592 Salix reticulata L.

Within this arctic-montane species a few lower taxa are distinguished, e.g. subsp. orbicularis (Anderss.) Flod. in NE. Asia and northwestern N. America (mapped separately). European fossil records of interglacial and of Wurm-glacial-late-glacial age outside the recent area are marked on the map (cf. Tralau in Ark. Bot., K. Vet. Ak., Stockh., 5/1963, map p. 556). This species belongs to the circumpolar plants (Hultén, Circumpol. II, p. 48 and map 39). Cf. also Meusel et al. 1965, map p. 113.