Oncidium cogniauxianum Schltr. 1921 SECTION Barbata type
Photo by © Roberto Martins and his Flickr Orchid Photo Website
Photo by © Jay Pfahl
to 
Common Name Cogniaux's Oncidium [Belgian Botanist in Brazil 1841-1916]
Flower Size 1/2" [1.25 cm]
Found in Rio de Janiero, Sao Paulo and Parana states of Brazil at elevations of 100 to 1500 meters in montane forests often in treetops on moss and lichen covered branches in full sun to partial shade as a miniature sized, warm to cool growing epiphyte with small, broadly ovoid, laterally compressed pseudobulbs enveloped basally by several imbricating sheaths and carrying 1 or 2, apical, thin, erect, spreading, linear, acute, conduplicate below into the petiole-like base and blooms in the fall and spring on a basal, to 4" [10 cm] long, wavy, 7 flowered inflorescence arises on a recently matured pseudobulb with nodding to spreading flowers.
Synonyms Alatiglossum cogniauxianum ( Schltr. ) Baptista 2006; Gomesa cogniauxiana (Schltr.) M.W.Chase & N.H.Williams 2009; Gomesa gracillima M.W.Chase & N.H.Williams 2009; Neoruschia cogniauxiana (Schltr.) Cath. & V.P.Castro 2006; Oncidium alfredi Kranzl. 1922; Oncidium gracillimum Cogn. 1906; Oncidium hoehneanum Schltr. & Mansf. 1930? see Koniger 2004; Oncidium zikanianum Hoehne & Schltr. 1926
References W3 Tropicos, Kew Monocot list , IPNI ; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922 as Oncidium alfredi; Orchidaceae Brasilenses Band 2 Pabst & Dungs 1977 drawing fide; Orchids of the High Mountain Atlantic Rainforest in SE Brazil Warren & Miller 1994; Rudolf Schlechter Die Orchideen Band 1C lieferung 33 - 36 2057 - 2308 Brieger 1997 photo fide; Orchid Species Culture: Oncidium, Bakers 2006; Oncidium Vol 1 Koniger 2004 drawing/photo fide; AOS Bulletin Vol 76 #11 2007 as Neoruschia cogniauxiana photo fide; Orchids of Brazil Vol 1 Oncidinae Baptista, Harding & Neto 2011 as Alatiglossum cogniauxianum photo fide
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