{"id":"ambrosia-dumosa","license":"CC-BY-4.0","data":{"scientificName":"Ambrosia dumosa","commonNames":["Ambrosia dumosa"],"taxonRank":"species","acceptedName":"Ambrosia dumosa","family":"Asteraceae","ids":{"usdaSymbol":"AMDU2","gbifKey":3110634},"usdaZoneMin":"5b","zoneSource":"usda-plants","states":["AZ","CA","NV","UT"],"rangeAssertions":[{"relation":"native","geography":{"grain":"state","stateCodes":["AZ"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 76 — Southwestern U.S.A.","TDWG level 3 ARI — Arizona"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z"},{"relation":"native","geography":{"grain":"state","stateCodes":["CA"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 76 — Southwestern U.S.A.","TDWG level 3 CAL — California"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z"},{"relation":"native","geography":{"grain":"state","stateCodes":["NV"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 76 — Southwestern U.S.A.","TDWG level 3 NEV — Nevada"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z"},{"relation":"native","geography":{"grain":"state","stateCodes":["UT"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 76 — Southwestern U.S.A.","TDWG level 3 UTA — Utah"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z"}],"hardinessAssertions":[{"minimum":"5b","interpretation":"minimum-threshold","precision":"half-zone","zoneMapping":"derived-containing-band","sourceMeasurement":{"kind":"minimum-temperature","value":-11,"unit":"degrees-fahrenheit"},"applicability":"applicable","source":"usda-plants-characteristics","sourceRecordId":"AMDU2","sourceTaxon":"Ambrosia dumosa","taxonMatch":"source-identifier","sourcePlacement":"PlantCharacteristics record 31502, Temperature, Minimum (°F)","sourceVersion":"PLANTS Help Document 2022; characteristics cache retrieved 2026-08-23","asOf":"2026-08-26T00:00:00.000Z"}],"plantForm":"shrub","matureHeightFt":2,"waterNeed":"low","evidence":[{"source":"flamits","verdict":"not-rated","verdictRaw":"rate of burning spread (cm/s): 0.12","score":{"value":0.12,"scale":"FLAMITS — rate of burning spread (cm/s)"},"claims":"FLAMITS record 3464; Sustainability measurement; plant part litter; fuel all; predrying yes; device burning bench; site Fuentes2016-2; sampling june to july. Primary study Fuentes2016: Fuentes-Ramirez, A., Veldman, J. W., Holzapfel, C., & Moloney, K. A. (2016). Spreaders, igniters, and burning shrubs: plant flammability explains novel fire dynamics in grass-invaded deserts. Ecological Applications, 26, 2311-2322.","plantPart":"litter","original":"Fuentes2016","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":"flaming duration (s): 250.2","score":{"value":250.2,"scale":"FLAMITS — flaming duration (s)"},"claims":"FLAMITS record 3468; Sustainability measurement; plant part litter; fuel all; predrying yes; device burning bench; site Fuentes2016-2; sampling june to july. Primary study Fuentes2016: Fuentes-Ramirez, A., Veldman, J. W., Holzapfel, C., & Moloney, K. A. (2016). Spreaders, igniters, and burning shrubs: plant flammability explains novel fire dynamics in grass-invaded deserts. Ecological Applications, 26, 2311-2322.","plantPart":"litter","original":"Fuentes2016","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":"burnt biomass (%): 83.3","score":{"value":83.3,"scale":"FLAMITS — burnt biomass (%)"},"claims":"FLAMITS record 3472; Consumability measurement; plant part litter; fuel all; predrying yes; device burning bench; site Fuentes2016-2; sampling june to july. Primary study Fuentes2016: Fuentes-Ramirez, A., Veldman, J. W., Holzapfel, C., & Moloney, K. A. (2016). Spreaders, igniters, and burning shrubs: plant flammability explains novel fire dynamics in grass-invaded deserts. Ecological Applications, 26, 2311-2322.","plantPart":"litter","original":"Fuentes2016","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":"flame height (cm): 30.8","score":{"value":30.8,"scale":"FLAMITS — flame height (cm)"},"claims":"FLAMITS record 3476; Combustibility measurement; plant part litter; fuel all; predrying yes; device burning bench; site Fuentes2016-2; sampling june to july. Primary study Fuentes2016: Fuentes-Ramirez, A., Veldman, J. W., Holzapfel, C., & Moloney, K. A. (2016). Spreaders, igniters, and burning shrubs: plant flammability explains novel fire dynamics in grass-invaded deserts. Ecological Applications, 26, 2311-2322.","plantPart":"litter","original":"Fuentes2016","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":"maximum flame temperature (°C): 837.7","score":{"value":837.7,"scale":"FLAMITS — maximum flame temperature (°C)"},"claims":"FLAMITS record 3480; Combustibility measurement; plant part litter; fuel all; predrying yes; device burning bench; site Fuentes2016-2; sampling june to july. Primary study Fuentes2016: Fuentes-Ramirez, A., Veldman, J. W., Holzapfel, C., & Moloney, K. A. (2016). Spreaders, igniters, and burning shrubs: plant flammability explains novel fire dynamics in grass-invaded deserts. Ecological Applications, 26, 2311-2322.","plantPart":"litter","original":"Fuentes2016","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":"maximum flame temperature (°C): 779.6","score":{"value":779.6,"scale":"FLAMITS — maximum flame temperature (°C)"},"claims":"FLAMITS record 3484; Combustibility measurement; plant part litter; fuel all; predrying yes; device burning bench; site Fuentes2016-2; sampling june to july. Primary study Fuentes2016: Fuentes-Ramirez, A., Veldman, J. W., Holzapfel, C., & Moloney, K. A. (2016). Spreaders, igniters, and burning shrubs: plant flammability explains novel fire dynamics in grass-invaded deserts. Ecological Applications, 26, 2311-2322.","plantPart":"litter","original":"Fuentes2016","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":"maximum flame temperature (°C): 724.6","score":{"value":724.6,"scale":"FLAMITS — maximum flame temperature (°C)"},"claims":"FLAMITS record 3488; Combustibility measurement; plant part litter; fuel all; predrying yes; device burning bench; site Fuentes2016-2; sampling june to july. Primary study Fuentes2016: Fuentes-Ramirez, A., Veldman, J. W., Holzapfel, C., & Moloney, K. A. (2016). Spreaders, igniters, and burning shrubs: plant flammability explains novel fire dynamics in grass-invaded deserts. Ecological Applications, 26, 2311-2322.","plantPart":"litter","original":"Fuentes2016","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":"maximum flame temperature (°C): 572.4","score":{"value":572.4,"scale":"FLAMITS — maximum flame temperature (°C)"},"claims":"FLAMITS record 3492; Combustibility measurement; plant part litter; fuel all; predrying yes; device burning bench; site Fuentes2016-2; sampling june to july. Primary study Fuentes2016: Fuentes-Ramirez, A., Veldman, J. W., Holzapfel, C., & Moloney, K. A. (2016). Spreaders, igniters, and burning shrubs: plant flammability explains novel fire dynamics in grass-invaded deserts. Ecological Applications, 26, 2311-2322.","plantPart":"litter","original":"Fuentes2016","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":["AZ","CA","NV","UT"],"nativeStates":[],"rangeAssertions":[{"relation":"native","geography":{"grain":"state","stateCodes":["AZ"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 76 — Southwestern U.S.A.","TDWG level 3 ARI — Arizona"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z","provenance":"cited"},{"relation":"native","geography":{"grain":"state","stateCodes":["CA"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 76 — Southwestern U.S.A.","TDWG level 3 CAL — California"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z","provenance":"cited"},{"relation":"native","geography":{"grain":"state","stateCodes":["NV"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 76 — Southwestern U.S.A.","TDWG level 3 NEV — Nevada"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z","provenance":"cited"},{"relation":"native","geography":{"grain":"state","stateCodes":["UT"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 76 — Southwestern U.S.A.","TDWG level 3 UTA — Utah"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z","provenance":"cited"},{"relation":"documented-occurrence","geography":{"grain":"state","stateCodes":["AZ","CA","NV","UT"]},"provenance":"legacy-field"}],"usdaZoneMin":"5b","usdaZoneMax":null,"hardinessAssertions":[{"minimum":"5b","interpretation":"minimum-threshold","precision":"half-zone","zoneMapping":"derived-containing-band","sourceMeasurement":{"kind":"minimum-temperature","value":-11,"unit":"degrees-fahrenheit"},"applicability":"applicable","source":"usda-plants-characteristics","sourceRecordId":"AMDU2","sourceTaxon":"Ambrosia dumosa","taxonMatch":"source-identifier","sourcePlacement":"PlantCharacteristics record 31502, 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":"selected","assertion":{"minimum":"5b","interpretation":"minimum-threshold","precision":"half-zone","zoneMapping":"derived-containing-band","sourceMeasurement":{"kind":"minimum-temperature","value":-11,"unit":"degrees-fahrenheit"},"applicability":"applicable","source":"usda-plants-characteristics","sourceRecordId":"AMDU2","sourceTaxon":"Ambrosia dumosa","taxonMatch":"source-identifier","sourcePlacement":"PlantCharacteristics record 31502, Temperature, Minimum (°F)","sourceVersion":"PLANTS Help Document 2022; characteristics cache retrieved 2026-08-23","asOf":"2026-08-26T00:00:00.000Z","provenance":"cited"},"assertions":[{"minimum":"5b","interpretation":"minimum-threshold","precision":"half-zone","zoneMapping":"derived-containing-band","sourceMeasurement":{"kind":"minimum-temperature","value":-11,"unit":"degrees-fahrenheit"},"applicability":"applicable","source":"usda-plants-characteristics","sourceRecordId":"AMDU2","sourceTaxon":"Ambrosia dumosa","taxonMatch":"source-identifier","sourcePlacement":"PlantCharacteristics record 31502, 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":["AZ","CA","NV","UT"],"invasiveIn":[],"usdaZoneMin":"5b"},"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."}