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

Phal. Sunset Gemstone 'Tahiti' $25.00 listed by Peter Podaras Boring, USA

B. perrinii $35.00 listed by Linda Hartman PORT ST LUCIE, USA Local Only

Dendrobium var. Love Memory 'Fizz' $30.00 listed by Eva Boczon Chicago, USA Local Only
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Orchid Species: Oncidium macranthum

Kew currently accepted name is Cyrtochilum macranthum

Oncidium macranthum is an orchid species identified by Lindl. in 1833. Culture information and photos for this orchid are commonly detailed under the currently accepted name of Cyrtochilum macranthum.
Genus
Oncidium (Onc.)
Grex
macranthum
(traditional Sander nomenclature)
Parents
Species
Author
Lindl.
Year
1833
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ORIGIN: From Colombia, Peru and Ecuador that is found in montane cloud forests at elevations up to 3000 meters.

DESCRIPTION: A cold growing, large sized, caespitose epiphyte with ovoid to conical, slightly compressed pseudobulbs enveloped basally by 3 to 4 imbricating sheaths and carrying 2 apical, linear-oblong to oblanceolate, acute leaves and blooms in the fall through spring on an axillary, stout, woody, to about 12' [360 cm] long overall, ascending to arcuate, long, paniculate, each 12 [30 cm] long branch 2 to 5 flowered, up to 70 flowered inflorescence arising on a just mature pseudobulb through the axil of the basal sheath carrying showy, long-lasting flowers.

FLOWER SIZE: To more than 4, largest in genus inches [to more than 10 cm] -- information provided by Jay Pfahl, author of the Internet Orchid Species Encyclopedia (IOSPE).
Other Names
Genus Name Genus Grex Name Year Author
Add+ Cyrtochilum Cyr macranthum 1917 (Lindl.) Kraenzl.
Add+ Cyrtochilum Cyr carrutherianum 1922 F.Lehm. & Kraenzl. in H.G.A.Engler (ed.)
Add+ Cyrtochilum Cyr hastiferum 1917 (Rchb.f. & Warsz.) Kraenzl.
Add+ Oncidium Onc hastiferum 1854 Rchb.f. & Warsz.
Most awarded/recent cultivars: Cyr. macranthum 'Jardin botanique de Montréal' (2018) Cyr. macranthum 'Monster' (2017) Cyr. macranthum 'Andrea Niessen' (2014) Cyr. macranthum 'Marsh Hollow Magic' (2014) Cyr. macranthum 'Marsh Hollow Jewel' (2014) Cyr. macranthum h.v. nanum 'Alfons' (2013) Cyr. macranthum 'Golden Sunrise' (2013) Cyr. macranthum 'Golden Sunset' (2013) Cyr. macranthum 'Rustic Sunrise' (2012) Cyr. macranthum 'BUSTER' (2012) Cyr. macranthum 'Rustic Perfection' (2012) Cyr. macranthum 'George Norris' (2011) Cyr. macranthum h.v. nanum 'Solar Place' (2006) Cyr. macranthum 'Pacifica' (2005) Cyr. macranthum 'Golden Globe' (2005) Onc. macranthum h.v. nanum 'Memoria Henry Ho Hur' (2004) Onc. macranthum 'Pacific Gold' (2004) Onc. macranthum h.v. nanum 'Full Moon' (2003) Onc. macranthum 'Rustic Seven' (2002) Onc. macranthum 'Rio Verde' (2002)
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