Centaurea aspera Rough Star-thistle C DDD I
We fairly easily found this on rough land next to the sea wall on Guernsey not far from the orchid fields but the really large numbers were on Jersey where it has been naturalised in the dunes since 1839. There is loads of it here and it is a very good looking plant. I've given this plant a high difficulty rating because you can only find readily it on the Channel Islands although it has in the past been recorded from a few coastal sites in south Wales, the Sefton coast and around London.