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Flower visits are a resource-use proxy, not confirmed feeding or pollination. Missing evidence is unknown. Study volume and repeated records earn no extra credit.","maximum_credit":5,"version":"insect-support-1"},"pct":{"bees":0.5272952853598015,"birds":0.9013647642679901,"caterpillars":0.9975186104218362,"specialists":0.4323821339950372,"structure":1},"rank_pct":0.804,"raw":{"bees":1,"birds":8,"caterpillars":311,"genus_used":null,"specialists":0,"structure":["Tree"]}},"fit_score":null,"native_basis":"native_supported","rarity_adjustment":0,"rarity_policy":"Conservation status is displayed separately and never changes ecological scores, including when unranked.","reason":"Calculated with the shared rules using Virginia host-range and shared ecological evidence.","reference":"NC native reference cohort, method 0.6.4; not a Virginia percentile","score":74,"scoring_inputs":{"harm_penalty":0,"invasive":false,"invasive_rank":null,"native":true,"state_rank":"S2"},"source_ids":["lep_va","globi","bigbee","avian","usdahabit","robertson","antseed"],"status":"scored_provisional","version":"shared-0.6.5"},"condition_evidence":{},"evidence":{"fit_score":null,"growth_habit":null,"invasive_status":{"status":"unresolved"},"native_status":{"status":"native_supported"},"occurrence":{"county_fips":["51003","51015","51019","51091","51107","51121","51139","51157","51163","51165"],"meaning":"Recorded occurrence; not a county native-range assertion"},"quercus_score":null,"regional":{"county_fips":["51003","51015","51019","51091","51107","51121","51139","51157","51163","51165"],"growth_habit":null,"growth_habit_source":null,"invasive":null,"invasive_evidence":[],"invasive_rank":null,"native":true,"native_basis":"state_source","native_decided_by":"va_heritage","native_evidence":[{"claim":"native","flag":"N","matched_name":"Betula papyrifera","scope":"VA","source":"va_atlas","url":"https://vaplantatlas.org/index.php?do=plant&plant=363"},{"basis":"exact taxon in the state heritage program list of native plants","claim":"native","matched_name":"Betula papyrifera","scope":"VA","source":"va_heritage","srank":"S2","url":"https://dcr.am.virginia.gov/natural-heritage/document/plantlist-current.pdf"},{"claim":"native","matched_name":"Betula papyrifera","scope":"L48","source":"usda","text":"AK:N CAN:N L48:N SPM:N","url":"https://plants.usda.gov/"},{"basis":"native range text in the regional flora","claim":"native","scope":"DC-DE-IL-IN-KY-MD-NJ-NY-OH-PA-VA-WV","source":"floraquest_northern_tier","text":"Newfoundland and Labrador (Newfoundland), Newfoundland and Labrador (Labrador) and Alaska, south to New Jersey, West Virginia (Vanderhorst et al. 2019), w. Virginia, Ohio, Indiana, Illinois, Iowa, Nebraska, Colorado, and British Columbia.","url":"https://fsus.ncbg.unc.edu/"},{"basis":"native range text names Virginia","claim":"native","scope":"VA","source":"floraquest_northern_tier","text":"Newfoundland and Labrador (Newfoundland), Newfoundland and Labrador (Labrador) and Alaska, south to New Jersey, West Virginia (Vanderhorst et al. 2019), w. Virginia, Ohio, Indiana, Illinois, Iowa, Nebraska, Colorado, and British Columbia.","url":"https://fsus.ncbg.unc.edu/"},{"basis":"species account without the alien asterisk","claim":"native_distribution","matched_name":"Betula papyrifera","scope":"AL-AR-DC-DE-FL-GA-KY-LA-MD-MS-NC-NJ-PA-SC-TN-VA-WV","source":"weakley_fsus","url":"https://fsus.ncbg.unc.edu/"},{"basis":"Native field of the Northern Tier edition; the state is in its distribution","claim":"native","record_id":3397,"scope":"DC-DE-IL-IN-KY-MD-NJ-NY-OH-PA-VA-WV","source":"floraquest_northern_tier","url":"https://fsus.ncbg.unc.edu/"},{"basis":"NatureServe subnational native or exotic flag for this state","claim":"native","matched_name":"Betula papyrifera","scope":"VA","source":"natureserve_explorer","srank":"S2","url":"https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.952179/Betula_papyrifera"}],"native_explanation":"Virginia DCR Natural Heritage rare plant list (government agency, state claim) gives the value.","native_provenance":{"flags":[],"source":"va_heritage","specificity":"state","tier":"government"},"native_status":"native_supported","package_native_status":"native_supported","source_ids":["va_atlas:VA:363"],"source_name":"Betula papyrifera","source_refs":["gbif_specimens","natureserve_explorer","va_atlas","va_heritage"],"source_url":"https://vaplantatlas.org/index.php?do=plant&plant=363","state_rank":"S2"},"source_refs":["gbif_specimens","natureserve_explorer","va_atlas","va_heritage"],"source_url":"https://vaplantatlas.org/index.php?do=plant&plant=363","state_rank":{"value":"S2"}},"fit_inputs":{"light":[3,4],"moisture":[1,2],"ph":[4.2,7.4]},"fit_provenance":{"light":"Niinemets & Valladares 2006 shade tolerance 1.54/5","moisture":"USACE wetland occurrence proxy (EMP)","ph":"USDA PLANTS"},"fit_record":{"band":"Strong","condition_evidence":{},"county_fips":["45031","51003","51015","51019","51091","51107","51121","51139","51157","51163","51165"],"fit_inputs":{"light":[3,4],"moisture":[1,2],"ph":[4.2,7.4]},"fit_note":"Shared sunlight, moisture and pH calculation; county geography is an additional layer. Missing source traits remain unknown.","fit_provenance":{"light":"Niinemets & Valladares 2006 shade tolerance 1.54/5","moisture":"USACE wetland occurrence proxy (EMP)","ph":"USDA PLANTS"},"garden_suitability":{"default_excluded":true,"flags":[{"code":"conservation_caution","default_excluded":true,"label":"Rare or protected plant","message":"Specialist conservation planting; excluded from routine garden suggestions.","records":[{"name":"Betula papyrifera","rank":"S2","source":"https://vaplantatlas.org/index.php?do=plant&plant=363","state":"VA"}],"source":"https://vaplantatlas.org/index.php?do=plant&plant=363"}],"review_status":"reviewed","suggestions_excluded":true},"invasive_rank":false,"native_eligible":true,"quercus_score":74,"state":"VA"},"garden_suitability":{"default_excluded":true,"flags":[{"code":"conservation_caution","default_excluded":true,"label":"Rare or protected plant","message":"Specialist conservation planting; excluded from routine garden suggestions.","records":[{"name":"Betula papyrifera","rank":"S2","source":"https://vaplantatlas.org/index.php?do=plant&plant=363","state":"VA"}],"source":"https://vaplantatlas.org/index.php?do=plant&plant=363"}],"review_status":"reviewed","suggestions_excluded":true},"growing_observations":{"botanical_review_primary_flower_color":{"matched_name":"Betula papyrifera","review_decision":{"reason":"Single consistent flower-color category across the main reference sources; normalization of existing observations, not a fresh anatomical verification.","sources":["betula-papyrifera--usda"],"status":"source_recorded","value":"yellow"},"review_note":"Single consistent flower-color category across the main reference sources; normalization of existing observations, not a fresh anatomical verification.","review_sources":[{"approved_for_correction":true,"evidence_kind":"existing_structured_source_observation","excerpt":"{\"flower_color\": \"Yellow\"}","retrieved":"2026-09-24","sha256":null,"source_record_id":70004,"title":"USDA PLANTS","url":"https://plants.usda.gov/"}],"review_status":"source_recorded","source_label":"USDA PLANTS","source_url":"https://plants.usda.gov/","values":{"primary_flower_color":"yellow"}},"usda":{"matched_name":"Betula papyrifera","retrieved":"2026-09-24","scope":"Nationwide species characteristics; local growing conditions may vary","source_label":"USDA PLANTS","source_url":"https://plants.usda.gov/","usda_id":70004,"values":{"bloom_season":"Mid Spring","flower_color":"Yellow","foliage_color":"Green","fruit_season_begin":"Summer","fruit_season_end":"Summer","growth_architecture":"Single Stem","growth_rate":"Rapid","height_ft":70,"leaf_retention":"No"}}},"native_synthesis":{"claims":[{"claim":"native","flag":"N","matched_name":"Betula papyrifera","scope":"VA","source":"va_atlas","url":"https://vaplantatlas.org/index.php?do=plant&plant=363"},{"basis":"exact taxon in the state heritage program list of native plants","claim":"native","matched_name":"Betula papyrifera","scope":"VA","source":"va_heritage","srank":"S2","url":"https://dcr.am.virginia.gov/natural-heritage/document/plantlist-current.pdf"},{"claim":"native","matched_name":"Betula papyrifera","scope":"L48","source":"usda","text":"AK:N CAN:N L48:N SPM:N","url":"https://plants.usda.gov/"},{"basis":"native range text in the regional flora","claim":"native","scope":"DC-DE-IL-IN-KY-MD-NJ-NY-OH-PA-VA-WV","source":"floraquest_northern_tier","text":"Newfoundland and Labrador (Newfoundland), Newfoundland and Labrador (Labrador) and Alaska, south to New Jersey, West Virginia (Vanderhorst et al. 2019), w. Virginia, Ohio, Indiana, Illinois, Iowa, Nebraska, Colorado, and British Columbia.","url":"https://fsus.ncbg.unc.edu/"},{"basis":"native range text names Virginia","claim":"native","scope":"VA","source":"floraquest_northern_tier","text":"Newfoundland and Labrador (Newfoundland), Newfoundland and Labrador (Labrador) and Alaska, south to New Jersey, West Virginia (Vanderhorst et al. 2019), w. Virginia, Ohio, Indiana, Illinois, Iowa, Nebraska, Colorado, and British Columbia.","url":"https://fsus.ncbg.unc.edu/"},{"basis":"species account without the alien asterisk","claim":"native_distribution","matched_name":"Betula papyrifera","scope":"AL-AR-DC-DE-FL-GA-KY-LA-MD-MS-NC-NJ-PA-SC-TN-VA-WV","source":"weakley_fsus","url":"https://fsus.ncbg.unc.edu/"},{"basis":"Native field of the Northern Tier edition; the state is in its distribution","claim":"native","record_id":3397,"scope":"DC-DE-IL-IN-KY-MD-NJ-NY-OH-PA-VA-WV","source":"floraquest_northern_tier","url":"https://fsus.ncbg.unc.edu/"},{"basis":"NatureServe subnational native or exotic flag for this state","claim":"native","matched_name":"Betula papyrifera","scope":"VA","source":"natureserve_explorer","srank":"S2","url":"https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.952179/Betula_papyrifera"}],"county_native_range":"unresolved","decided_by":"va_heritage","explanation":"Virginia DCR Natural Heritage rare plant list (government agency, state claim) gives the value.","label":"Native to Virginia (state-specific source)","provenance":{"flags":[],"source":"va_heritage","specificity":"state","tier":"government"},"rule":"fact-hierarchy-2","status":"native_supported"},"source_name":"Betula papyrifera","taxon_id":"taxon:36e951b6-ac82-591a-8ba6-dd840d5cbcdf","revision":"publish:cdb975f5-333c-4482-92bd-514ef43ee9c3","photos":[]}