Visit Gail in my sidebar favorites to see what other wildflowers are finishing out our Autumn season.
We have at least 12 species of Asters, so it's hard to say. I'm guessing Roadside Aster (A. subulatus) or the Starved Aster (A. lateriflorus)
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The delicate branching contrasts with the large, speckled foliage of a Cast Iron Plant (Aspidistra x 'Milky Way' )
The buds look like tiny watermelons.