Cochlioda

Oncidium
Oncidium altissimum
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Monocots
Order:	Asparagales
Family:	Orchidaceae
Subfamily:	Epidendroideae
Tribe:	Cymbidieae
Subtribe:	Oncidiinae
Genus:	Oncidium Sw.
Type species
Oncidium altissimum (Jacq.) Sw., 1800
Synonyms
Chamaeleorchis Senghas & Lückel in F.R.R.Schlechter Cochlioda Lindl. Collare-stuartense Senghas & Bockemühl Heteranthocidium Szlach., Mytnik & Romowicz Matalbatzia Archila Mexicoa Garay Miltoniastrum (Rchb.f.) Lindl. Miltonioides Brieger & Lückel Odontoglossum Kunth in F.W.H.von Humboldt, A.J.A.Bonpland & C.S.Kunth Petalocentrum Schltr. Roezliella Schltr. Sigmatostalix Rchb.f. Solenidiopsis Senghas Symphyglossum Schltr. Xeilyathum Raf.

Oncidium, abbreviated as Onc. in the horticultural trade, is a genus that contains about 330 species of orchids from the subtribe Oncidiinae of the orchid family (Orchidaceae). As presently conceived (May 2014), it is distributed across much of South America, Central America, Mexico and the West Indies, with one species (O. ensatum) extending into Florida. Common names for plants in this genus include dancing-lady orchid and golden shower orchid.

In 2008, Oxfords Annals of Botany labeled the Oncidium alliance "grossly polyphyletic." The American Orchid Society labeled this genus a "dumping ground." After DNA testing and much debate, a consensus was announced (April 2013) resulting in major taxonomic changes to Oncidium, Gomesa, Odontoglossum, Miltonia, and others. Much of this debate and subsequent housekeeping was initiated by significant research for the scientific publication Genera Orchidacearum Volume 5. As a result, much of the information in this article is now deprecated, but still of great value. One significant change is the move of most Brazilian Oncidium with a fused lateral sepal to the genus Gomesa. The Royal Horticultural Society system, the World Checklist of Monocots database at http://apps.kew.org/wcsp/home.do and the American Orchid Society have already updated their databases to reflect most of these changes.

This genus was first described by Olof Swartz in 1800 with the orchid Oncidium altissimum, which has become the type species. Its name is derived from the Greek word ὀγκος, "onkos", meaning "swelling". This refers to the callus at the lower lip.

...
Wikipedia