Helleborus niger subsp. macranthus
Synonymy
Source: Raab-Straube, E. von, Hand, R., Hörandl, E. & Nardi, E. (2014+): Ranunculaceae. – In: Euro+Med Plantbase - the information resource for Euro-Mediterranean plant diversity.
Helleborus niger subsp. macranthus in Bot. Jahrb. Syst. 11: 105. 1889