Die Euphrasia-Arten Norwegens. 325 
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plant outside this region has immigrated at an earlier date; 
its continental character points again to the same period as 
for E. brevipila, the boreal age. 
9. E. borealis (Towns.) Wettst. In many different forms rather 
common on the west coast from the south point of our 
country to the neighbourhood of Romsdalen; farther north, 
up to the polar circle, less common. On the south-eastern 
coast from the south point to the mouth of the Kristiania- 
fjord forms, transitional to E. stricta, occur. On the coast 
of Nordland the species passes apparently without any limit 
into E. latifolia and the following species. A pretty, early 
flowering form, *E. atlantica, very similar to *E. tenuis and 
*E. suecica, together with a tolerably well developed late- 
summer form, which latter does not extend far north and 
answers very well to the type-specimens of Townsend 
(depicted by Wettstein), occurs, as well as more undiffe- 
rentiated forms. Passes without limit into E. stricta, which 
is especially apparent with late flowering specimens; on the 
other hand, like FE. stricta, it is so mixed up with forms 
transitional to E. brevipila that both species as a rule can 
only be distinguished from each other by the existence or 
want of glandular hairs. Outside of our country the species 
occurs in the British Isles, especially numerous in the 
northern regions, in the Færöes and in Denmark, and. may, 
according to my experience, very well be considered to be 
a coast form of E. stricta, developed by the influence of a 
rather rough climate. On the other hand, Townsend 
himself considered it in his last publications as making to- 
gether with E. brevipila only a single species, occurring with 
or without glandular hairs. 
10. E. hyperborea Jorg. in sched. Distributed in Northern Nor- 
way from Salten, 67°, to the peninsula of Varanger, 70'/2° N, 
both near the coast and in the inner country. May be a 
large-flowered form of E. latifolia, but has been named 
E. suecica by different authors. 
As Norwegian species have further been quoted E. Rost- 
koviana Hayne, E. montana Jord., E. fennica Kihlm., E. hirtella 
Jord., E. nemorosa Pers., E. cerulea Tausch and E. bottnica 
Kihlm. All these are doubtful or are due to a wrong deter- 
