Cephalanthera longifolia (L.) Fritsch [ Cephalanthera ensifolia Rich.]
      
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6 222356 Cephalanthera longifolia (L.) Fritsch [125 939972 Serapias longifolia L.] Orchidaceae
A.G. Dietrich, Fl. Boruss., vol. 1 : t. 19 (1832) [A.G. Dietrich]