Oncidium divaricatum Lindl. 1828 SECTION Crassifolia
Photo by © Amerigo Docha Net and the Orchidstudium website
Photo by © Kjell Nilsson
SOMETIMES
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Common Name The Spread Out Oncidium [refers to the wide spread inflorescence]
Flower Size 1" [2.5 cm]
Found in southern Brazil and northern Argentina on the moist slopes of the coastal mountains at elevations up to 700 meters as a small to medium sized, cold to cool growing epiphyte with suborbicular, strongly compressed, yellow green, discoid pseudobulbs carrying a single, apical, narrowly oblong to oblong-elliptic, coriaceous, suberect, obtuse leaf that blooms in the fall on a paniculate, 4' to 6'8" [120 to 200 cm] long, dull purple inflorescence with 6 to 15 branches, each branch 3 to 10 flowering and having narrowly ovate, very acute floral bracts and carrying scented or not flowers.
O divaricatum is very similar to and most likely is conspecific with O pulvinatum, O sphegiferum and O robustissimum. If so then O divaricatum takes precendence.
Synonyms Aurinocidium divaricatum ( Lindl. ) Romowicz & Szlach. 2006; Grandiphyllum divaricatum ( Lindl. ) Docha Neto 2006; Oncidium divaricatum var. cupreum Lindl. 1827
References W3 Tropicos, Kew Monocot list , IPNI ; Atlas des Orchidees Cultivees Constantin 1920 drawing ok; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922; Encyclopedia of Cultivated Orchids Hawkes 1965; Orchidaceae Brasilenses Band 2 Pabst & Dungs 1977 drawing fide; The Manual Of Cultivated Orchid Species Bechtel, Cribb & Launert 1992 photo fide; Rudolf Schlechter Die Orchideen Band 1C lieferung 33 - 36 2057 - 2308 Brieger 1997; The Pictoral Encyclopedia of Oncidium Zelenko 2002 drawing fide; Orchid Species Culture: Oncidium, Bakers 2006; Oncidium Vol 1 Koniger 2004; AOS Bulletin Vol 86 # 3 2017 as Grandiphyllum divaricatum drawing fide;
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