153 Maianthemum bifolium (L.) F. W. Schm.

This species has a wide distribution through boreal Eurasia. Outside Eurasia it is replaced by closely related taxa, in the Pacific area by M dilatatum (Wood.) Nels. & Macbr., in N. America by M canadense Desf. var. canadense and var. interius Fem. Together these taxa form a circumpolar distribution pattern (Hultén, Circumpol. I, p. 186 and map 175). Cf. also Meusel et al. 1965, map p. 98.