Flowers, receptacle and involucre looks like Crepis / Sonchus, The leaves are somewhat stiff, have margins with spikes like in Cirsium. Pappus snow white, entire (not pennate).
150-170 cm high.
Region: The Carpathians.
@Antonio,
You are right. The three last pictures belong to Crepis biennis L. It seems to be a large specimen mixed up with a Cirsium sp. I have definitely determined the achenes as Crepis biennis. Thank to all for all your advice.
No doubts - there are two species from different genera on these pictures. I agree that plant from the first picture belongs to Cirsium sp. And I guess Mr. A. Croce is right, and your determination, Jacek, sounds correct.
Sorry, I do not recognize the first species of Asteraceae. As for Crepis biennis, which is very common species in Slovakia, I appreciate the good pictures and confirm the determination.
The second specimen with yellow florets is Crepis spp.
The specimen 1 -pictures are not clear. Show full plant picture and the closeup of flowers.
I have no more photos of the first plant. Anyway, thank you everyone for your help.
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