LAUSR

The genus Rhomboda Lindley (1857: 181), belonging to the family Orchidaceae (Orchidoideae: Cranichideae: Goodyerinae), was first described by John Lindley with a single species, viz. R. longifolia Lindley (1857: 181). Bentham (1881: 346) reduced Rhomboda to Hetaeria Blume (1825: 409), but Hooker (1890: 109) transferred it to Zeuxine Lindley (1826: 9). Tang & Wang (1951: 34) included R. longifolia in Odontochilus Blume (1858: 66), overlooking the priority of Rhomboda over Odontochilus. Finally, Ormerod (1995) reinstated Rhomboda and reviewed its generic affinities, circumscription and clarified some of the confusions about the genus. Rhomboda is characterised by a labellum with large, saccate hypochile having two glands within (one at either side), medially with a bicarinate, semidiscoid keel, hypochile outside with a narrow flange each side, the column with two large medial wings, and a short rostellum.