37 Thelypteris limbosperma (All.) H. P. Fuchs

Syn.: int. al. Dryopteris oreopteris (Ehrh.) Maxon, Lastrea limbosperma (All.) Holub

This widespread but strikingly uniform species belongs to the circumpolar plants (Hultén, Circumpol. I, p. 152 and map 144). Cf. also Meusel et al. 1965, map p. 17.