It is amazing to see the diversity of thistles here. I saw
these in April, but earlier this year I saw many others.
I think the one on the right is Star thistle or Knapweed (Centaurea
hahyalolepis), and the one on the left is probably Holy milk-thistle
(Silybum maritimum). I'm not sure what the green one below is. Notice
the nice beetles on the milk thistle. If I could find an English insect
guidebook for this region, I could guess at what they are.