This one is a bit of a cheat.
Bog cotton - Caoin-cheann - Eriophorum angustifolium
The flowers of bog cotton are dull red-brown colour, and it is the resultant seed heads that are visually stunning. So, not a wildflower in the strict sense.
These are very common in peat bog areas, and we have plenty of those in the #Highlands. Photo was taken at the end of May.