Oncidium obryzatum Rchb. f. 1854 SECTION Excavata

Photo by Jay Pfahl

to

Common Name The Shiney Golden Yellow Oncidium

Flower Size 1" [2.5 cm]

Found in Costa Rica, Panama, Colombia, Venezuela, Ecuador and Peru in shady locations in the wet cloud forest canopy at elevations of 400 to 1600 meters as a small to medium sized, hot to cool growing epiphyte with roundish, ovate or elliptic-oblong, laterally compressed, ancipitous, dark brown or black spotted pseudobulbs partially enveloped basally by several imbricate, leaf-bearing sheaths and carrying a single, apical, linear-lanceolate, acute, conduplicate below into the elongate, petiole-like base that blooms in the spring, summer and fall on an axillary, erect to arching, racemose to paniculate, 12 to 48" [30 to 122 cm] long, many flowered inflorescence arising on a mature pseudobulb and carrying sometimes fragrant flowers.

Often cited as a synonym of O klotscheanum but differs in the narrow sepals, longer petals and much longer middle section of the lip.

Synonyms Odontoglossum obryzatum (Rchb.f. & Warsz.) Dalström & W.E.Higgins 2016; Vitekorchis obryzata (Rchb. f.) Romowicz & Szlach. 2006

ReferencesW3 Tropicos, Kew Monocot list , IPNI ; *Bonplandia Rchb.f 1854; Atlas des Orchidees Cultivees Constantin 1920 drawing good; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922 as Oncidium floribundum; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922 as Oncidium microcachrys; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922 as Oncidium meliosmum drawing good; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922 drawing ok; Repert. Sp. Nov. Regni. Veg. Beih. 17: 83. Panama Schlechter 1922 as O fulgens; Repert. Sp. Nov. Regni. Veg. Beih. 19: 151. Costa Rica Schlechter 1923 as O varians; Beitrage Zur Orchideenkunde Von Colombia 27:112 Schlechter 1924 as O hoppii; The Orchids of Panama L.O. Williams & P Allen 1946; Venezuelan Orchids Illustrated Vol 1 Dunsterville & Garay 1959 drawing fide; Encyclopedia of Cultivated Orchids Hawkes 1965; AOS Bulletin Vol 36 #9 1967; Flora de Venezuela Volumen XV Part 5 Foldats 1970 drawing fide; Orquideologia Vol 14 No 1 1979 photo fide; Orchids of Venezuela, An Illustrated Field Guide Vol 2 Dunsterville & Garay 1979 drawing fide; Icones Planetarum Tropicarum plate 185 Dodson 1980 drawing ok; Orchids from The Coast Of Ecuador Arosemana, Jurado, Estrada and Konanz 1988 photo not = O klotzschianum ok; Native Colombian Orchids Vol 3 COS 1991 photo ok; Icones Planetarum Tropicarum plate 1470 Atwood 1992 drawing good; The Manual Of Cultivated Orchid Species Bechtel, Cribb & Launert 1992 drawring/photo fide; AOS Bulletin Vol 62 No 5 1993 photo good; Fieldiana Biology, Flora Costa Ricensis Family # 39 Orchidaceae, subtribes Maxillariinae and Oncidiinae Atwood & Mora 1997; Rudolf Schlechter Die Orchideen Band 1C lieferung 33 - 36 2057 - 2308 Brieger 1997 not = O klotzschianum; Orchids of Venezuela [An illustrated field guide] Vol. 2 Ramiro and Carnevali 2000 drawing fide; Icones Orchidacearum Peruviarum Plate 736 Bennett & Christenson 2001 drawing fide; Orquideologia Vol. 23 No 2 2004 as O hoppii; Orquideologia Vol. 23 No 2 2004 O meliosmum; Orquideologia Vol 23 #2 2004; Orchid Species Culture: Oncidium, Bakers 2006; The Pictoral Encyclopedia of Oncidium Zelenko 2002; Orquideas de la Serrania del Baudo Misas Urreta 2006 drawing/photo ok; Oncidium Vol 3 Koniger 2007 photo/drawing; AOS Bulletin Vol 77 No 12 2008 photo fide; Orquideas de Farallones de Cali Galindo-Tarazona, Haelterman, Zuluaga Trochez and Sebastian Moreno 2020 as O cf obryzatum photo ok; Vanishing Beauty, Native Costa Rican Orchids Vol 2 Lacaena to Pteroglossa Pupulin 2020 photo fide

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

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