| Orobanchaceae | |
Euphrasia officinalis subsp. anglica
| (Pugsley) Silverside | Watsonia 18(4): 348 | 1991 |
| Orobanchaceae | |
Euphrasia officinalis subsp. campestris
| (Jord.) Kerguélen & Lambinon | Nouv. Fl. Belgique, Luxembourg, N. France (ed. 4) 988 | 1992 |
| Orobanchaceae | |
Euphrasia officinalis fo. curta
| Fr. | | |
| Orobanchaceae | |
Euphrasia officinalis var. gracilis
| Fr. | Fl. Hall. 7–10: 104 | 1819 |
| Orobanchaceae | |
Euphrasia officinalis subsp. kerneri
| (Wettst.) Eb. Fisch. | Feddes Repert. 108: 112 | 1997 |
| Orobanchaceae | |
Euphrasia officinalis var. latifolia
| Britton | Mem. Torrey Bot. Club 5(19): 296 | 1894 |
| Orobanchaceae | |
Euphrasia officinalis var. mollis
| Ledeb. | Fl. Ross. [Ledebour] 3: 263 | 1849 |
| Orobanchaceae | |
Euphrasia officinalis subsp. monticola
| Silverside | Watsonia 18(4): 347 | 1991 |
| Orobanchaceae | |
Euphrasia officinalis var. nemorosa
| Pers. | Syn. Pl. 2(1): 149 | 1807 [1806] |
| Orobanchaceae | |
Euphrasia officinalis subsp. rostkoviana
| Towns. | | |
| Orobanchaceae | |
Euphrasia officinalis var. tenuis
| Brenner | | |
| Orobanchaceae | |
Euphrasia officinalis subvar. tetraquetra
| Bréb. | Fl. Normandie (ed. 2) 183 | 1849 |
| Orobanchaceae | |
Euphrasia officinalis subsp. versicolor
| (A. Kern.) Vitek | Schlechtendalia 8: 15 | 2002 |