Atlas of North European vascular plants
Hultén & Fries 1986
70 Dryopteris fragans (L.) Schott
This distinct species belongs to the circumpolar plants (Hultén, Circumpol. I, p. 34 and map 27). In parts of N. America and Asia var. remotiuscula Kom. (syn.: var. hoockeriana Fem.) is distinguished.