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cite and link the specific plant page."},{"label":"USDA PLANTS Database","url":"https://plants.usda.gov/plant-profile/RUFU2","license":"U.S. federal government factual data (public domain); cite and link the species PROFILE page."},{"label":"Lady Bird Johnson Wildflower Center Native Plant Database","url":"https://www.wildflower.org/plants/result.php?id_plant=RUFU2","license":"Native-plant database content © University of Texas at Austin; factual data is not copyrightable but attribution is required."},{"label":"Plants of the World Online (Royal Botanic Gardens, Kew)","url":"https://powo.science.kew.org/results?q=Rudbeckia%20fulgida","license":"POWO content © Royal Botanic Gardens, Kew, CC BY 3.0; cite and link the specific taxon page."},{"label":"GBIF (Global Biodiversity Information Facility)","url":"https://www.gbif.org/species/7344766","license":"Aggregated taxonomic-backbone + occurrence data under open licenses; cite and link the GBIF species page."},{"label":"Wikimedia Commons file page","url":"https://commons.wikimedia.org/wiki/File:Rudbeckia_fulgida_'Goldsturm'_(d.j.b.)_01.jpg","license":"CC BY-SA 4.0; 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