Xylobium undulatum (Ruiz & Pavon) Rolfe [ Maxillaria undulata Ruiz & Pavon]
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Xylobium undulatum (Ruiz & Pavon) Rolfe [ Maxillaria undulata Ruiz & Pavon] [Orchidaceae]
H. Ruiz, J. Pavón, Draw. Roy. Bot. Exped. Viceroy. Peru: t. 1241 [] (1777) [I. Galvez]