Those are superb Trond! Euphrasias are so pretty.
Update no. 1 on the acaulis - it's quite easy to mow over them without damage. I actually think they look slightly heathier in the grass already - a bit darker green. Maybe they are benefiting from some mycorhizae?
In the Swiss Alps I came across a delightful yellow flowered Euphrasia - but tiny flowered even for a Euphrasia. I'm afraid I have forgotten its name....