Lungwort

"The spotted lungwort contains, among other things, silicic acid, mucilage, saponins, tannins and large amounts of minerals and thus has an anti-tussive and anti-inflammatory effect. The flowers contain a dye that belongs to the anthocyanins - it changes color from red (acidic) to blue (alkaline) with a change in acidity" (*Wikipedia)

I do not understand a word. But the blossoms are beautiful :-D