Oncidium trilobum [Schlechter] Garay & Stacy 1974 SECTION Stellata Photos courtesy of © Lourens Grobler

Another Flower Photo courtesy of Dario Melgar

Common Name The Three-Lobed Oncidium

Flower Size 2" [5 cm]

Found in Peru and Bolivia in wet montane forests at elevations of 250 to 1600 meters as a large sized, hot to cool growing epiphyte with a short rhizome carrying an ovoid, flattened, sulcate pseudobulb enveloped basally by distichous, foliaceous sheaths and carrying 2 apical, strap-shaped, green leaves that has a basal, arcuate, weakly paniculate, 3'4" [100 cm] to 10' [300 cm] inflorescence arising on an mature pseudobulb from the lateral leaf axils and occuring in the summer.

Very closely related to if not synomonous with Oncidium aurarium, I have left them separate for now. If they are the same orchid then Oncidum aurarium would take prescendence.

Synonyms *Odontoglossum trilobum Schlechter 1921

References W3 Tropicos, Kew Monocot list IPNI ; Die Orchideen der Sudamerikanischen Kordillerenstaaten IV Peru Schlechter 1921 as Odontoglossum trilobum; Icones Planetarum Tropicarum plate 562 Dodson 1982 as Odontoglossum trilobum drawing fide; Icones Planetarum Tropicarum Series II Orchids of Peru Plate 0147 Dodson & Bennett 1989 drawing fide; AOS Bulletin Vol 61 No 5/461 1992 photo; Oncidium Vol 1 Koniger as O aurarium; Orchid Species Culture: Oncidium, Bakers 2006; The Pictoral Encyclopedia of Oncidium Zelenko 2002

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