Oncidium polyadenium Lindl. 1855 SECTION Excavata

Photo courtesy of © Bill Temple

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Common Name The Many Glanded Oncidium

Flower Size 1" [2.5 cm]

Found in Ecuador and Peru at elevations of 1200 to 2300 meters as a large sized, warm to cool growing epiphyte with small pseduobulbs entirely enveloped by several pairs of imbricating, conduplicate leaf bearing sheaths and carrying oblong to elliptic-oblong, acute to subacuminate leaves that blooming on a stout, pyramidical paniculate, many flowered inflorescnece with each branch being 4" [10 cm] long, fractiflex and few flowered and all adorned with several short, close, remote sheaths and small triangular, acuminate, much shorter than the ovary floral bracts

Often refered to as a synonym of O excavatum, I follow Goaverts and Schweinfurth in keeping it separate.

Synonyms

References W3 Tropicos, Kew Monocot list , IPNI ; Orchids of Peru Vol 4 Schweinfurth 1961; Oncidium Vol 1 Koniger 2004 as O excavatum; Orchid Species Culture, Odontoglossum/Oncidium Alliance Bakers 2006 as O excavatum

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