Plant NectarVerbesinaIntroduced SpeciesSolanum nigrumPlants, Genetically ModifiedPlant WeedsComfreyGeraniumPlant ExtractsMikaniaPlants, MedicinalPolygonumPlant LeavesPlant ProteinsEcosystemFlowersPlant Physiological PhenomenaSoilPlantsPollinationEthnobotanyPlant RootsPoaceaeGenes, PlantTreesPlant ShootsBeesDNA, PlantPlant DevelopmentPollenAngiospermsSpecies SpecificityPlants, ToxicPlant CellsHoneyOrchidaceaePlant StemsHeliconiaceaeGenome, PlantGentianaceaeArabidopsisRubiaceaeFeeding Behavior