Cephalanthera longifolia (L.) Fritsch [ Cephalanthera grandiflora Gray]
Cephalanthera longifolia (L.) Fritsch [ Serapias longifolia L.] [Orchidaceae]
F.W.L. Kraenzlin, W. Müller, Abbild. Grundform. Orchid.: t. 57 (1904) [W. Müller]