Centaurea cyanus Cornflower I
Once a common sight in corn fields, Centaurea cyanus is far less common and usually see as an occasional birdseed alien. More recently (2023) it has become a main comonent of wild flower seed mixes sown on city and country verges.
However this is the genuine article: a field of barley with cornflowers dotted all over it. It has been known at this site for years and in the distance you can see a high density of blue flowering plants (which I couldn't get near without treading all over the crop).
Good old Scotland!
When New Flora of the British Isles was first published in 1991 (Edition 1) Centaurea cyanus was thought to be native but by the third edition (2010), it was considered to be an Archeophyte i.e. introduced to the British Isles but before 1500 A.D.