Oncidium luteum Rolfe 1893 SECTION Rostrata

Photo by Piotr Markiewicz and his Flickr Orchid Photo Website

Inflorescence

Photo by Daniel Jimenez

Part shade Warm to Cool Fall

Common Name The Egg-Yellow Oncidium

Flower Size 2/5" [1 cm]

Found in Costa Rica and Panama in windy cloudforests at elevations of 650 to 1700 meters as a mini-miniature sized, warm to cool growing epiphyte with small, laterally compressed pseuobulbs completely enveloped by several pairs of conduplicate, imbricating leaf-bearing sheaths and carrying a single, apical, leathery, narrowly to broadly elliptic, acute, dorsally keeled, narrowing below into a conduplicate base leaf that blooms in the fall on 1 or 2, erect, axillary, paniculate, many fractiflex branched, 18" [45 cm] long, many flowered inflorescence.

Synonyms Oncidium cheirophoroides Kraenzl. 1922; Oncidium pittieri Schltr. 1910

References W3 Tropicos, Kew Monocot list , IPNI ; The Epidendra Website; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922 as Oncidium cheirophoroides drawing fide; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922 as O pittieri; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922; Repert. Sp. Nov. Regni. Veg. Beih. 19: 151. Costa Rica Schlechter 1923 as O pittieri; Repert. Sp. Nov. Regni. Veg. Beih. 19: 261. Costa Rica Schlechter 1923 as O pittieri; Icones Planetarum Tropicarum plate 1572 Atwood 1993 drawing fide; Fieldiana Biology, Flora Costa Ricensis Family # 39 Orchidaceae, subtribes Maxillariinae and Oncidiinae Atwood & Mora 1999 drawing fide; Manual de Plantas de Costa Rica Vol 3 Hammel, Grayum, Herrera and Zamora 2003; Orquideologia Vol. 23 No 2 2004 as O luteum; Orchid Species Culture: Oncidium, Bakers 2006; Oncidium Vol 3 Koniger 2007 Photo/drawing fide; Orchids of Costa Rica Vol 2 Morales 2009 photo fide; Lankesteriana 12[3] 2014 photo/drawing fide; Lankesteriana 19(1). 31 - 55 2019 photo fide; Vanishing Beauty, Native Costa Rican Orchids Vol 2 Lacaena to Pteroglossa Pupulin 2020 photo fide

--------------------------------------------------------------------------------------------------------------------------

---------------------------------------------------------------------------------------------------------------------