Euphrasia frigida, Pugsley

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1972, Flora Europaea. Volume 3. Diapensiacea to Myoporaceae, Cambridge: Cambridge University Press : 264

25. E. frigida Pugsley , Jour. Linn. Soc. London (Bot.) 48: 490 (1930)

( E. minima auct. scand., non DC.).

Stem up to 20(-30) cm, flexuous or erect, with 0-2(-3) pairs of erect branches. Cauline internodes 1-5(-10) times, the lower floral l-4(-5) times as long as the leaves. Lowest flower at node 2-4(-5). Cauline leaves 3-11 (-13) mm, more or less setose, sometimes also with short glandular hairs, oblong to suborbicular, broadly cuneate or shortly petiolate at base, with l-4(-5) pairs of obtuse to subacute teeth; lower floral leaves (3—)5—12(—18) mm, elliptical to deflate or suborbicular, cuneate to truncate at base, with 2-5(-8) pairs of obtuse to subacute teeth usually not longer than wide. Corolla 4-7(-8) mm, white to lilac, rarely purple. Capsule (4-)5-7 mm, about as long as or longer than the calyx, about twice as long as wide, obovate to broadly oblong, emarginate, or rarely truncate. 2« = 44. Grassy places or rock-ledges, mostly on mountains except in the extreme north. N. Europe. Br?Cz Fa Fe Hb Is No Rs (N, C) Sb Su.

Plants from Iceland referred to this species have usually densely hairy leaves and very small corolla, and may be difficult to distinguish from 28 or 34.