Euphrasia coerulea
Synonymy
Source: Marhold, K. (2011+): Euphrasia. – In: Euro+Med Plantbase - the information resource for Euro-Mediterranean plant diversity.
Euphrasia coerulea in Flora 17: 445. 1834
Content
Bibliography
D. Exkursionsflora von Deutschland. 4: Kritischer Band 8, ed. 8 (as Euphrasia nemorosa subsp. coerulea)
E. Marhold, K. & Hindák, F. 1998: Zoznam nižších a vyšších rastlín Slovenska. – Bratislava (as Euphrasia nemorosa subsp. coerulea)
F. Mirek, Z. 1995: Vascular plants of Poland. A Checklist. – Polish Botanical Studies Guidebook Series 15
G. Tutin, T. G., Heywood, V. H., Burges, N. A., Valentine, D. H., Walters, S. M. & Webb, D. A. 1964–1980: Flora europaea 1-5. – Cambridge: Cambridge University Press