Oncidium deltoideum Lindl. 1837 SECTION Rostrata

Photo by Alexander Hirtz

Another Angle

Inflorescence

Photos by Karl Senghas and The Swiss Orchid Foundation At The Jany Renz Herbaria Website

Part shade Cool Cold

Common Name The Delta-Like Oncidium [refers to the triangular lip]

Flower Size .6" [1.5 cm]

Found in Ecuador and Peru at elevations around 1800 to 2100 meters as a small sized, cool to cold growing epiphyte with ovate to elliptical, laterally compressed, ancipitous pseudobulbs enveloped basally by 2 pairs of foliaceous sheaths and carrying 2 to 3, apical, conduplicate, lanceolate, acute leaves that blooms on a 17 to 40" [42 to 100 cm] long, ascending to erect then nodding, paniculate, central stem fractiflex, 5 to 8 branched, rebranching, all in the apical 1/3, each branch 6 to 12 flowered, many flowered inflorescence.

Synonyms Cyrtochilum deltoideum (Lindl.) Kraenzl. 1917

References W3 Tropicos, Kew Monocot list , IPNI ; Die Orchideen Schlechter 1915; Das Pflanzenreich Odontoglossum/Oncidium Kranzlin 1917 as Cyrtochilum deltoideum drawing fide; AOS Bulletin Vol 27 No 5 1958 drawing fide; Encyclopedia of Cultivated Orchids Hawkes 1965; Rudolf Schlechter Die Orchideen Band 1C lieferung 33 - 36 2057 - 2308 Brieger 1997 photo fide; Native Ecuadorian Orchids Vol 4 Dodson 2003 photo fide; Orchids Vol 1 Koniger 2004 drawing/photo fide; Orchid Species Culture, Oncidium/Odontoglossum Alliance Baker's 2006 as Cyrtochilum deltoideum; Orchid Species of Peru Zelenko Bermudez 2009 photo

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