Oncidium cruciatum Rchb. f. 1878 SECTION Waluela
Photos by © Luis Felipe Varella
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Common Name The Cross-Shaped Oncidium
Flower Size 1" [2.5 cm]
Found in Bahia, Espirito Santo, Rio de Janiero, and Minas Gerais State of Brazil in shady, humid cool mountain locations at elevations of 400 to 1000 meters as a small sized, warm to cold growing epiphyte with clustered, terete pseeudobulbs partially enveloped basally by 2, acute leafless sheaths and carrying 1 or 2, apical leaves that blooms on a branched, 12" [30 cm] long, many [40] flowered inflorescence arising in the spring.
Often cited as a synonym of Oncidium fimbriatum Lindley non Hoffmansegg which is often erroneously sited as a synonym of Oncidium ciliatum.
Newer references give O gutfreundiana as a synonym of this species but as of now I have left them separate.
Synonyms Baptistonia cruciata (Rchb.f.) Chiron & V.P.Castro 2004; Gomesa cruciata (Rchb.f.) M.W.Chase & N.H.Williams 2009; Oncidium bicornutum Hooker 1831; Oncidium gamosepalum Königer 2010; Oncidium pubes var flavescens Hokr.f 1842
References W3 Tropicos, Kew Monocot list , IPNI ; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922 drawing ok; Orchidaceae Brasilenses Band 2 Pabst & Dungs 1977 drawing ok; Rudolf Schlechter Die Orchideen Band 1C lieferung 33 - 36 2057 - 2308 Brieger 1997; Oncidium Vol 2 Koniger 2005 photo/drawing fide; Orchid Species Culture: Oncidium, Bakers 2006 as Baptistonia cruciata; Icones Orchidacearum Brasilienses II Plate 106 Castro 2006 as Baptistonia cruciata drawing ok/photo fide; Oncidium Vol 2 Koniger 2005; The Pictoral Encyclopedia of Oncidium Zelenko 2002; Orchids of Brazil Vol 1 Oncidinae Baptista, Harding & Neto 2011 as Baptistonia cruciata photo fide
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