Echinops ruthenicus

Echinops ruthenicus Besser = Echinops davuricus Fisch. ex DC.
Echinops ruthenicus M.Bieb. = Echinops ritro subsp. ruthenicus (M.Bieb.) Nyman
Echinops ruthenicus Rchb. = Echinops bannaticus Rochel ex Schrad.

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