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Eurybia conspicua (Lindl.) G.L. Nesom is native to open, mesic conifer (spruce-fir, pine, or aspen-conifer) or aspen woods, from foothills to upper montane zone, mesic to dry meadows, forest openings, in somewhat clayey soils, adapted to spring fires from British Columbia to Manitoba south to northwester Wyoming with disjunct populations further east in Wyoming and the Black Hills of South Dakota ().  The species is distinguished by its often tall erect stems with serrate broadly lanceolate leaves and large heads with stipitate-glandular phyllaries and showy violet-purple rays. Breitung (1988) mapped the distribution. The species includes 12x duodecaploids (2n=108) and 14x plants (2n=c.122-126).

Eurybia conspicua has been treated as Aster conspicuus Lindl. until 1994 when Nesom (1994) proposed the combination accepted here.  Aster forwoodii S. Watson and A. macdougali Coult. & Fish are synonyms.

Breitung, A. J. 1988. Distribution of the Showy Aster, Aster conspicuus. Canad. Field-Naturalist 102: 523-526.

Last revised 12 May 2025 by J.C. Semple

© 2025 J.C. Semple, including all photographs unless otherwise indicated