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Open disturbed areas. Overgrazed pastures. Bottomlands and disturbed moist woods and meadows
CT and southern NY, south to FL, west MN to TX.
Perennial to 2 m. Stems pubescent. Leaves numerous, less pubescent than stem; principle stem leaves opposite, serrate, petiole 1 cm or longer. Heads numerous; flowers white, 9-15 per head; back of corolla lobes glabrous.
Flowers July to October
Wetland indicator: Facultative +
Endangered in NY. The specific epithet 'serotinum' means late, perhaps in reference to when it flowers although it really does not flower much later than other members of this genus. This species can hybridize with E. perfoliatum.
Michael Hough © 2004