "name": "Fiji",
        "continent": "PACIFIC",
        "region": "Southwestern Pacific"
      },
      {
        "code": "NWC",
        "name": "New Caledonia",
        "continent": "PACIFIC",
        "region": "Southwestern Pacific"
      },
      {
        "code": "VAN",
        "name": "Vanuatu",
        "continent": "PACIFIC",
        "region": "Southwestern Pacific"
      }
    ]
  },
  "phenology": null,
  "traits": {
    "lifeform": "hydroannual or hydrosubshrub",
    "climate": "temperate"
  },
  "climate_envelope": null,
  "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": "climate_envelope",
      "status": "insufficient_evidence",
      "reason": "Fewer than 30 georeferenced research-grade observations of this taxon, which is too few to state a percentile range for the conditions it grows in. We would rather show nothing than a range computed from eight points in one county."
    },
    {
      "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."
    },
    {
      "field": "phenology",
      "status": "not_sourced",
      "reason": "No dated flowering annotations found for this taxon."
    }
  ],
  "license": {
    "data": "CC BY 4.0",
    "attribution": "BotanAI, https://botanai.app/plants/ceratophyllum-muricatum/",
    "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)."
  }
}