This is not one of my flower quizzes - I do not know the name of the flower below which I spotted growing wild in the pine forests of Croatia. It was not difficult to see as it grows very tall - it is sturdy and statuesque, the biggest being about 5 feet in height. The plant has a very thick strong stem at the base, rather like the stem on Brussel sprouts, which gradually tapers to the top.
We saw several of them growing under the trees, the only plant that they bore any resemblance to was the garden Delphinium.
On this photo it is possible to see how thick the stem is even towards the top of the plant.
At the top of the plant the stem becomes quite slender.
I have done this 'mock up' of a brussel sprout stem. Hopefully it will give some indication as to the size and robustness of the stem at its base which I neglected to photograph .