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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":0.24379652605459057,"birds":0.7481389578163772,"caterpillars":0.792803970223325,"specialists":0.4323821339950372,"structure":0.5},"rank_pct":0.408,"raw":{"bees":0,"birds":2,"caterpillars":11,"genus_used":null,"specialists":0,"structure":["Graminoid"]}},"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 West Virginia host-range and shared ecological evidence.","reference":"NC native reference cohort, method 0.6.4; not a West Virginia percentile","score":40,"scoring_inputs":{"harm_penalty":0,"invasive":false,"invasive_rank":null,"native":true,"state_rank":"S3"},"source_ids":["lep_wv","globi","bigbee","avian","usdahabit","robertson","antseed"],"status":"scored_provisional","version":"shared-0.6.5"},"condition_evidence":{"light":{"evidence_id":"fact:4356c43fe766e8f90fc51c71e760725e41a0d8c1ee338775674a96887ee5ae67","levels":[4],"policy":"selected-condition-categories-2","range":[4,4],"scope":"Published Tennessee growing guidance; exact cached scientific heading","semantics":"source_light_categories_preserved_without_hour_conversion","source_field":"light","source_label":"Tennessee Smart Yards","source_url":"https://tynnativeplants.wordpress.com/grasses-2/scientific-name/reed-manna-grass-american-manna-grass/","status":"mapped_selected_fact"},"moisture":{"evidence_id":"fact:cc6df18b611731b79d41102608a6df3ae3548020b282258b50b3953cfef7c148","levels":[3,4],"policy":"selected-condition-categories-2","range":[3,4],"scope":"Published Tennessee growing guidance; exact cached scientific heading","semantics":"source_drainage_or_moisture_categories_preserved","source_field":"moisture_categories","source_label":"Tennessee Smart Yards","source_url":"https://tynnativeplants.wordpress.com/grasses-2/scientific-name/reed-manna-grass-american-manna-grass/","status":"mapped_selected_fact"}},"evidence":{"fit_score":null,"growth_habit":["Graminoid"],"invasive_status":{"status":"unresolved"},"native_status":{"status":"native_supported"},"occurrence":{"county_fips":["54093"],"meaning":"Recorded occurrence; not a county native-range assertion"},"quercus_score":null,"regional":{"county_fips":["54093"],"growth_habit":null,"growth_habit_source":null,"invasive":null,"invasive_evidence":[],"invasive_rank":null,"native":true,"native_basis":"state_source","native_decided_by":"natureserve_explorer","native_evidence":[{"claim":"native","matched_name":"Glyceria grandis","scope":"L48","source":"usda","text":"AK:N CAN:N L48:N SPM:N","url":"https://plants.usda.gov/"},{"claim":"native","matched_name":"Glyceria grandis","scope":"NC","source":"nc_flora","url":"https://auth1.dpr.ncparks.gov/flora/"},{"basis":"NatureServe subnational native or exotic flag for this state","claim":"native","matched_name":"Glyceria grandis","scope":"WV","source":"natureserve_explorer","srank":"S3","url":"https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.136537/Glyceria_grandis"}],"native_explanation":"NatureServe Explorer (garden or conservation group, state claim) gives the value, over a broader claim from a higher tier. Speaks for its own area (NC), not this state: Vascular Plants of North Carolina (NC Natural Heritage Program).","native_provenance":{"flags":["over_higher_tier"],"source":"natureserve_explorer","specificity":"state","tier":"organization"},"native_status":"native_supported","package_native_status":"native_supported","source_ids":["natureserve_explorer:WV:ELEMENT_GLOBAL.2.136537"],"source_name":"Glyceria grandis","source_refs":["gbif_specimens","natureserve_explorer"],"source_url":"https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.136537","state_rank":"S3"},"source_refs":["gbif_specimens","natureserve_explorer"],"source_url":"https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.136537","state_rank":{"value":"S3"}},"fit_inputs":{"light":[4,4],"moisture":[3,4],"ph":null},"fit_provenance":{"light":"Tennessee Smart Yards","moisture":"Tennessee Smart Yards"},"fit_record":{"band":"Good","condition_evidence":{"light":{"evidence_id":"fact:4356c43fe766e8f90fc51c71e760725e41a0d8c1ee338775674a96887ee5ae67","levels":[4],"policy":"selected-condition-categories-2","range":[4,4],"scope":"Published Tennessee growing guidance; exact cached scientific heading","semantics":"source_light_categories_preserved_without_hour_conversion","source_field":"light","source_label":"Tennessee Smart Yards","source_url":"https://tynnativeplants.wordpress.com/grasses-2/scientific-name/reed-manna-grass-american-manna-grass/","status":"mapped_selected_fact"},"moisture":{"evidence_id":"fact:cc6df18b611731b79d41102608a6df3ae3548020b282258b50b3953cfef7c148","levels":[3,4],"policy":"selected-condition-categories-2","range":[3,4],"scope":"Published Tennessee growing guidance; exact cached scientific heading","semantics":"source_drainage_or_moisture_categories_preserved","source_field":"moisture_categories","source_label":"Tennessee Smart Yards","source_url":"https://tynnativeplants.wordpress.com/grasses-2/scientific-name/reed-manna-grass-american-manna-grass/","status":"mapped_selected_fact"}},"county_fips":["47141","54093"],"fit_inputs":{"light":[4,4],"moisture":[3,4],"ph":null},"fit_note":"Shared sunlight, moisture and pH calculation; county geography is an additional layer. Missing source traits remain unknown.","fit_provenance":{"light":"Tennessee Smart Yards","moisture":"Tennessee Smart Yards"},"garden_suitability":{"default_excluded":false,"flags":[],"review_status":"not_assessed","suggestions_excluded":false},"invasive_rank":false,"native_eligible":true,"quercus_score":40,"state":"WV"},"garden_suitability":{"default_excluded":false,"flags":[],"review_status":"not_assessed","suggestions_excluded":false},"growing_observations":{"prairie_moon_2026":{"identity_basis":"Exact scientific name; no new synonym guesses","matched_name":"Glyceria grandis","page":16,"retrieved":"2026-09-30T18:00:34.396046+00:00","row_top":202.02769999999998,"scope":"Nursery cultural guide; height in flower; moisture categories retained as printed","source_label":"Prairie Moon 2026 Cultural Guide","source_sha256":"a0653d627b36184cd6bdd39aaea55efe2c15be3899976de28f978edc07a23cf1","source_url":"https://www.prairiemoon.com/catalogs/Prairie-Moon-Nursery-Cultural-Guide-2026.pdf","values":{"bloom_season":["June","July","August","September"],"height_description":"5 feet (in flower)","light":["Full sun (6+ hours)"],"moisture_categories":["Wet","Wet-mesic"]}},"ut_smart_yards":{"identity_basis":"Exact scientific name; no new synonym guesses","matched_name":"Glyceria grandis","modified":"2017-01-08T17:24:17+00:00","page_id":"6080","scope":"Published Tennessee growing guidance; exact cached scientific heading","source_label":"Tennessee Smart Yards","source_url":"https://tynnativeplants.wordpress.com/grasses-2/scientific-name/reed-manna-grass-american-manna-grass/","values":{"height_description":"3-5 feet","light":["Full sun"],"moisture_categories":["wet to moderately wet"]}}},"light_range":["full sun","full sun"],"light_source":"Tennessee Smart Yards","native_synthesis":{"claims":[{"claim":"native","matched_name":"Glyceria grandis","scope":"L48","source":"usda","text":"AK:N CAN:N L48:N SPM:N","url":"https://plants.usda.gov/"},{"claim":"native","matched_name":"Glyceria grandis","scope":"NC","source":"nc_flora","url":"https://auth1.dpr.ncparks.gov/flora/"},{"basis":"NatureServe subnational native or exotic flag for this state","claim":"native","matched_name":"Glyceria grandis","scope":"WV","source":"natureserve_explorer","srank":"S3","url":"https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.136537/Glyceria_grandis"}],"county_native_range":"unresolved","decided_by":"natureserve_explorer","explanation":"NatureServe Explorer (garden or conservation group, state claim) gives the value, over a broader claim from a higher tier. Speaks for its own area (NC), not this state: Vascular Plants of North Carolina (NC Natural Heritage Program).","label":"Native to West Virginia (state-specific source)","provenance":{"flags":["over_higher_tier"],"source":"natureserve_explorer","specificity":"state","tier":"organization"},"rule":"fact-hierarchy-2","status":"native_supported"},"source_name":"Glyceria grandis","taxon_id":"taxon:c555b949-2dc1-5834-beb6-f9611bee1b30","revision":"publish:d412fcf4-883a-4c06-b542-542693807821","photos":[{"id":"glyceria-grandis-24903987","src":"/api/photos/image/c602d4a15d2416fd5bb4c34b75ad71ad936036592c72da963a15c6c152403e97.png","view":"fruit","alt":"Glyceria grandis — fruit photograph","width":960,"height":720,"artist":"Jose Hernandez. Provided by ARS Systematic Botany and Mycology Laboratory. 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