Smooth Blue Aster (concinnum)
Symphyotrichum laeve (Linnaeus) A. & D. Love var. concinnum (Willdenow) G.L. Nesom
Smooth Blue Aster (concinnum): https://marylandbiodiversity.com/species/17234
Synonyms
Aster concinnus  Aster leavis var. concinnus 

Source: Wikipedia

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