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Aerangis collum-cygni
Aerangis collum-cygni Summerh. [Accepted]
Orchidaceae Epidendroideae Vandeae Aerangidinae
Aerangis collum-cygni Summerh.
Kew Bull., vol. 34 : p. 285, fig. 15 (1979-1980) [L.S. Cowan]