flora of mount etna volcano, blossom of pink centranthus ruber valerian or red valerian, popular garden plant with ornamental

etna valeriana rossa dell background beard beautiful black blossom blossoms centranthus centratus closeup color dark europe flora floral flower flowers garden green italy jupiter jupiters landscape lava mount mountain natural nature outdoor pink plant red ruber season sicily sky spring stratovolcano summer tourism travel valerian volcano