Oncidium pergameneum Lindl. in G.Bentham 1842 SECTION Oblongata Photo by Challen Willemsen and his Twitter Website

Another Flower

Inflorescence Photos by Karl Senghas and The Swiss Orchid Foundation at the Jany Renz Herbaria Website

Part shade Cool Fall

Common Name The Parchment-Like Oncidium [refers to the texture of the leaves]

Flower Size .7 to 1" [1.8 to 2.5 cm]

Found in Mexico?, Guatemala and Costa Rica? in forests at elevations of 1700 to 2000 meters as a small sized, cool growing epiphyte with to 1.2" [3 cm] between each egg-shaped, laterally compressed, ancipitous pseduobulb enveloped partially below by several, distichous, overlapping, sheaths with the uppermost leaf-bearing sheaths and carrying 2, apical, erect spreading, thin, hard, stiff, broadly elliptic to elliptic-oblong, obtuse, narrowing below into the conduplicate base leaves that blooms in the fall on an axillary, racemose to paniculate, weak, straggly, to 39" [100 cm] long, laxly few to several flowered inflorescence arising on a recently matured pseudobulb and has ovate to lanceolate, acute, concave, thin, dry floral bracts.

Synonyms Oncidium tenue Lindl. 1848; Oncidium wentworthianum var. tenue (Lindl.) Ames & Correll 1943

References W3 Tropicos, Kew Monocot list , IPNI ; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922 as Oncidium tenue drawing ok; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922 drawing ok; Rudolf Schlechter Die Orchideen Lieferung 33-6 1997; Orchid Species Culture Oncidium/Odontoglossum Alliance Bakers 2006; Oncidium Vol 3 Koniger 2007 drawing/photo fide; Algunas Orquideas de Mexico Tomo 1 Suarez 2013 photo fide