Photo: Conyza canadensis 3.

Flowers and empty seedheads, seen from above. Annala, Helsinki, Finland. Wild. 2004-08-18.

Conyza canadensis (L.) Cronq.
Engl.: Canadian fleabane, Canadian horseweed, butterweed, coltstail, fireweed, fleawort, hogweed, horseweed, mare's tail, prideweed, scabious.
Deu.: Kanadisches Berufkraut.
Suom.: kanadankoiransilmä.
Sven.: kanadabinka.
Bot. syn.: Erigeron canadensis L., Leptilon canadense Britt. & A. Brown, Trimorpha canadensis (L.) Lindm.