Cephalanthera longifolia (L.) Fritsch [ Cephalanthera grandiflora Gray]
      
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6 222356 Cephalanthera longifolia (L.) Fritsch [125 939972 Serapias longifolia L.] Orchidaceae
J.E. Smith, Engl. Bot., ed. 3, vol. 9 : t. 1485 (1869)