Cephalanthera longifolia (L.) Fritsch [ Epipactis pallens Sw.]
      
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6 222356 Cephalanthera longifolia (L.) Fritsch [125 939972 Serapias longifolia L.] Orchidaceae
G.C. Oeder, Fl. Dan., vol. 8 fasicle 24, : t. 1400 (1806-1810)