Symphyotrichum amethystinum (Nutt.) G.L.Nesom [ Aster amethystinus Nutt.]
      
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6 1219861 Symphyotrichum amethystinum (Nutt.) G.L.Nesom [125 104600 Aster amethystinus Nutt.] Compositae
Addisonia, vol. 2 : t. 60 (1917) [M.E. Eaton]