514 Carex sylvatica Huds.

This species occurs in large parts of Eurasia. Some lower taxa may be distinguished beside subsp. sylvatica, viz. subsp. paui (Sennen) A. & O. Bol6s in Spain, var. algeriensis (Nelmes) Maire & Weill. in Algeria and subsp. arnellii (Christ) nov. comb. in E. Europe and, separately, in C. and E. Asia, the lastmentioned tentatively mapped here. It has been introduced into eastern N. America. Cf. also Meusel et al. 1965, map p. 76.