242 Beckmannia eruciformis (L.) Host

Syn.: B. syzigachne (Steud.) Fem.

This widespread species is differentiated on the map in subsp. eruciformis in Eurasia and subsp. baicalensis (Kuzn.) Hult. in Asia and N. America. To a large extent the species occurs as an adventive plant, for instance in C. and N. Europe and probably in most (or the whole) of N. America. The present distribution is circumpolar (Hultén, Circumpol. I, p. 172 and map 164).