Oncidium barbaceniae Lindl. 1855 SECTION Synsepala

Plant Photos by © Amerigo Docha Neto and the Orchidstudium Webpage

What many people have as O montanum Drawing by © Pabst

What Pabst has a O barbaceniae Photo by © W W G Moir

Partial Shade CoolEARLYSpringEARLY Summer

Common Name or Meaning The Barbacena Oncidium [A town in Minas Gerais Brazil]

Flower Size .6" [1.5 cm]

Found in Minas Gerais , Espirito Santo, Rio de Janiero, Sao Paulo, Parana and Sabta Catarina states of Brazil among grasses in swampy areas at elevations around 800 to 1700 meters as a small sized, cool growing terrestrial with clustered, egg-shaped to oblong, slightly compresssed, longitudinally grooved with age, shiny, dark green pseudobulbs and carrying 1 to 3, apical, linear, acute, somewhat rigid, gradually narrowing below into the conduplicate base leaves that blooms in the late spring and early summer on an erect, basal, racemose , 16 to 28" [40 to 70 cm] long, few flowered inflorescence.

CAUTION I have 2 distinct types that come up as this species. Kew puts O montanum as a synonym of this species but O montanum photos most always show the species that I have as O montanum above. Pabst has O barbaceniae with different calli on the lip and does not match anything that I have and his O pirarense is what I have as O barbaceniae and his O orthostates is what I have as O pirarense. What a mess, I need better references. SO PLEASE USE ANY OF THESE DETERMINATIONS WITH CAUTION!!!!!

Synonyms Ampliglossum barbaceniae (Lindl.) Campacci 2006; Ampliglossum montanum (Barb.Rodr.) Campacci 2006; Coppensia barbaceniae (Lindl.) Campacci 2006; Coppensia montana (Barb.Rodr.) Campacci 2006; Gomesa barbaceniae (Lindl.) M.W.Chase & N.H.Williams 2009; Gomesa montana (Barb.Rodr.) M.W.Chase & N.H.Williams 2009; Oncidium uliginosum Barb.Rodr. 1877

References W3 Tropicos, Kew Monocot list , IPNI ; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922 as Oncidium uliginosum; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922 as Oncidium montanum; Orchidaceae Brasilenses Band 2 Pabst & Dungs 1977 drawing fide; AOS Bulletin Vol 47 No 6 1978 as O montanum photo; Orchid Digest Vol 44 No 4 1980 as O montanum drawing ok; Orchid Digest VOl 44 No 4 1980 as O uliginosum drawing ok; Orchid Species Culture Odontoglossum/Oncidium Alliance Bakers 2006; Orchid Species Culture Oncidium/Odontoglossum Alliance Bakers 2006 as O montanum; AOS Bulletin Vol 76 No 8 2007 as Coppensia barbaceniae; AOS Bulletin Vol 76 No 8 2007 as Coppensia montana photo fide; Orchids of Brazil Vol 1 Oncidinae Baptista, Harding & Neto 2011 as Coppensia barbaceniae photo fide

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