Helleborus dumetorum Waldst. & Kit. ex Willd. [ Helleborus atrorubens Waldst. & Kit.]
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Helleborus dumetorum Waldst. & Kit. ex Willd. [ Helleborus atrorubens Waldst. & Kit.] [Ranunculaceae]
J. Paxton, J. Lindley, Paxton’s Fl. Gard., vol. 2 : p. 55, fig. 162 (1853)