Oncidium ampliatum Lindl. 1833 SECTION Oblongata
Photos by Jay Pfahl
to
Common Name The Broad Pseudobulb Oncidium
Flower Size 1" [2.5 cm]
Found in Guatemala, Belize, Honduras, El Salvador, Nicaragua, Costa Rica, Panama, Colombia, Ecuador, Peru and Venezuela and Trinidad occuring in dry hot lowland deciduous to semideciduous forests at elevations of sealevel to 1000 meters as a medium sized, hot to warm growing epiphyte with large, oval, ridged, compressed, dark green mottled purple-brown pseudobulbs subtended by caducous bracts with two apical, elliptic leaves that are apically rounded or obtuse that blooms in the fall through the spring with a raceme or panicle that has a basal, erect or arching, to 4' [120 cm] long, many to few flowered inflorescence arising as the new growth matures.
Synonyms Chelyorchis ampliata (Lindl.) Dressler & N.H. Williams 2000; Oncidium ampliatum var. majus Lindl. 1894; Oncidium ampliatum-majus F.Buyss. 1878;Oncidium bernoullianum Kraenzl. 1922; Oncidium gyrobulbon Rchb.f. 1869; Rossioglossum ampliatum [Lindl.]Chase & Wms. 2008
References W3 Tropicos, Kew Monocot list , IPNI ; Symbolae Antillanae Vol VI Orchidaceae Urban 1909; Die Orchideen Schlechter 1915; Atlas des Orchidees Cultivees Constantin 1920 drawing fide; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922 as Oncidium bernoullianum; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922 as Oncidium gyrobulbon; Repert. Sp. Nov. Regni. Veg. Beih. 17: 81. Panama Schlechter 1922; Repert. Sp. Nov. Regni. Veg. Beih. 19: 149. Costa Rica Schlechter 1923; Repert. Sp. Nov. Regni. Veg. Beih. 19: 256. Costa Rica Schlechter 1923; The Orchids of Panama L.O. Williams & P Allen 1946 drawing fide; AOS Bulletin Vol 27 #2 1958 drawing fide; AOS Bulletin Vol 27 No 3 1958 drawing; AOS Bulletin Vol 27 No 6 1958; Native Orchids of Trinidad Schultes 1960; Venezuelan Orchids Vol 2 Dunsterville & Garay 1961 drawing fide; AOS Bulletin Vol 31 #6 1962 photo fide; Encyclopedia of Cultivated Orchids Hawkes 1965; AOS Bulletin Vol 36 # 9 1967; AOS Bulletin Vol 37 No 1 1968 photo fide; Flora de Venezuela Volumen XV Part 5 Foldats 1970 drawing fide; Las Orquedias De El Salvador Vol 2 Hamer 1974 drawing/photo fide; Orquideologia Vol 13 No 3 1979; Orchids of Venezuela ; An Illustrated Field Guide Vol 2 Dunsterville & Garay 1979 drawing fide; Orchid Digest Vol 44 No 2 1980 photo fide; Las Orquedias de El Salvador Vol 3 Hamer 1981 drawing fide; Icones Planetarum Tropicarum plate 895 Dodson 1983 drawing fide; Orchids Travel By Air A Pictoral Safari Mulder, Mulder-Roelfsema and Schuiteman 1990 photo fide; Native Colombian Orchids Vol 3 COS 1991 photo fide; AOS Bulletin Vol 61 No 7 1992 as O ampliatum var majus photo fide; Icones Planetarum Tropicarum plate 1464 Atwood 1992 drawing fide; The Manual Of Cultivated Orchid Species Bechtel, Cribb & Launert 1992 photo fide; Venezuela; Paraiso de Orquideas Romero 1997 photo fide; Rudolf Schlechter Die Orchideen Band 1C lieferung 33 - 36 2057 - 2308 Brieger 1997 photo fide; Fieldiana Biology, Flora Costa Ricensis Family # 39 Orchidaceae, subtribes Maxillariinae and Oncidiinae Atwood & Mora 1999 drawing fide; Orchids of Venezuela [An illustrated field guide] Vol. 1 Ramiro and Carnevali 2000 as Chelyorchis ampliata drawing fide; Rudolf Schlechter Die Orchideen Band 1C lieferung 44-45 pg 2763 - 2898 Brieger 2001; AOS Bulletin Vol 71 # 8 2002 postage stamp fide; The Pictoral Encyclopedia of Oncidium Zelenko 2002; AOS Bulletin Vol 72 No 12 2003 drawing fide; Manual de Plantas de Costa Rica Vol 3 Hammel, Grayum, Herrera and Zamora 2003 drawing fide; Orquideas Nativas del Tachira' Cesar Fernandez 2003 as Chelyorchis ampliata photo fide; Flora of the Venezuelan Guayana Vol 7 Steyermark, Berry, Yatskievych and Holst 2003 as Chelyorchis ampliata drawing fide; Orquideologia Vol. 23 No 2 2004 photo fide; AOS Bulletin Vol 74 No 10 2005 photo fide; Orchid Species Culture: Oncidium, Bakers 2006; Oncidium Vol 2 Koniger 2005 drawing/photo fide; Vanishing Beauty, Native Costa Rican Orchids Vol 1 Pupulin 2005 as Chelyorchis ampliata phopto fide; AOS Bulletin Vol 77 No 12 2008 as Rossioglossum ampliatum; AOS Bulletin Vol 78 #4 2009 as Rossioglossum ampliataumphoto fide; Orchid Species of Peru Zelenko Bermudez 2009 photo fide; Orchids of Costa Rica Vol 1 Morales 2009 as Chelyorchis ampliata photo fide; Orchid Digest Vol 77 #4 2013 as Rossioglossum ampliatum photo fide; AOS Bulletin Vol 82 #9 2013 as Rossioglossum ampliatum photo fide; LANKESTERIANA 14(1): 135—364. Bogarín & Serracín etal 2014 collection sheet fide; Orchid Digest Vol 81 #2 2017 as Rossioglossum ampliatum photo fide; AOS Bulletin Vol 86 #3 2017 as Rossioglossum ampliatum photo fide; Orchid Genera and Species in Guatemala Archila, Szlachchetko, Chiron, Lipinska, Mystkowska and Bertolini 2018 as Chelyorchis ampliata photo fide
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