The Oncidiinae is a subtribe within the Orchidaceae that consists of a number of genera that are closely related. This subtribe consists of about 70 genera with over 1000 species, with Oncidium as its largest genus. These genera consist of a single floral type based on the angle of the attachment of the lip to the column, reflecting pollinator preferences. This has however led to several unreliable results and polyphyletic taxa within Oncidium. These were transferred to Gomesa and a new genus Nohawilliamsia, has been described for Oncidium orthostates Most species have well-developed pseudobulbs and conduplicate leaves. It is possible to form hybrids in some instances between multiple genera within the Oncidiinae. These hybrids are often colloquially referred to as "intergenerics." Genera Genera recognized in Chase et al.'s 2015 classification of Orchidaceae: Aspasia Brassia Caluera Capanemia Caucaea Centroglossa Chytroglossa Cischweinfia Comparettia Cuitlauzina Cypholoron Cyrtochiloides Cyrtochilum Dunstervillea Eloyella Erycina Fernandezia Gomesa Grandiphyllum Hintonella Hofmeisterella Ionopsis Leochilus Lockhartia Macradenia Macroclinium Miltonia Miltoniopsis Notylia Notyliopsis Oliveriana Oncidium Ornithocephalus Otoglossum Phymatidium Platyrhiza Plectrophora Polyotidium Psychopsiella (sometimes included in Psychopsis) Psychopsis Pterostemma Quekettia Rauhiella Rhynchostele Rodriguezia Rossioglossum Sanderella Saundersia Schunkea Seegeriella Solenidium Suarezia Sutrina Systeloglossum Telipogon Thysanoglossa Tolumnia Trichocentrum Trichoceros Trichopilia Trizeuxis Vitekorchis Warmingia Zelenkoa Zygostates In synonymy: Ada = Brassia Odontoglossum = Oncidium References Mark W. Chase - A Reappraisal of the Oncidioid Orchids ; Systematic Botany, Vol. 11, No. 3 (Jul. - Sep., 1986), pp. 477–491 External links Details of the Oncidium Alliance Article on the Oncidium Alliance Orchids Orchid subtribes Taxa named by George Bentham