Euphrasia rostkoviana, Hayne

3. E. rostkoviana Hayne , Darst. Beschr. Arzn. Gewächse 9: t. 7 (1825).

Stem up to 35(-5O) cm, erect, with up to 8(—12) pairs of erect or divergent branches. Cauline internodes mostly much longer than the leaves. Corolla 8-12-5 mm; lower lip white, the upper frequently lilac. Throughout a large part o f Europe, but absent from parts o f the south and east and many o f the islands. Al Au Be Br Bu Cz Da Fe Ga Ge Hb He Ho?Hs Hu It Ju Po Rm Rs (N, B, C, W) Su.

In C. Europe intergradation with 9 takes place, giving large populations of plants some with and some without long glandular hairs, but similar in other characters. 1 Lowest flower at node 2-6; cauline internodes 2-6(-10) times as long as the leaves (a) subsp. montana

1 Lowest flower usually at node 6 or higher; cauline intemodes mostly not more than 3 times as long as the leaves

2Lowest flower usually at node 6-10; lower floral leaves up to 15 mm (b) subsp. rostkoviana

2Lowest flower usually at node 9-16; lower floral leaves usually not more than 9 mm (c) subsp. campestris