{"id":"pyrus-ussuriensis","license":"CC-BY-4.0","data":{"scientificName":"Pyrus ussuriensis","commonNames":["Pyrus ussuriensis"],"taxonRank":"species","acceptedName":"Pyrus ussuriensis","family":"Rosaceae","ids":{"usdaSymbol":"PYUS2","gbifKey":8017230},"usdaZoneMin":"3b","zoneSource":"usda-plants","regions":["China"],"hardinessAssertions":[{"minimum":"3b","interpretation":"minimum-threshold","precision":"half-zone","zoneMapping":"derived-containing-band","sourceMeasurement":{"kind":"minimum-temperature","value":-33,"unit":"degrees-fahrenheit"},"applicability":"uncertain","applicabilityNotes":"USDA PLANTS provides no duration for this record, so perennial hardiness applicability is unresolved.","source":"usda-plants-characteristics","sourceRecordId":"PYUS2","sourceTaxon":"Pyrus ussuriensis","taxonMatch":"source-identifier","sourcePlacement":"PlantCharacteristics record 90734, Temperature, Minimum (°F)","sourceVersion":"PLANTS Help Document 2022; characteristics cache retrieved 2026-08-23","asOf":"2026-08-26T00:00:00.000Z"}],"plantForm":"tree","matureHeightFt":45,"waterNeed":"moderate","evidence":[{"source":"flamits","verdict":"not-rated","verdictRaw":"temperature at flaming (°C): 269","score":{"value":269,"scale":"FLAMITS — temperature at flaming (°C)"},"claims":"FLAMITS record 12572; Ignitability measurement; plant part leaves; fuel live; predrying no; device ignition temperature tester; site Shan2008-1; sampling ND. Primary study Shan2008: Shan, Y., Liu, N., & Shu, L. (2008). Flammability ranking of foliage species by factor analysis of physical and chemical pyric properties. Fire and Materials: An International Journal, 32, 371-382.","plantPart":"leaf","original":"Shan2008","edition":"Dryad version 9","url":"https://doi.org/10.5061/dryad.h18931zr3","documentDate":"2023-12-22T00:00:00.000Z","accessedOn":"2026-08-25T00:00:00.000Z"},{"source":"flamits","verdict":"not-rated","verdictRaw":"calorific value (kcal/kg): 4435.22","score":{"value":4435.22,"scale":"FLAMITS — calorific value (kcal/kg)"},"claims":"FLAMITS record 12573; Combustibility measurement; plant part leaves; fuel live; predrying no; device calorimeter; site Shan2008-1; sampling ND. Primary study Shan2008: Shan, Y., Liu, N., & Shu, L. (2008). Flammability ranking of foliage species by factor analysis of physical and chemical pyric properties. Fire and Materials: An International Journal, 32, 371-382.","plantPart":"leaf","original":"Shan2008","edition":"Dryad version 9","url":"https://doi.org/10.5061/dryad.h18931zr3","documentDate":"2023-12-22T00:00:00.000Z","accessedOn":"2026-08-25T00:00:00.000Z"}],"flammabilityClass":"mixed-evidence","ratingReason":"limited-evidence","recommendation":"candidate","author":"grayson-graham","reviewStatus":"draft","lastVerified":"2026-08-25T00:00:00.000Z","reviewNotes":"FLAMITS measurements are retained as non-voting evidence; the database publishes no cross-variable directional threshold."},"localAssessmentInputs":{"stateDistribution":[],"nativeStates":[],"rangeAssertions":[],"usdaZoneMin":"3b","usdaZoneMax":null,"hardinessAssertions":[{"minimum":"3b","interpretation":"minimum-threshold","precision":"half-zone","zoneMapping":"derived-containing-band","sourceMeasurement":{"kind":"minimum-temperature","value":-33,"unit":"degrees-fahrenheit"},"applicability":"uncertain","applicabilityNotes":"USDA PLANTS provides no duration for this record, so perennial hardiness applicability is unresolved.","source":"usda-plants-characteristics","sourceRecordId":"PYUS2","sourceTaxon":"Pyrus ussuriensis","taxonMatch":"source-identifier","sourcePlacement":"PlantCharacteristics record 90734, Temperature, Minimum (°F)","sourceVersion":"PLANTS Help Document 2022; characteristics cache retrieved 2026-08-23","asOf":"2026-08-26T00:00:00.000Z","provenance":"cited"}],"hardinessSelection":{"status":"unresolved-applicability","assertions":[{"minimum":"3b","interpretation":"minimum-threshold","precision":"half-zone","zoneMapping":"derived-containing-band","sourceMeasurement":{"kind":"minimum-temperature","value":-33,"unit":"degrees-fahrenheit"},"applicability":"uncertain","applicabilityNotes":"USDA PLANTS provides no duration for this record, so perennial hardiness applicability is unresolved.","source":"usda-plants-characteristics","sourceRecordId":"PYUS2","sourceTaxon":"Pyrus ussuriensis","taxonMatch":"source-identifier","sourcePlacement":"PlantCharacteristics record 90734, Temperature, Minimum (°F)","sourceVersion":"PLANTS Help Document 2022; characteristics cache retrieved 2026-08-23","asOf":"2026-08-26T00:00:00.000Z","provenance":"cited"}]},"invasiveIn":[],"statusAssertions":[],"fireEvidenceClass":"mixed-evidence","recommendation":"candidate","fireSourceScopes":[],"firePerformanceConditions":[],"maintenanceAssertions":[],"maintenanceConditions":null,"regulatoryReviews":{},"seedReviews":{}},"legacyCompatibilityProjection":{"nativeStates":[],"invasiveIn":[]},"localAssessmentContract":"Compare each dimension separately. State noxious-weed seed designations are material-scoped and never become non-seed plant restrictions, ecological-invasive findings, nursery restrictions, alternatives, product evidence, or fire votes. Introduced/established context is not an invasive warning. Minimum-only hardiness has no inferred maximum; canonical source-temperature conversion is validated and contradictory applicable rows project no primary zone. L48 context applies only to conterminous states and is never exact-state status. Fire-performance conditions are not maintenance advice. FEIS fire-ecology context does not vote in the plant classification. Absence of a status row is not regulatory clearance."}