R. bulbosus s.l
If not mistaken, all specimens i checked end up to be R. bulbosus. This is identified from the rest by having a bulbous root, but it is against the green code of countryside (and against my will) to dig specimens. However, there are a combination of characteristics which will lead to to R. bulbosus without the need of checking the roots / base of plant.
For me, R. bulbosus keys out in being hirsute, sepals reflexed down, stocky, achenes with short beak, achenes with smooth edges and peduncles with a defined groove
Now, finally I found something different.
- Achenes with a developed beak and tuberculate sides (v.similar as muricatus)
Plant glabrous and as if polished
Peduncle striate to terate (in my opinion not grooved, but the striations introduce a doubt)
Leaves very large and dissected half way.
Upper cauline leaves starts as an entire and gradually becomes divided with maturity
I made my opinion on a gigantic R. muricatus - but R. muricatus usually have a different habit and smaller leaves.
what's your opinion?