1811 Tanacetum bipinnatum (L.) Schultz Bip.

Syn.: Chrysanthemum bipinnatum L.

This species is disjunctly distributed in Eurasia and northwestern N. America. The related T. huronense Nutt., also mapped here, has a disjunct distribution in N. America. Together these species have a discontinuous circumpolar distribution (Hultén, Circumpol. Il, p. 36, 315 f. and map 28).