Oncidium concolor plate
Oncidium concolor from
Lindenia Iconographie des Orchidées

Scientific Classification
Kingdom: Plantae
Division: Magnoliophyta
Class: Liliopsida
Order: Asparagales
Subfamily: Epidendroideae
Tribe: Cymbidieae
SubTribe: Oncidiinae
Genus: Oncidium
Sw. 1800
Type Species
Oncidium altissimum

Oncidium, abbreviated as Onc in horticultural trade, is a genus that contains about 330 species of orchids from the subfamily Epidendroideae of the orchid family (Orchidaceae).


Plants in this genus are distributed through out tropical and subtropical Americas, growing as epiphytes, although some are lithophytes or terrestrials.


The genus was first described by O. Swartz in 1800 in Kungliga Svenska Vetenskapakademiens Avhandlingar.

The flowers of the Oncidium genus come in shades of yellow, red, white and pink. The petals are often ruffled on the edges, as is the lip. The lip is enormous, partially blocking the small petals and sepals.


Grow in cool to warm conditions with moderate to bright light. Water the plant right before the potting mix starts to dry. Plants should be potted in a well drain medium such as medium fir bark.


Its name is derived from the Greek word "onkos", meaning "swelling". This refers to the callus at the lower lip.


  1. Chelyorchis Dressler & N.H. Williams 2000
  2. Coppensia Dum. 1835
  3. Cyrtochilos Spreng. 1826
  4. Lophiaris Raf. 1836[1838]
  5. Olgasis Raf. 1836[1837]
  6. Stilifolium Koniger & Pongr. 1997
  7. Trigonochilum Königer & Schildhauer 1994
  8. Xaritonia Raf. 1836[1838]
  9. Xielyanthum Raf. 1836

Species Edit

Natural HybridsEdit


This page uses Creative Commons Licensed content from Wikipedia (view authors). Smallwikipedialogo.png
  • Harry Zelenko :The Pictorial Encyclopaedia of Oncidium (1997)
  • Koniger, W. 2003. New species of the genera Masdevallia, Oncidium and Sigmatostalix. Arcula no. 12: 298-311.
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