Synonym:  Aster macrophyllus  L.

              

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Perennials.  Colony-forming  from rhizomes; colonies often with a large number of sterile rosettes, esp. in deep shade.  Stems may be straight or slightly flexuous, glabrous or pubescent, becoming densely glandular upwards (glands stalked, minute).  Typical height is 2 to 3 feet.

The overall inflorescence is flat- to round-topped, tending to occur toward stem summits.  Robust plants may have additional branches below summits.

Flower heads are radiateRay florets are pistillate and fertile; rays vary from blue-violet to white.  Disc florets are bright yellow, turning magenta with age.  Involucres tend to be broadly cylindricalInvolucral bracts are in several series of unequal length; margins are densely ciliate; dark green zones tend to be basally truncated or diamond-shaped.  Peduncles and involucral bracts are densely glandular (glands stalked, minute).

Basal leaves are present at flowering, often in large colonies.  All but upper leaves are broadly heart shaped, with toothed margins.  All but uppermost leaves are borne on petioles.  Petioles of mid- to upper leaves may be broadly winged.

Cypselae are spindle-shaped.  Pappus is of minutely-barbed bristles.

Plants mostly of woods and clearings.  Flowers from mid-August to mid-September.  Native.

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Similar species:  Eurybia divaricata and E. schreberi.

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