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There are currently no photos of plants of Oncidium ampliatum-majus for sale by members of ORCHIDS.ORG. Below are other recent plants for sale:

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Orchid Species: Oncidium ampliatum-majus

Kew currently accepted name is Rossioglossum ampliatum

Oncidium ampliatum-majus is an orchid species identified by F.Buyss. in 1878. Culture information and photos for this orchid are commonly detailed under the currently accepted name of Rossioglossum ampliatum.
Genus
Oncidium (Onc.)
Grex
ampliatum-majus
Parents
Species
Author
F.Buyss.
Year
1878
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ORIGIN: Found in the hot lowland areas of Guatemala, Belize, Honduras, El Salvador, Nicaragua, Costa Rica, Panama, Colombia, Ecuador, Peru and Venezuela and Trinidad occurring in dry deciduous to semideciduous forests at elevations of sea-level to 1000 meters.

DESCRIPTION: 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.

FLOWER SIZE: 1 inch [2.5 cm] -- information provided by Jay Pfahl, author of the Internet Orchid Species Encyclopedia (IOSPE).
Other Names
Genus Name Genus Grex Name Year Author
Add+ Rossioglossum Ros ampliatum 2008 (Lindl.) M.W.Chase & N.H.Williams
Add+ Oncidium Onc ampliatum 1833 Lindl.
Add+ Chelyorchis Cly ampliata 2000 (Lindl.) Dressler & N.H.Williams in G.A.Romero & G.Carnevali
Add+ Oncidium Onc bernoullianum 1922 Kraenzl. in H.G.A.Engler (ed.)
Add+ Oncidium Onc gyrobulbon 1869 Rchb.f.
Most awarded/recent cultivars: Onc. ampliatum h.f. majus 'Yvonne' (2 awards in 2005) Onc. ampliatum var. majus 'Botanical Bliss' (2 awards in 2003) Onc. ampliatum var. majus 'Orchid Lady' (2 awards in 1998) Onc. ampliatum 'Strub' (2018) Ros. ampliatum 'Eunice's Sunshine' (2016) Ros. ampliatum 'Colleen' (2016) Ros. ampliatum 'Herrenhausen' (2013) Cly. ampliata 'Brikam' (2013) Cly. ampliata 'At Last' (2007) Cly. ampliata 'Javier Salcedo Moore' (2003) Onc. ampliatum 'Santa Barbara' (1999) Onc. ampliatum 'Margaret Chin' (1998) Onc. ampliatum 'Merienda Lane' (1998) Onc. ampliatum 'Walters' (1993) Onc. ampliatum 'Murner's Gold' (1993) Onc. ampliatum 'Dottie' (1993) Onc. ampliatum 'Ginger' (1992) Onc. ampliatum var. majus 'Bill Teel' (1986) Onc. ampliatum 'Peggy Richardson' (1981) Onc. ampliatum var. majus 'Yellow Ribbon' (1981)
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