Greater knapweed -Centaurea scabiosa (flower yet to open)
Fondry des Chiens, June 2016.
https://observations.be/locations/179145/photos/?species=2425&date_after=1996-07-07&date_before=2021-10-27
"Centaurea scabiosa" or greater knapweed is a perennial plant of the genus "Centaurea". It is native to Europe and bears purple flower heads. This species is very valuable to bees. It is also a magnet for many species of butterfly. Among them is the marbled white.
Similar species: Asterales
Uploaded Dec 19, 2021. Captured Jun 9, 2016 13:30 in 3H94+PG Viroinval, Belgium.