Oncidium pergameneum Lindl. in G.Bentham 1842 SECTION Oblongata
Photo R Jimenez © and The Herbario AMO Website
Photos by © Karl Senghas and The Swiss Orchid Foundation at the Jany Renz Herbaria Website
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; AOS Bulletin Vol 48 #5 1979; Orquídea (Mexico City), n.s., 7[3]: 1979; ORQUIDEA (MEX.) 13(1-2). DICIEMBRE 1993 photofide; Rudolf Schlechter Die Orchideen Band 1C lieferung 33 - 36 2057 - 2308 Brieger 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; Orchid Genera and Species in Guatemala Archila, Szlachchetko, Chiron, Lipinska, Mystkowska and Bertolini 2018
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