A spiny plant that has taken ages to i.d so I hope I have it right!
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On reflection, perhaps you do have the correct species here.
I cannot judge the height of the stems from the photograph.
Thanks Martin - always appreciate your comments. I must have missed your own posting 305098 which looks different from mine in respect of height, spinyness, and shape of flowerhead.
Having compared google pictures there seem to be far more that look like my photos under carduncellus than on caeruleus - of course they might not always be correct anyway!
If height is the critical factor I am sure my spot was more than 20cms?
Yes, I think you are right. The number of cauline leaves seems to be OK. Martin.
Lat/Lng: 44.5195, 5.7905