Synonym:  A. borealis (Torrey and A. Gray)

              

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Plants of fens, bogs, marshes or wet meadows, often on calcareous or circumneutral soils.  Flowers late August to mid-September.  Native.
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Perennials.  Colony-forming from long, thin rhizomes.  Typical height is from 2 to 3 feet.

Flower heads are radiate, relatively few in number, located mainly at tips of branches.  Rays are typically pale blue-violet to nearly white.  Disc floret corollas are yellow, turning reddish with age.  Involucral bracts are mostly appressed; the outermost may spread slightly.  Dark green zones are oblanceolate.

Basal and lower stem leaves are often absent at flowering.  Mid- to upper stem leaves and branch leaves tend to point upwards, are narrow (linear to lance-linear), somewhat stiff, the margins often slightly curled toward the lower leaf surface.

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Though morphologically unique among aster species in central New York, Symphyotrichum boreale can be confused elsewhere in the Northeast with Symphyotrichum novi-belgii var. elodes, where the latter is also present.
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