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  "last_modified": "2025-12-15",
  "id": {
    "slug": "agrostis-perennans",
    "wfo": "wfo-0000844160",
    "inat_taxon_id": 143405
  },
  "name": {
    "scientific": "Agrostis perennans",
    "authorship": "(Walter) Tuck.",
    "genus": "Agrostis",
    "epithet": "perennans",
    "family": "Poaceae",
    "rank": "species",
    "taxonomic_status": "accepted",
    "accepted_according_to": "World Flora Online Plant List, 2026-06",
    "is_homonym": false,
    "published_in": "Amer. J. Sci. Arts 45: 44 (1843)",
    "protologue_url": "https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:1128639-2",
    "common": {
      "preferred": "upland bentgrass",
      "english": [
        "upland bentgrass"
      ],
      "source": "wikidata"
    },
    "synonyms": [
      {
        "name": "Agrostis aberrans",
        "authorship": "Steud."
      },
      {
        "name": "Agrostis altissima",
        "authorship": "(Walter) Tuck."
      },
      {
        "name": "Agrostis altissima var. altissima",
        "authorship": null
      },
      {
        "name": "Agrostis altissima var. laxa",
        "authorship": "Tuck."
      },
      {
        "name": "Agrostis anomala",
        "authorship": "Willd."
      },
      {
        "name": "Agrostis campyla",
        "authorship": "Tuck."
      },
      {
        "name": "Agrostis canina subsp. grandiflora",
        "authorship": "Hack."
      },
      {
        "name": "Agrostis chinantlae",
        "authorship": "E.Fourn."
      },
      {
        "name": "Agrostis cornucopiae",
        "authorship": "Sm."
      },
      {
        "name": "Agrostis decumbens",
        "authorship": "(Michx.) Link"
      },
      {
        "name": "Agrostis elata",
        "authorship": "(Pursh) Trin."
      },
      {
        "name": "Agrostis elegans",
        "authorship": "Salisb."
      },
      {
        "name": "Agrostis exarata var. angustifolia",
        "authorship": "Hack."
      },
      {
        "name": "Agrostis fasciculata",
        "authorship": "(Kunth) Roem. & Schult."
      },
      {
        "name": "Agrostis flavidula",
        "authorship": "Steud."
      },
      {
        "name": "Agrostis hiemalis var. oreophila",
        "authorship": "Farw."
      },
      {
        "name": "Agrostis humboldtiana",
        "authorship": "Steud."
      },
      {
        "name": "Agrostis hyemalis var. elata",
        "authorship": "(Pursh) Fernald"
      },
      {
        "name": "Agrostis hyemalis var. oreophila",
        "authorship": "(Trin.) Farw."
      },
      {
        "name": "Agrostis intermedia",
        "authorship": "Scribn."
      },
      {
        "name": "Agrostis kufuim",
        "authorship": "Speg."
      },
      {
        "name": "Agrostis michauxii",
        "authorship": "Trin."
      },
      {
        "name": "Agrostis michauxii",
        "authorship": "Zuccagni ex Roemer"
      },
      {
        "name": "Agrostis novae-angliae",
        "authorship": "Tuck."
      },
      {
        "name": "Agrostis noveboracensis",
        "authorship": "Spreng."
      },
      {
        "name": "Agrostis oreophila",
        "authorship": "Trin."
      },
      {
        "name": "Agrostis perennans f. atherophora",
        "authorship": "Fernald"
      },
      {
        "name": "Agrostis perennans f. chaetophora",
        "authorship": "Fernald"
      },
      {
        "name": "Agrostis perennans f. perennans",
        "authorship": null
      },
      {
        "name": "Agrostis perennans var. aestivalis",
        "authorship": "Vasey"
      },
      {
        "name": "Agrostis perennans var. elata",
        "authorship": "(Pursh) Hitchc."
      },
      {
        "name": "Agrostis perennans var. humilis",
        "authorship": "Farw."
      },
      {
        "name": "Agrostis perennans var. perennans",
        "authorship": null
      },
      {
        "name": "Agrostis pseudointermedia",
        "authorship": "Farw."
      },
      {
        "name": "Agrostis pulchella",
        "authorship": "Kunth"
      },
      {
        "name": "Agrostis scabra",
        "authorship": "Tuck."
      },
      {
        "name": "Agrostis scabra var. perennans",
        "authorship": "(Walter) Alph.Wood"
      },
      {
        "name": "Agrostis schiedeana",
        "authorship": "Trin."
      },
      {
        "name": "Agrostis schiedeana var. schiedeana",
        "authorship": null
      },
      {
        "name": "Agrostis schweinitzii",
        "authorship": "Trin."
      },
      {
        "name": "Agrostis scribneriana",
        "authorship": "Nash"
      },
      {
        "name": "Agrostis tenuifolia var. fretensis",
        "authorship": "Hook.f."
      },
      {
        "name": "Agrostis violacea",
        "authorship": "Phil."
      },
      {
        "name": "Agrostis weberbaueri",
        "authorship": "Mez"
      },
      {
        "name": "Alopecurus carolinianus",
        "authorship": "Spreng."
      },
      {
        "name": "Cornucopiae altissima",
        "authorship": "Walter"
      },
      {
        "name": "Cornucopiae altissimum",
        "authorship": "Walter"
      },
      {
        "name": "Cornucopiae perennans",
        "authorship": "Walter"
      },
      {
        "name": "Trichodium affine",
        "authorship": "Willd. ex Steud."
      },
      {
        "name": "Trichodium altissimum",
        "authorship": "(Walter) Alph.Wood"
      },
      {
        "name": "Trichodium altissimum var. laxum",
        "authorship": "(Tuck.) Alph.Wood"
      },
      {
        "name": "Trichodium decumbens",
        "authorship": "Michx."
      },
      {
        "name": "Trichodium elatum",
        "authorship": "Pursh"
      },
      {
        "name": "Trichodium muehlenbergiana",
        "authorship": "Schult."
      },
      {
        "name": "Trichodium noveboracense",
        "authorship": "(Spreng.) Schult. & Schult.f."
      },
      {
        "name": "Trichodium perennans",
        "authorship": "(Walter) Elliott"
      },
      {
        "name": "Vilfa elegans",
        "authorship": "Kunth"
      },
      {
        "name": "Vilfa fasciculata",
        "authorship": "Kunth"
      }
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    "wikipedia": "https://en.wikipedia.org/wiki/Agrostis_perennans"
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      {
        "code": "NBR",
        "name": "New Brunswick",
        "continent": "NORTHERN AMERICA",
        "region": "Eastern Canada"
      },
      {
        "code": "NWH",
        "name": "New Hampshire",
        "continent": "NORTHERN AMERICA",
        "region": "Northeastern U.S.A."
      },
      {
        "code": "NWJ",
        "name": "New Jersey",
        "continent": "NORTHERN AMERICA",
        "region": "Northeastern U.S.A."
      },
      {
        "code": "NWY",
        "name": "New York",
        "continent": "NORTHERN AMERICA",
        "region": "Northeastern U.S.A."
      },
      {
        "code": "NFL",
        "name": "Newfoundland",
        "continent": "NORTHERN AMERICA",
        "region": "Eastern Canada"
      },
      {
        "code": "NCA",
        "name": "North Carolina",
        "continent": "NORTHERN AMERICA",
        "region": "Southeastern U.S.A."
      },
      {
        "code": "NDA",
        "name": "North Dakota",
        "continent": "NORTHERN AMERICA",
        "region": "North-Central U.S.A."
      },
      {
        "code": "NSC",
        "name": "Nova Scotia",
        "continent": "NORTHERN AMERICA",
        "region": "Eastern Canada"
      },
      {
        "code": "OHI",
        "name": "Ohio",
        "continent": "NORTHERN AMERICA",
        "region": "Northeastern U.S.A."
      },
      {
        "code": "OKL",
        "name": "Oklahoma",
        "continent": "NORTHERN AMERICA",
        "region": "North-Central U.S.A."
      },
      {
        "code": "ONT",
        "name": "Ontario",
        "continent": "NORTHERN AMERICA",
        "region": "Eastern Canada"
      },
      {
        "code": "ORE",
        "name": "Oregon",
        "continent": "NORTHERN AMERICA",
        "region": "Northwestern U.S.A."
      },
      {
        "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": "RHO",
        "name": "Rhode I.",
        "continent": "NORTHERN AMERICA",
        "region": "Northeastern U.S.A."
      },
      {
        "code": "SCA",
        "name": "South Carolina",
        "continent": "NORTHERN AMERICA",
        "region": "Southeastern U.S.A."
      },
      {
        "code": "SDA",
        "name": "South Dakota",
        "continent": "NORTHERN AMERICA",
        "region": "North-Central U.S.A."
      },
      {
        "code": "TEN",
        "name": "Tennessee",
        "continent": "NORTHERN AMERICA",
        "region": "Southeastern U.S.A."
      },
      {
        "code": "TEX",
        "name": "Texas",
        "continent": "NORTHERN AMERICA",
        "region": "South-Central U.S.A."
      },
      {
        "code": "VER",
        "name": "Vermont",
        "continent": "NORTHERN AMERICA",
        "region": "Northeastern U.S.A."
      },
      {
        "code": "VRG",
        "name": "Virginia",
        "continent": "NORTHERN AMERICA",
        "region": "Southeastern U.S.A."
      },
      {
        "code": "WAS",
        "name": "Washington",
        "continent": "NORTHERN AMERICA",
        "region": "Northwestern U.S.A."
      },
      {
        "code": "WVA",
        "name": "West Virginia",
        "continent": "NORTHERN AMERICA",
        "region": "Northeastern U.S.A."
      },
      {
        "code": "WIS",
        "name": "Wisconsin",
        "continent": "NORTHERN AMERICA",
        "region": "North-Central U.S.A."
      },
      {
        "code": "AGE",
        "name": "Argentina Northeast",
        "continent": "SOUTHERN AMERICA",
        "region": "Southern South America"
      },
      {
        "code": "AGW",
        "name": "Argentina Northwest",
        "continent": "SOUTHERN AMERICA",
        "region": "Southern South America"
      },
      {
        "code": "AGS",
        "name": "Argentina South",
        "continent": "SOUTHERN AMERICA",
        "region": "Southern South America"
      },
      {
        "code": "BOL",
        "name": "Bolivia",
        "continent": "SOUTHERN AMERICA",
        "region": "Western South America"
      },
      {
        "code": "CLC",
        "name": "Chile Central",
        "continent": "SOUTHERN AMERICA",
        "region": "Southern South America"
      },
      {
        "code": "CLS",
        "name": "Chile South",
        "continent": "SOUTHERN AMERICA",
        "region": "Southern South America"
      },
      {
        "code": "CLM",
        "name": "Colombia",
        "continent": "SOUTHERN AMERICA",
        "region": "Western South America"
      },
      {
        "code": "COS",
        "name": "Costa Rica",
        "continent": "SOUTHERN AMERICA",
        "region": "Central America"
      },
      {
        "code": "DOM",
        "name": "Dominican Republic",
        "continent": "SOUTHERN AMERICA",
        "region": "Caribbean"
      },
      {
        "code": "ECU",
        "name": "Ecuador",
        "continent": "SOUTHERN AMERICA",
        "region": "Western South America"
      },
      {
        "code": "GUA",
        "name": "Guatemala",
        "continent": "SOUTHERN AMERICA",
        "region": "Central America"
      },
      {
        "code": "HAI",
        "name": "Haiti",
        "continent": "SOUTHERN AMERICA",
        "region": "Caribbean"
      },
      {
        "code": "HON",
        "name": "Honduras",
        "continent": "SOUTHERN AMERICA",
        "region": "Central America"
      },
      {
        "code": "PER",
        "name": "Peru",
        "continent": "SOUTHERN AMERICA",
        "region": "Western South America"
      },
      {
        "code": "VEN",
        "name": "Venezuela",
        "continent": "SOUTHERN AMERICA",
        "region": "Northern South America"
      }
    ]
  },
  "phenology": {
    "n": 2,
    "n_annotated": 8,
    "sufficient": false,
    "doi": null,
    "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": "perennial",
    "climate": "temperate"
  },
  "climate_envelope": {
    "mean_annual_temp_c": {
      "p5": 5,
      "median": 10.5,
      "p95": 16.4
    },
    "temp_seasonality": {
      "p5": 656.9,
      "median": 885.5,
      "p95": 1031.9
    },
    "max_temp_warmest_month_c": {
      "p5": 23,
      "median": 27.5,
      "p95": 31.6
    },
    "min_temp_coldest_month_c": {
      "p5": -14.8,
      "median": -6.2,
      "p95": 1.7
    },
    "annual_precip_mm": {
      "p5": 890.3,
      "median": 1107.7,
      "p95": 1683.1
    },
    "precip_seasonality": {
      "p5": 8.9,
      "median": 15.4,
      "p95": 28.8
    },
    "precip_driest_quarter_mm": {
      "p5": 144.7,
      "median": 226,
      "p95": 334.7
    },
    "n": 228,
    "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": null,
    "method": "Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 228 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."
    },
    {
      "field": "phenology",
      "status": "insufficient_evidence",
      "reason": "Only 2 annotated flowering records, below our threshold of 30. A curve fitted to a dozen records is noise, so we do not draw one."
    }
  ],
  "license": {
    "data": "CC BY 4.0",
    "attribution": "BotanAI, https://botanai.app/plants/agrostis-perennans/",
    "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)."
  }
}