Symphyotrichum walteri (Alexander) G.L.Nesom [ Aster squarrosus Walter]
no HD illustration available (m1)
Symphyotrichum walteri (Alexander) G.L.Nesom [ Aster walteri Alexander] [Compositae]
M.V. Walcott, N. Amer. Wild Fl., vol. 2 : t. 160 (1925-1927)