Caularthron / Diacrium

Caularthron bicornutum
Alliance: Barkeria
Genus: Caularthron
Raf. (1837)
From Wikipedia, the free encyclopedia

Caularthron Raf. (1837), abbreviated Cau.[2] in the horticultural trade, is a genus of orchids with 4 species.[3] They are epiphytic orchids with specialized hollow pseudobulbs that house ants. The genus is exclusively found in the tropical regions of southern Mexico, Central America, the West Indies, and northern South America.[1]


List of species

Species accepted as of May 2014:[1]



  1. Kew World Checklist of Selected Plant Families
  2. downloaded October 3, 2010
  3. Information retrieved from on October 3, 2010, after enering "Caularthron"
  4. page 251 of Leonardo P. Felix and Marcelo Guerra: "Variation in chromosome number and the basic number of subfamily Epidendroideae (Orchidaceae)" Botanical Journal of the Linnean Society 163(2010)234-278. The Linnean Society of London. downloaded October 2010 from




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