735 Stellaria calycantha (Ledeb.) Bong.

Within this polymorphic, arctic-montane species several lower taxa are distinguished, especially in N. America. S. calycantha s. str. is considered as occurring in principle through the whole area of the species s. lat. For N. America the same taxa are tentatively mapped here as they were presented in Hultén, Amphi-atl., p. 196 and map 178. The species s. lat. belongs to the amphi-atlantic plants (1. cit.).