1671 Euphrasia rostkoviana Hayne

This polymorphic species includes some lower taxa. Of these, subsp. rostkoviana (incl. E. fennica Kihlm. and E. onegensis Cajander) occurs throughout the range of the species (cf. Fl. Eur. 3/1972, p. 260). Subsp. montana (Jordan) Wettst. is an earlyflowering taxon, occurring throughout most of the area of subsp. rostkoviana.