Synonym:  Aster undulatus  L.

              

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Plants of rocky or sandy woods, open woods, clearings, dry roadsides and old fields; usually where competition is sparse.  Flowers mid-August to late September.  Native.

Perennials.  Stems are solitary or clustered from a woody caudex or from short rhizomes; densely pubescent.  Typical height is from 2 to 4 feet.

The inflorescence may vary from tall and narrow to broader, "pyramidal" in shape.  Branches are ascending to widely spreading.

Flower heads are radiate.  Rays are pale blue-violet to nearly white.  Disc floret corollas are yellow, turning reddish with age.  Involucral bracts are well appressed, pubescent on the outer surfaceDark green zones are oblanceolate or diamond-shaped.

Basal and lower stem leaves are deciduous by flowering.  Leaves are wavy-margined (not flat) and clasp stemsMid-stem leaves are ovate or heart-shaped, borne on thin petioles that are auriculate clasping.  Upper leaves are ovate, borne on shorter, wider petioles, or eventually becoming sessile upwards.

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Similar species in the Finger Lakes region: Symphyotrichum cordifolium.
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