Scurvy-Grass (Cochlearia officinalis) I think it is. It was really hard to find out. As you can see it also has a little visitor. Drawn to it sweetness. Please don’t bug me for the name of that bug. This little plant is eatable and was used to cure scurvy. It is even still sometimes used to make ale.
Scurvy was in the past a fear for all sailors. During long voyages the lack of vitamin C caused the teeth to come out and at worse death. In 1747 the Scottish marine doctor, James Lind, proved that scurvy could be treated with lemon juice.
If I was a sailor back in the day I’d prefer the ale. Hoist the Jolly Roger and ha de Gött!