1768 Aster sibiricus L.

This variable species occurs from Fennoscandia (a couple of isolated localities in C. Norway) through N. Russia and Siberia to northwestern N. America. There may be a gap in W. Siberia. The species shows a tendency towards circumpolar distribution. In the NW. Terr. of Canada an aberrant population occurs, called var. pygmaeus (Lindl.) Coda (tentatively mapped here).