Description: Perennial of erect stem. The leaves are purple-blue, thorny-toothed and pinnate. The flowers are purple-blue and are collected in globular inflorescences, surrounded by thorny sheathing leaves.

Flowering time: June-October

Habitat: Dry and rocky surfaces

Interesting fact: The Latin name of the species comes from amethyst because it corresponds to the color of the plant. Highly decorative and often dried for decoration.