Cystopteris fragilis subsp. eu-fragilis Ascherson & Graebner nom. inval.

Cystopteris fragilis subsp. eu-fragilis Ascherson & Graebner nom. inval. is a synonym sensu IPNI of:

Cystopteris fragilis (Linnaeus) Bernhardi, an accepted species name sensu FNA Ed. Comm., 1993.